L&J Technologies Misceláneo
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To reduce emissions, Shand & Jurs designed and patented a high performance valve sealing technology called Expanda-Seal™, which offers reduced tank emissions and odors for every process environment imaginable. This innovative design actually uses the internal vessel pressure to create a tighter seal the closer the pressure gets to the set point. Expanda-Seal™ ensures less than 0.5 SCFH air at 95% of the set point; the end result is a nearly bubble-tight seal.
Features and Benefits
- Significantly Reduces Emissions and Odors Patented Unique Design
- Less Than .5 SCFH @ 95% of Set Point
- Best Available Control
- Technology for Low Pressure
- Retains Valuable Product
94020 Conservation Vent (Pressure/Vacuum)
94040 Spring Loaded Conservation Vent (Pressure/Vacuum)
94130 Pressure Relief Vent (Open or Closed Vent Option)
94140 Spring Loaded Pressure Relief Vent (Spring Closed)
94160 Pressure Relief Vent
94201 Emergency Vent and Manhole Cover (with Expanda-Seal™)
94210 Emergency Vent & Manhole Cover (Hinged)
94221 Emergency Vent & Manhole Cover (Pressure & Vacuum)
94225 Emergency Vent & Manhole Cover (Pressure & Vacuum)
94470 Combination Conservation Vent and Deflagration Flame Arrester
94510 Emergency Vent
94520 Emergency Pressure Vent & Manhole Cover
94560 Flame Arrester & Conservation Vent (2″-4″ Sizes)
94570 Flame Arrester & Conservation Vent (2″-12″ Sizes)
94580 Flame Arrester & Emergency Vent
94630 Pilot Operated Relief Valve (Magnetic Pilot) - Gauge Hatches
95004 - 3 inch model only, Designed for screw mounting to a threaded tank nozzle. Spark-proof.
Foot opening cover; provides for pad locking cover to gauge body.
Special cover design prevents tampering when cover is in locked position
95010 - 6" & 8" sizes. This gauge provides for emergency venting up to 1 oz./sq. in.
Metal-to-metal seat
Foot pedal for easy opening
Tape gauge marker
All sizes are drilled to match ANSI 150 lb. flange.
95011 - 6" & 8" sizes With provision for emergency venting up to 1 oz./sq. in.
Pedal para una fácil apertura
Asiento de metal a metal
Cubierta de cierre automático
Marcador de cinta y ojo para suspender el termómetro o una muestra
Para el montaje, la unidad se puede atornillar a la boquilla del tanque
95014 - 4", 6" & 8" sizes Spark-proof, self-closing and designed for screw mounting to a threaded tank nozzle. This gauge provides for emergency venting up to 3-½ oz./sq. in. of pressure.
Este medidor proporciona ventilación de emergencia de hasta 3-½ oz./sq. en. de presión.
Sello flexible
Revestimiento de acero inoxidable en el asiento Marcador de cinta
S-gancho para suspender un termómetro o una muestra
- 94261 Vapor Recovery Regulator
- Operates within 1/10″w.c. from operating ranges of 1/10″ w.c. to 2″ w.c.
- Reduced number of moving parts maximizes service life
- No external power source required
Can provide four types of service:
- Pressure increase
- Vacuum increase
- Pressure decrease
- Vacuum decrease
Description
The Shand & Jurs Model 94261 Vapor Recovery Regulator is a float-operated pressure regulator utilizing a weight balanced float to establish a set point. This highly accurate and extremely sensitive regulator is used to maintain close pressure control of low pressure tanks and meets requirements for vapor recovery.
The primary purpose of this vent is to conserve vapor loss before atmospheric venting or to provide a closed venting system. It has the capacity of providing simple adjustment of set points by adding or removing weights.
Model 94261 is a totally self-actuated regulator requiring no outside source of energy for its operation. A straight forward mechanical design using a minimum of moving parts provides for long service life with minimum maintenance.
94270 Vapor Guard Tank Blanketing Valve
- Lower maintenance due to fewer parts
- Compact / Light Weight Design occupies less space with less stress to tank
- Eliminates the effects of valve leakage and waste of blanketing gas
- One valve system
- Horizontal or Vertical Mounting
- Set Pressure is the only Adjustment
- 316 SS Trim and Seats Standard
Description
What is Tank Blanketing?
Gas blanketing systems are used to prevent the escape of liquid vapors into the atmosphere or to prevent moisture from entering a tank and contaminating its contents. A tank blanketing valve maintains an inert gas blanket (usually nitrogen or carbon-dioxide) in the vapor space of a pressure-tight liquid storage vessel. This process is accomplished by utilizing a steady high-pressure gas source and the Shand & Jurs Model 94270 “VAPOR GUARD” so that flow is limited to a constant value when the main valve is opened below the set point.
The valve limits the minimum pressure of the gas blanketing to cope with outdoor temperature reductions or pump outs without inbreathing air. When pressure inside the vessel exceeds the valves set point the main valve shuts off. If pressure increases due to outdoor thermal heating, or product pump-ins, the separate conservation vents opens and relieves the excess pressure. One advantage of using the Shand & Jurs “VAPOR-GUARD” is that only one valve is needed to maintain precise blanketing regulation while conventional recovery systems require several regulators to achieve the same results.
How Does it Work?
The Shand & Jurs 94270’s compact design allows the valve to be mounted directly on the tank which in turn not only reduces the number of necessary connections, but also possible leak points. Models are available with female thread connections & threaded-on flanges. The 94270 has a balanced, piston operated, main valve so that the set point pressure is virtually unchanged at any given inlet pressure within the specified operating range. The “VAPOR GUARD” has a modulating type action valve that opens and closes automatically, maintaining a closely controlled blanket pressure and gas flow.
The modulating action simplifies the valve design thus increasing reliability and reducing maintenance costs. The “VAPOR GUARD” operates in the closed position whenever the tank pressure is satisfied or exceeds the set pressure. Whenever the sensed pressure decreases, the set pressure spring and diaphragm assembly causes a downward force such that the main valve will open proportionately to control pressure and limited capacity.
94320 Dehydrator
- Absorbs moisture drawn into storage tank during unloading or by “thermal breathing”
- Desiccant can be reactivated thousands of times without appreciable loss in efficiency
- Humidity indicator informs when desiccant bed should be changed
- Available in 2″ to 12″, EN1092 sizes available
- EN1092 / JIS Flange Connections Available
Description
The Shand & Jurs Model 94320 Dehydrator absorbs moisture from the air that is drawn into a storage tank during the unloading of product or by “thermal breathing” conditions.
Desiccant of high absorptive capacity is used as the drying agent. The hard ball shaped form of the desiccant minimizes the pressure drop, permitting more efficiency. This is a function of material surface area and retention time. The nature of the desiccant does not change the flow of gas up to the point of maximum saturation since the moisture is absorbed within the pores of the material. The desiccant is contained in a bank that can be easily removed for cleaning or maintenance.
The humidity indicator is a good barometer to monitor when the desiccant bed is saturated. To reactivate a saturated desiccant bed, heat the bed to 400°F until all moisture is vaporized. The desiccant can be subjected to thousands of absorption-reactivation cycles without any appreciable loss of efficiency.
94321 Air Dryer
- Protects damage to moisture sensitive products
- Absorbs moisture drawn into storage tank during unloading or by “thermal breathing”
- Desiccant can be reactivated thousands of times without appreciable loss in efficiency
- Humidity indicator informs when desiccant bed should be changed
- Available in 2″ or 3″ NPT or flanged connections
Description
The Shand & Jurs Model 94321 Air Dryer absorbs moisture from the air that is drawn into a storage tank during the unloading of product or by “thermal breathing” conditions. Desiccant of high absorptive capacity is used as the drying agent. The hard ball shaped form of the desiccant minimizes the pressure drop, permitting more efficiency. This is a function of material surface area and retention time. The nature of the desiccant does not change the flow of gas up to the point of maximum saturation since the moisture is absorbed within the pores of the material. The desiccant is contained in a perforated stainless steel basket that can be easily removed for cleaning or maintenance.
Model 94321 Air Dryer is 40 inches high and both the cover and basket can be removed through the use of 3/8″ bolts. The desiccant basket holds 50 pounds on the 2″ size and 200 pounds on the 3″ size; this is the recommended amount required to properly operate the air dryer. The air dryer is available in 2″ or 3″ NPT or flanged to match 150Ib. ANSI connections. Nominal flow for 1″ W.C. pressure drop is 840 SCFH for the 2″ size and 3500 SCFH for the 3″ size.
The humidity indicator is a good barometer to monitor when the desiccant bed is saturated. To reactivate a saturated desiccant bed, heat the bed to 400°F until all moisture is vaporized. The desiccant can be subjected to thousands of absorption-reactivation cycles without any appreciable loss of efficiency.
- 95661 Swing Joints
- Cost effective
- Teflon thrust washer & spring retainer provide smooth swing action
- Telescoping pipe nipples support legs for easy installation
Description
The Shand & Jurs Model 95661 Swing Joints permit the movement necessary in lowering the swing pipe in a swing line system. These joints are of the double elbow type, with a tongue and groove joint which retain a Teflon anti-friction thrust type washer between the swivel flanges to promote long, tight service. The two elbows are held together by a spring loaded tie rod that also has a Teflon thrust washer, plus a spring retainer for smooth action. Spring or nut-turn settings are factory set, per spring length dimension shown on table for optimum performance.
The Swing Joint is supported by two telescoping pipes which are spaced at 70° to each other. Providing support for the swivel elbow only, the stationary elbow requires no support. To avoid excessive strain on supports due to occasional shifting of foundation, it is recommended to fasten supports to the tank shell and not the tank bottom.
Telescoping pipe nipples are used as support legs for easy installation. This simplified method of installation eliminates the necessity for shimming due to varying shell plate thicknesses.
The 3″ size swing joint is available with screwed or flange connection without supports. The elbows are ductile iron metal to withstand impacts or fracturing from wrenching stresses.
95600, 95601 and 95602, Cable Winches for Swing Line
- Highest quality materials available
- Model 95602 – 2500 Ib. lift capacity
- Model 95600 & 95601 – 500 Ib. & 1500 lb. capacities each
- The most reliable cable winch available
- Worm gear technology
Description
The Shand & Jurs Cable Winches incorporate the finest design and highest quality materials available. This winch is used in raising and lowering swing lines in storage tanks and is of the worm gear type which is highly superior to the conventional spur gear winch that requires a pawl to prevent the winch from running down. The breaking of a pawl holds the possibility of the swing line damaging the bottom of the storage tank, and the spinning handle injuring the operator.
Gears in the Shand & Jurs Winch are accurately machined with the result that the winch is smooth in operation and there is no back lash. The handle has a loose hand grip which revolves with the hand when the winch is operated. When the handle is released it remains in that position and the weight of the swing line will not move it. The winch is mounted on steel supports which can be riveted or welded to the tank shell. In the event of damage to the winch, it can be removed from the supports without the necessity of detaching the supports from the tank. The gear ratio of these winches is calculated to require the least amount of pull on the crank to raise or lower the swing lines to which they are applied.
The Shand & Jurs Winch is suitable for a variety of applications including raising and lowering swing lines in storage tanks, oil baths and other applications. Construction material is case steel fabrication. The Model 95600 Winch is made in two sizes: the No. 1 Heavy duty, 1500 Ibs. capacity and No. 3 Light duty, 500 Ibs. capacity. Model 95601 is identical to Model 95600 but has an indicator. Model 95602 has a standard lift capacity of 2500 pounds.
Shand & Jurs Model 95650 Cable Collar Clamp
The Cable Collar Clamps are necessary to properly affix the plow steel cable to the wing line. They are regularly supplied by Shand & Jurs as part of the complete system. They are made of machine steel and are available in 3″, 4″, 6″, 8″, 10″, 12″, 14″, 16″, 18″ & 20″ sizes. Be sure to specify pipe size when ordering cable collar clamps.
Shand & Jurs Plow Steel Cable
Plow steel cable combines extreme toughness with pliability and is ideally suited for raising and lowering the swing line. It readily withstands the strain imposed by the weight of the line and is sufficiently flexible to wind easily on the winch. For the greatest satisfaction, the necessary cable should always be ordered with a winch. It is available in 1/4″, 3/8″, 1/2″, and 5/8″ diameter.
95500 Cable Sheave Brackets (Open)
- Operates Standard or Heavy Duty Swing Lines
- Designed to accommodate 3/8″. 1/2″, or 5/8″ Steel Cable
Description
The Shand & Jurs Series 95500 Cable Sheave Brackets are designed to operate standard or heavy duty type swing lines. The cable sheave bracket consists of a rugged base plate and an upper or load sheave. Two lower guide sheaves assure the proper alignment of the plow steel cable which passes through a cast iron stuffing box.
The construction of the base plate is such that the front edge of the base plate is either welded or bolted to the top angle iron of the tank shell. This ensures centering the load and stress on the tank shell rather than on the tank roof plates.
The Series 95500 Cable Sheave Brackets are available in the two basic models: the standard weight construction or the heavy duty weight construction. Each is available for welding or bolting installations. The second model is a removable bracket configuration and options are available for welding or bolting of standard weight bracket. The heavy duty bracket is for welding option only.
To ensure continuous service and smooth operation, the cable sheave brackets use graphite bronze bearings. The stuffing box is designed to accommodate 3/8″, 1/2″, or 5/8″ steel cable. For special requirements, a single or double type sheave bracket can be specified.
95506 Cable Sheave Cases (Gas Tight Types)
- Operates on Pressurized Product Storage Tanks Without Loss of Vapors
- Designed for Tight Gas Operation Within the Range of 4 oz. of Pressure to 3 oz. of Vacuum
Description
The Shand & Jurs Model 95506 Cable Sheave Case is designed to operate on pressurized product storage tanks without loss of vapors. The entire unit consists of a roof plate and three sheave cases. For ease of operation and long service life, each sheave is bushed with bronze collar bushings. Standard sheaves can accommodate cables up to 3/4″ diameter. For heavier cable requirements consult factory for availability.
The Model 95506 patented Cable Sheave Case is made from quality materials and backed by the Shand & Jurs reputation for providing reliable products to the petroleum and other related industries. This unit is designed for gas tight operation within the range of 4 ounces of pressure to 3 ounces of vacuum. For higher pressure or vacuum requirements, simply extend the length of the liquid seal.
This model can be operated in applications where freezing of condensate is a serious problem. In such cases, keeping the inner sheave housing clear of water is imperative. The use of anti-freeze or similar liquid in the seal should provide good protection. Gas Tight Sheave Cases are available for welding or bolting to tank roof.