VENTS

• Versatile
• High back pressure capability
• Reliable
• Rugged
• Meets U.S. Coast Guard requirements with Stainless Steel screen option

Description

The Shand & Jurs Model 94103 Static Pressure Vacuum Vent design incorporates more than 90 years of experience in the development of quality safety and conservation fittings. This model is specifically designed to operate at static pressures up to 150psi and at temperature ranges from minus 50° to plus 200° Fahrenheit. Provisions for high vacuum settings are provided.

Standard materials of construction are cast steel bodies with aluminum or stainless steel trim. The seat is cast aluminum or cast stainless steel to withstand high pressures. Standard nylon coated Buna-N diaphragm is cushion-seated for tighter sealing. Other materials are also available.

Model 94103 Static Pressure Vacuum Vent is available only in a 4-inch size with raised face flange to match ANSI 150 LB. The body is self-draining and a drip ring keeps condensates from the seating surface. A unique feature is a special screen holder, which includes a stainless steel 30-mesh screen. Other design features include a peripheral and stem-guided vacuum pallet, designed primarily for high pressures and higher vacuum settings.

• Less need for special materials in corrosive and extreme temperature
• Unique floating diaphragm construction assures tight seal
• Peripheral and stem guided vacuum pallet assures reliable operation
• Pallet contributes to high flow
• Heavy duty construction, yet compact enough for easy handling

Description

The Shand & Jurs Model 94110 Vacuum Vent is designed using more than 90 years of experience in the development of quality safety and conservation fittings. The function of this vent is to relieve vacuum conditions in liquid product storage tanks, and also withstand the pressure of the stored product when not operating under a vacuum.

Vacuum breathing requirements of some petroleum products may vary so much from pressure breathing, that it is sometimes desirable and more economical to have separate vents to perform these respective functions.

A minimum number of model options are required to cover the wide variety of fluids and temperatures encountered in the petroleum, chemical and general process industries. Many trims, body materials and settings are standard options for those few conditions where standard construction is unsuited.

Standard materials of construction include low copper aluminum, steel, stainless steel or cast iron body. Metal seats are provided to withstand high pressures to which the vent may be subjected.

The body is self-draining and drip rings keep condensates from the seating surfaces. The Teflon diaphragm of the pallet has high resistance to adhesion by ice and gum formation, thus preventing sticking to the seat ring.

• Side Mounted
• Wide selection of materials for most corrosive and temperature needs
• Unique floating diaphragm construction assures tight seal
• Peripheral and stem guided vacuum pallet assures reliable operation
• Pallet design contributes to high flow
• Heavy duty construction, yet compact enough for easy handling

Description

The Shand & Jurs Model 94115 Vacuum Vent has been designed utilizing over 90 years experience in the development of quality safety and conservation fittings. The function of this vent is to relieve vacuum conditions in liquid product storage tanks, and also withstand the pressure of the stored product when not operating under a vacuum.

Vacuum breathing requirements of some products may vary so much from pressure breathing, that it is sometimes desirable and more economical to have separate vents to perform these respective functions.

A minimum number of model options are required to cover the wide variety of fluids and temperatures encountered in the petroleum, chemical and general process industries. Many trims, body materials and settings are standard options for those few conditions where standard construction is unsuited.

Standard materials of construction include low copper aluminum, steel, stainless steel, cast iron or ductile iron body. Specially designed seats are provided to withstand high pressures to which the vent may be subjected and to provide maximum flow efficiency.

The body is self-draining and drip rings keep condensates from the seating surfaces. The Teflon diaphragm of the pallet has high resistance to adhesion by ice and gum formation, thus preventing sticking to the seat ring.

• High flow capacity at low differential pressure
• Snap Action requires no over pressure
• Vacuum settings as low as 0.4″ w.c.
• Static pressure to 1.5 psig (MAWP)
• Light weight / High strength design

Description

The Shand & Jurs model 94116 Snap Action Vacuum Breaker permits high capacity atmospheric air flow at low differential pressures to be drawn into the liquid storage tank or pressure vessel when the internal vacuum pressure exceeds the vent setting.

The vent uses a magnetic latch system to hold the seal closed tightly at vacuum levels lower than the setting and at positive pressures. The set point is achieved by the magnetic force of a permanent magnet that attracts a ferrous plate attached to the pallet.

When the tank vacuum pressure reaches the set point, it overcomes the magnetic force and allows the pallet to instantly swing open, providing for 100% opening at set pressure with no overpressure required.

This feature provides greater flow capacities than conventional weight loaded vents.

The 94116 is designed for operation at static pressures up to 1.5 PSIG. Vacuum settings are available from .4 to 1.5 inches water column. They are designed for replacement of a rupture disc or in situations where self reclosing, high vacuum capacity is required.

The design incorporates a body that is self-draining and uses a vertical hinged pallet. These features prevent collection of condensates on the seating surface, which can lead to improper functioning of the vacuum vent.

• Available with Expanda-Seal™ Option
• Reduced need for special materials in corrosive and extreme temperature
• Peripheral and stem guided pressure pallet assures smooth lift and closure
• Positive seal and minimal blow down
• Capacity certifi ed to API standards
• Reduced maintenance and installation costs
• Optional Insulation Jackets Available

Description

The Shand & Jurs Model 94130 Pressure Relief Vent is designed to provide pressure relief with high efficiency, maximum flow capacity and minimum leakage. The easily service able configuration and light weight construction reduces maintenance and installation costs. A variety of construction materials are available as part of the standard design which are ideally suited for highly corrosive and toxic product applications.

For dependable performance, Shand & Jurs Pressure Relief Vents utilize pressure pallets that are both peripherally and center stem guided. The standard diaphragm is “Air Cushion Seated” and constructed of Teflon for high resistance to adhesion of ice and gum formation. A range of sizes and configurations, such as closed vent hood and flame snuffers are available. Standard pressure setting is ½ oz. per square inch.

• Available with Expanda-Seal™ Option
• Available in sizes: 2″, 3″, 4″, 6″, 8″, 10″ & 12″
• Aluminum, cast iron, steel or stainless steel
• Pressure range between 1 and 15 PSI
• All-weather valve for all material or service

Description

The Shand & Jurs Model 94140 Spring Loaded Pressure Relief Vent reduces excessive venting of product in liquid storage tanks. Available for open or closed vent systems, this vent provides pressure relief by either venting vapor into the atmosphere or piping emissions in a closed loop system.

Available in 2″- 12″ sizes, this vent is all weather for all materials and services. Pressure ranges are from 1-15 psi for 2″-10″ sizes and 1-10 psi for 12″ sizes. Flange connections match ANSI 150 lb. raised face or flat face for cast iron, steel and stainless steel construction. Aluminum construction comes in ANSI 150 lb. flat face flange only. Open vent body and seat material is the same except for steel which has a SS overlay seat. Closed vent model can either have Aluminum or SS seat.

An Expanda-Seal is available on the pressure pallet to assure minimal leakage up to 95% of set pressure.

One of the most important features which should be noted in the Model 94140 design is the variety of construction materials available. A wide range of highly corrosive and toxic products common to the petroleum, petro-chemical and chemical industries, require that a pressure vent be able to withstand this environment and still function reliably. For few instances where our standard materials may not be suitable, optional materials are readily available.

Standard materials offered are aluminum, cast iron, cast steel and 316 stainless steel. Standard seats are aluminum and 316 stainless steel.

• Available with Expanda-Seal Option
• Low copper aluminum alloy minimizes special materials needs
• Guided pressure pallet assures smooth lift and closure
• Unique diaphragm construction assures positive seal and minimal blow down
• Easy inspection of internal components

Description

The Shand & Jurs Model 94040 Spring Loaded Conservation Vent is designed utilizing over 90 years of experience in producing high quality and dependable conservation valves and safety fittings. This valve meets the need of higher pressure settings required on storage tanks (ideally suited when blanketed with nitrogen or other inert gas), process vessels and piping common to the petroleum, chemical and petro-chemical industries.

Higher pressure settings are accommodated using a unique method of spring loading which ensures highly reliable operation and reduces excessive venting of product at a relatively low cost. Pressure settings range from 1 psi through 15 psi for sizes 2″ to 10″ and up to 10 psi for the 12″ size. Screw and flange type connections are offered for the 2″ and 3″ size and flange only for sizes 4″ to 12″. Vacuum protection is provided utilizing a weight loaded vertical lift pallet assembly that assures optimum air flow into tank.

The pallet to seat diaphragm is cushion seated Teflon for long service life and optimum reliability. This diaphragm helps to ensure a high resistance to any ice and gum formations, prevents the pallet from sticking to the seat. The carefully engineered body, seat and pallet offers a superior combination of tight sealing and high capacity at lower over-pressure.

One of the most important features which should be noted in the Model 94040 design is the variety of construction materials available. A wide range of highly corrosive and toxic products common to the petroleum, petro-chemical and chemical industries, require that a conservation valve be able to with stand this environment and still function reliably. For few instances where our standard materials may not be suitable, optional materials are readily available.

Standard materials offered are aluminum, cast iron, cast steel and 316 stainless steel. Standard seats are aluminum and 316 stainless steel.

• Designed for highly corrosive service
• Excellent alternative to coated metal construction
• Provides pressure and/or vacuum relief
• Normal tank breathing prevents excessive product losses
• Controls emissions of toxic and corrosive vapors to the atmosphere

Description

The Shand & Jurs PVC Conservation Vents are designed for highly corrosive service where toxic liquids are stored. They are an excellent alternative to coated metal construction, where frequent corrosion due to the presence of pinholes is a problem. PVC valves are intended to provide pressure and/or vacuum relief on atmospheric storage tanks requiring normal venting.

This valve functions in the same manner as standard metal construction pressure/vacuum valves, preventing excessive product evaporation losses due to normal tank breathing. Controlling emissions of toxic and corrosive vapors to the atmosphere is a beneficial consideration.

Available in various venting configurations: pressure only, pressure/ vacuum or vacuum only,with choice of end-of-line or pipeaway styles.

Diaphragms are cushion seated and are constructed of FEP Teflon for reliability and extended service life. Valve design utilizes both peripherally and stem guided pallets for dependable operation.

• Protects tank contents from foreign debris
• Quick and easy maintenance
• Available in sizes 2″ through 24″ (other sizes available upon request)
• 20″ and 24″ API 650 also available
• EN1092 and JIS flange connections available on request

Description

The Shand & Jurs Model 94241 Free Vents are designed for use on bulk liquid storage tanks containing non-volatile liquids. The free vent is also used on vent riser pipes.

The Model 94241 Free Vent provides protection against rain, dirt, birds, insects and other foreign matter from entering storage tanks, while allowing atmosphere and vapors to flow freely. Installation is quick and easy.

This free vent is available in 2″, 3″, 4″, 6″, 8″, 10″, 12″, 16″, 18″, 20″ and 24″ sizes. The base fits 150 lb. ANSI flat face flange. Materials of construction available in steel, aluminum and stainless steel.

• 16″, 20″, 24″ Sizes
• Acids & Caustic Services
• Fiberglass Construction
• API 650, ANSI 150 or EN1092 Flange Drilling
• Leakage Rate of < 1 SCFH at 90% of Set Point
• 470 Derakane standard, 411 Derakane and Furan available

Description

The Shand & Jurs FRP 94063 Series Manhole Cover is designed to provide emergency venting relief of low-pressure storage tanks and vessels. These covers also provide quick, easy access for tank inspection and maintenance. When the tank is exposed to abnormal internal pressure beyond the capability of the conservation vent, the manhole protects the tank against costly rupture.

The Shand & Jurs FRP 94063 Series Manhole Cover provides an effective vapor-tight seal until pressure relief is required to protect the tank. Under emergency flame conditions, the cover opens fully to allow escape of vapors and prevents damage to the tank.

• Construction
• Standard
• Custom
• Flange, Seat, and Pallets of Derakane 470 Vinyl Ester Resin. 316 SS Studs and Teflon Air Cushioned Pallet Seating.
• Other resins and hardware are available to meet exact corrosion requirements including 411 Derakane, Furan, and Hastelloy.

Fast Inspection, Easy Maintenance

Unit’s rugged and lightweight design provides for easy, convenient handling for installation, inspection and maintenance. The pressure cover is normally restrained to allow automatic reseating. Disconnection of the retaining cord allows the pressure vent cover to be completely removed, thereby allowing access into the tank through the full diameter seat opening. Facilitates tank inspection and repair procedures.

Maintains Accurate Pressure Setting

Factory tested prior to shipment to meet Shand & Jurs high standards. Standard pressure setting of ¾ oz/in² on all models. Higher settings are also available.

• 20″ & 24″ Sizes
• Acids & Caustic Services
• Fiberglass Construction (FRP)
• API 650, ANSI 150 or EN1092 Flange Drilling
• Leakage Rate of ≤ 1 SCFH at 90% of Set Point

Description

The Shand & Jurs 94065 FRP Series Manhole Cover is designed to provide emergency venting and vacuum relief of low-pressure storage tanks and vessels. These covers also provide quick, easy access for tank inspection and maintenance. When the tank is exposed to abnormal internal pressure or vacuum beyond the capability of the conservation vent, the manhole protects the tank against costly rupture.

The Shand & Jurs 94065 FRP Series Manhole Cover provides an effective vapor-tight seal until pressure or vacuum relief is required to protect the tank. Under emergency flame conditions, the cover opens fully to allow escape of vapors and prevents damage to the tank. Under vacuum conditions, the spring-loaded vacuum vent will open to relieve excessive negative pressure.

Construction

Standard: Flange, Seat, and Pallets of Derakane 470 Vinyl Ester Resin. 316 Stainless Steel Trim (Hastelloy optional) and Tefl on® Air Cushioned Pallet Seating.

Custom:

Other resins, soft goods, trim and hardware materials are available to meet exact corrosion requirements including 411 Derakane and Furan Hastelloy.

Fast Inspection, Easy Maintenance

Unit’s rugged and lightweight design provides for easy, convenient handling for installation, inspection and maintenance. The pressure cover is normally restrained to allow automatic reseating and to protect the vacuum vent mechanism. Disconnection of the retaining cords allows the pressure vent cover to be completely removed, thereby allowing access into the tank through the full diameter seat opening. Facilitates tank inspection and repair procedures.

Maintains Accurate Pressure/Vacuum Settings

Factory tested prior to shipment to meet Shand & Jurs high standards. Standard pressure setting of ¾ oz/in² on all models. Standard vacuum relief setting is ½ oz/in². Higher settings are also available.

• Available with Expanda-Seal™ Option
• Easy installation, convenient handling
• 20″ and 24″ opening – 20″ and 24″ flanges
• API 650 or 150 lb ANSI compatibility
• EN1092 sizes available

Description

The Shand & Jurs Model 94201 Emergency Vent and Manhole Cover with Expanda-Seal™ is an economical solution to present day emergency venting requirements. It is designed to relieve excessive internal pressure in liquid storage tanks while providing excellent protection against costly tank roof rupture repair. The Expanda-Seal™ design also decreases product leakage below actual set point. The standard design is available in 20″ & 24″ flange.

The Model 94201 is available with low base for liquid overflow. When specified, elongated guides and special stops can be provided to limit pallet lift. The pallet guide is deep enough to assure proper reseating of pallet after pressure relief at lower overpressures. Pallet will reseat when tank pressure drops below set pressure.

For tank venting or examination, the pallet may be removed from its base offering a clear unobstructed passage. A retaining cable is provided to attach the pallet to the base.

• Available with Expanda-Seal™ Option
• Easy installation and handling for inspection
• Tank examination requires no gasket replacement or unbolting
• 10″, 16″, 20″, 24″, 30″ and 36″ base designed to fit 150 lb. ANSI flange
• 20″ & 24″ sizes also designed to fit API 650 flange
• EN1092 sizes available

Description

The Shand & Jurs Model 94210 Emergency Vent and Manhole Cover is an economical solution to emergency venting requirements where intermediate pressure settings are required.

The design of Model 94210 employs a flexible diaphragm affording a tight seal between the pallet and the corrosion resistant seat below set pressure. This also assures low leakage. The diaphragm is intended for normal ambient temperature storage. Special diaphragms for tanks storing products other than oils and gasoline are available.

When set pressure is achieved, the pallet starts to lift. Flow efficiency rises rapidly to approximately 60% of a perfect orifice at 40% excess of the set pressure. At higher overpressure the flow efficiency approximates 75%.

For tank venting or examination, the entire hinged cover may be lifted open in a matter of seconds, offering clear passage through the unobstructed opening. Since no gasket replacement or unbolting is necessary, this vent eliminates the expensive manpower needed to put conventional emergency vents back in operation.

Pallet construction permits a wide variety of pressure settings. See specifications for various pressure settings of all vent sizes.

Standard design is available in 10″, 16″, 18″, 20″, 24″, 30″ and 36″ sizes. The Standard Mounting Flange is 150lb. ANSI Flat Face. The body has three lifting ears that are used to raise and position the unit. This helps to protect the internal diaphragm during installation. Lifting ears are not avialable on 10″ and 16″ sizes. The 20″ and 24″ vents can be provided with flat face flanges to fit API 650 Roof Manholes. Special construction types are also available.ios de techo API 650. Construcción especial tipos también están disponibles.

• Available with Expanda-Seal Option
• Design incorporates pressure and vacuum relief
• 20″ and 24″ roof manhole
• Reduced maintenance costs
• No unbolting of vent for gasket replacement or tank examination

Description

The Shand & Jurs Model 94221 Emergency Vent and Manhole Cover provides emergency relief of excessive internal pressure and vacuum beyond that provided by tank conservation vent requirements.

This weight loaded vent utilizes Expanda-Seal™ diaphragms which provide tight seals between pallets and seats. Special diaphragm materials are available for vents subjected to severe low temperatures or used on tanks storing heated stock. Corrosion resistant pressure/vacuum seat is standard.

Model 94221 is available in 20″ and 24″ size to fit a standard API or ANSI flange. Special Flanges are available including DIN.

The pallet starts to lift when set pressure is approached. Flow efficiency rises rapidly to approximately 60% of a perfect orifice at 40% excess of the set pressure.

At a higher overpressure, the pallet completely clears the manhole and the efficiency approximates 75%. For a standard setting the capacity at 1.4 oz./sq. in.(40% overpressure) is approximately 500,000 SCFH for the 20″ size.

Pallet construction permits settings from 1.0 oz./sq. in. for aluminum pallet & 1.3 oz./sq. in. for S.S. pallet standard to 8 oz./sq. in. maximum pressure. Vacuum settings are from 1.1 oz./sq. in. standard to 4.0 oz./sq. in. maximum. If specifying other than standard vacuum setting, it must be recognized that increased vacuum setting automatically increases the set point of pressure relief.

• Available with Expanda-Seal Option
• Design incorporates pressure and adjustable vacuum relief
• 16″, 18″, 20″ and 24″ API sizes
• 20″ and 24″ ANSI roof manhole sizes
• Hinged cover provide precise sealing and safety
• No unbolting of vent for seal replacement or tank examination

Description

The Shand & Jurs Model 94225 Emergency Vent and Manhole Cover provides emergency relief of excessive internal pressure and vacuum beyond that provided by tank conservation vent requirements.

The weight loaded pressure vent section employs a flexible diaphragm or an Expanda-Seal diaphragm (option), which provides a tight seal between the pallet and seat. Special diaphragm materials are available for most product environments. Corrosion resistant pressure/vacuum seat is standard.

The pressure pallet starts to lift when set pressure is approached. Flow efficiency rises rapidly to approximately 60% of a perfect orifice at 40% excess of the set pressure. At higher overpressure, the flow efficiency approximates 75%.

Vacuum relief is spring operated and adjustable, which permits a wide range of vacuum settings without affecting the pressure set point.

For tank venting or examination, the entire hinged cover may be lifted open in a matter of seconds, offering clear passage through the unobstructed opening. Since no gasket replacement or unbolting is necessary, this vent eliminates the expensive manpower needed to put conventional manhole covers back in operation.

Model 94225 is available for standard ANSI and API flange connections. Special Flanges are available including EN1092.
Pallet construction permits a wide variety of pressure settings. See specifications for various pressure settings of all vent sizes.

• vailable with Expanda-Seal™ Option
• Available in 4″, 6″, 8″ & 10″ sizes
• Inexpensive weights for standard settings
• Lightweight; saves shipping and installation costs
• TEFLON expanding seal provides practically zero leakage up to release pressure
• Magnetic latch assures instantaneous opening at release pressure
• Meets requirements of most small or large tanks

Description

The Shand & Jurs Model 94510 Magnavent is a pressure operated emergency vent designed specifically to meet the NFPA ruling on venting requirements for small storage tanks. An economically designed and priced unit, the principle of operation is based on a unique magnetic latch.

The pressure setting is accomplished by an Alnico permanent magnet attached to the base acting on a magnetic stainless steel plate on the hinged cover. As the pressure increases, the force required to overcome the magnetic attraction between the base and cover increases until the set pressure is reached. The setting is determined by the size and strength of the magnet.

Because the force required to overcome the magnet is much greater than the force (or pressure) required to support the lightweight cover, the vent instantaneously goes to full open at the release pressure – there is no “simmering” or leakage as the tank pressure approaches set pressure.

The time – and service – proved Alnico magnet, which is cadmium plated has been extensively tested with no deterioration in magnetic strength due to shock, time or temperature.

Another innovation incorporated in the Magnavent is the Teflon Expanding Seal. The seal never contacts two hard surfaces at one point. The tank pressure forces the seal away from the cover and at the same time forces it against the seat surface of the base with the result that the higher the tank pressure, the tighter the seal becomes.

Tests have shown that there is less than 0.5 cubic foot per hour leakage at high pressure right up to the release pressure. The Teflon Expanding Seal is an added benefit to those users who are concerned about conserving product. The performance of the Expanda-Seal™ technology makes the 94510 an economical alternative to expensive pilot operated valves or rupture disks where blowdown is not a major concern.

• Available with Expanda-Seal™ Option
• Magnetic latching eliminates expensive loading weights
• Instantaneous opening at set pressure, no overpressure required
• Unique diaphragm construction assures tight seal between pallet and seat
• Seat opening provides for clear passage when used as a manhole

Description

The Shand & Jurs Model 94520 Emergency Vent provides emergency venting and manhole requirements, where intermediate pressure relief beyond that provided by tank conservation vents is required. This vent is not intended to meet requirements of explosion relief, but is designed to relieve excessive internal pressure. It is a economical solution to costly and dangerous tank roof rupture problems.

The Model 94520 is available in 10″, 16″ and 20″ sizes and is designed to utilize a patented, magnetic latch system, which provides greater flow capacities than conventional weight loaded vents. It also provides for 100% opening at set pressure with no over pressure required. The magnetic latching principle eliminates hundred of pounds of loading weights required by conventionally loaded vents. The vent is tightly latched utilizing permanent magnets, which are mounted to the vent cover and act on a magnetic stainless steel plate on the vent base. As the pressure increases, the magnetic attraction between the base and cover remains constant, until the set pressure is reached. The setting is determined by the size and strength of the magnets.

Since the force required to overcome the magnets is much greater than the force (or pressure) required to support the lightweight cover, the vent immediately goes to full open at the set pressure. There is no “simmering” or leakage as the tank pressure approaches set pressure.

The vent cover is prevented from opening more than 90° via spring loaded cables. These cables are attached to the cover and the vent body. This will assure the cover to self close once fully opened.