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Presenting check valves for steam and other fluids. Check valves with disc and spring construction that assures performance with installation in either vertical or horizontal pipelines. Automatic valves for preventing backflow.
Operating Pressure Range: 0 - 425 psig
Operating Temperature Range: -148 - 662 F
Reliable Backflow Prevention
Mechanically prevents backflow.
The valve seal provides an extremely tight seal.
Easy to Use
There are no restrictions on installation orientation (horizontal, vertical).
After the valve has closed, it opens again at the slightest pressure differential.
Long Service Life
TLV's unique center-guided disc (CK3MG, CKF3MG, CKF3RG) offers greater durability.
Application Areas
Suitable for use in the following applications:
CK3M, CKF3M, CK3MG, CKF3MG (metal valve seat) - steam.
CK3T (PTFE valve seat) - steam, hot water.
CK3R, CKF3R, CKF3RG ( Nitril or Fluorine rubber valve seat) - non-hazardous gasses, air, hot water, water, etc.
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The compact wafer-style design and round unobstructed port of the Tyco Prince Wafer-Check Valve tackle many tough applications throughout industry. Offering elastomer and polymer seating materials, it is heavily used in chemical, petrochemical, water/waste water, mining, HVAC systems, power, pulp and paper, refrigeration, agriculture, oil production and most other industrial applications. Available 2" through 48", Prince wafer check valves significantly minimize the required piping support, assuring low installation and maintenance costs when compared to traditional full-bodied check valves. Adaptable with outside lever and weights, internal or external springs, the Prince Wafer Check can solve many specific application problems.
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Soft-Seat Copper Check Valves:
Parker's Soft-Seat Copper Check Valves are used in refrigeration and air conditioning systems to maintain flow in only one direction. Internal components seat or "check," preventing flow back through the valve. These products are often used in conjunction with dryers or strainers to ensure unidirectional flow, with compressors to prevent liquid refrigerant from flooding back to the inlet, or in system lines to redirect flow to another circuit.
Application:
Refrigeration and air conditioning systems.
Features and Benefits:
Soft-seat valve features a Neoprene o-ring that seals to a metal seat for low refrigerant leakage (10cc/min. compared to traditional check valves with 750 cc/min.).
Brass piston seat and steel piston provide corrosion resistance and durability.
Sweat connections in a variety of sizes provide for easy installation and simplified brazing.
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Parker's Copper Ball Check Valves are used in refrigeration and air conditioning systems to maintain flow in only one direction. Internal components seat or "check," preventing flow back through the valve. These products are often used in conjunction with dryers or strainers to ensure directional flow, with compressors to prevent liquid refrigerant from flooding back to the inlet, or in system lines to redirect flow to another circuit.
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The Selas automatic firecheck, or flame arrestor, is basically a check valve which is closed by actuation of a thermal release. Components include a shut-off valve, check valve, corrugated fire screen, and a thermal latch. In normal operations, the combustible fuel/air mixture passes freely through these components. If flashback occurs,the sudden increase in back pressure will cause the check valve to close and momentarily interrupt the forward flow of the fuel/air mixture. The reduced flow and the internal configuration of the firecheck allow the backward-traveling flame to stop at the fire screen. The tiny holes and chilling capacity of the fire screen hold the flame on the screen until the thermal element is heated and releases the latch to close the shut-off valve. This valve-closure stops fuel/air flow and prevents the flashback from proceeding past the firecheck. The shut-off valve remains closed until manually reset.
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The M system has been conveiced for installations susceptible to severe water hammering. It is very reliable and particularly quiet (no moving mechanical part, anti-incrustation closing system).
Perfectly suited for pressure pumps, fire hydrants, engine-driven pump units or electro-pump units and compressed air circuits.
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Series 6400/6600
ASME NB Certifi ed: Steam & Air
Sizes 1 X 2 to 4 X 6. Actual orifi ce areas from 0.150 to 7.087 square
inches. Pressures from 15 to 1500 psig. Temperature range from -20 F
to +1000 F. Steel body and bonnet with stainless steel trim.
Double blow down ring design meets the requirements of Section I of
ASME Code. Temperature equalizing disc for maximum seat tightness. Available
with exposed spring (6400) or closed bonnet (6600). Full nozzle design
for ease of maintenance.
Applications: steam boilers (6400) and organic fl uid vaporizers or hot water
boilers (6600).
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Pressure Relief Valves
* Fine pressure adjustment
* CNC precision machined parts
* Cost effective and reliable
* Variety of materials available
* Right-angle, 3-port design
Sigmamotor pressure relief valves operate when the system pressure raises above the set pressure of the valve to protect systems from damage due to blockages or excessive pressure situations.
Inside the valve a spring holds a diaphragm against the valve seat until preset pressure is exceeded, then the diaphragm is forced up and the material in the system is forced out of the relief port. The valve is set at 65psi at the factory but is easily field adjustable.
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Presenting pressure reducing valves for steam and air. A wide assortment of models is available, including pilot operated models, direct-acting models and models with integral separators and steam traps.
Operating Pressure Range: -12 - 300 psig
Operating Temperature Range: 32 - 428 F
Valves for controlling steam or air pressure. They provide the prescribed pressure even when flow rates fluctuate.
Selection can be made from among a wide assortment of models - including pilot operated and direct-acting models and models with integral separators and steam traps - to suit the objective or application.
The high precision pressure reducing valves for process applications employ a separator with steam trap and shock-absorbing spherical piston to yield a superior flow rate characteristic.
The basic configuration of the reducing valves for air is identical to that of those for steam, and therefore also yields a superior flow rate characteristic.
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Managers of vehicle service centers can now turn to our new thermal pressure relief device to protect against possible damage to their closed pipe systems caused by thermal expansion. For example, as oil warms, it expands and causes pressuresometimes oil that was 300 psi becomes 2,000 to 3,000 psi. Such pressure spikes can cause costly damage if they exceed the design capacity of pipes and system components. Our pressure relief valve returns fluid/material back to the tank, limiting the pressure to protect the system.
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INTRODUCTION
One-way valve for in-line use.
Suitable for any type of hydraulic system using
liquids that are not highly viscous. The standard
types are in zinc plated carbon steel and are
therefore especially suitable for non-corrosive mineral
based oils and liquids.
FEATURES
Standard types: Good pressure / flow characteristics, see graphs. Valve body in zinc plated carbon steel. Piston in carbon steel. Internal spring in silicon steel - stabilized. Cracking points 5 psi and 65 psi are standard,
other values on request.
ALTERNATIVE USES
As a pressure sequence valve by changing the
internal spring to an appropriate 'cracking point' value.
For flow restrictor check valves a central bleed hole
can be provided, sized to customer requirements.
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APPLICATION
Manually operated check with flow limiting
Non return valves or bypass low pressure reliefs
L/min
(US GPM) bar (PSI) PRODUCTS
12
(3) 350
(5075) FPR1/4
30
(8) 350
(5075) FPR3/8
45
(12) 350
(5075) FPR1/2
85
(22) 300
(4350) FPR3/4
140
(37) 250
(3625) FPR1
220
(58) 250
(3625) FPR11/4
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Equipped with drop weight and hydraulic damper it achieves best function properties. Even the combination of rotary process and check valves belong to the recent delivery program.
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The STAUFF hydraulic accessories programme has
been carefully designed to offer a range of components
suited to the demands of building hydraulic
systems in most industrial and mobile applications.
Whether you require simple filler breathers or precise
electrical level switches, flow control valves or
complete filter units; the STAUFF accessories range
should provide you with the choice you need.
At STAUFF we are aware of the ongoing development
and innovation within the hydraulic industry.
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Description:
The Becker Pressure Relief Valve is designed to be used with regulated natural gas supply systems that provide power to pneumatic valve actuators and instrumentation. In the event of supply gas regulator failure, the Pressure Relief Valve protects pneumatic components from overpressure. The Pressure Relief Valve is an inexpensive, compact, maintenance free safety mechanism which will ensure protection of your pneumatic actuators and instrumentation.
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LMI's diaphragm back pressure/anti-syphon valves apply positive discharge pressure to a metering pump system and act to stabilize the output of higher output LMI Metering Pumps when pumping into low or no-pressure systems. Pressure relief valves are designed to protect chemical feed systems from overpressure damage caused by defective equipment or deadheading. Valves are available in 1/4", 1/2", and 1" sizes in PP, PVC, PVDF, and 316SS.
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The Classic Lee Chek is offered in three basic configurations:
o 0.187 and a 0.250 inch diameter axial flow ball-type designed for 3,000 psi systems and available screened and unscreened, forward and reverse flowing.
o 0.187 and a 0.343 inch diameter with convenient side exit porting and enhanced silt resistance. The 0.187 inch diameter is available screened and unscreened, with forward flow only for 4,000 psi systems. The 0.343 inch diameter is available unscreened, with reverse flow only for 5000 psi systems.
o And 0.187 inch diameter Zero Leak, poppet-style, axial flow design with a choice of three different elastomers. Available screened and unscreened, forward and reverse flowing for 3000 psi systems.
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* Check valves
o with threaded connector - Steel DN 4 - DN 50
o Full flow, no reduction
o Custom orders on request
o All dimensions subject to change without notice
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Series 4200
ASME NB Certifi ed: Steam
Sizes 1-1/4 X 1-1/2 to 6 X 8. Actual orifi ce areas from 0.316 to 11.39 square
inches. Pressures from 15 psig to 1000 psig. Temperature limit to 1000 F. Steel
body and open bonnet with stainless steel trim. Chrome moly body above 800 F.
Double adjusting ring design to meet the blow down and overpressure standards of
Section I of the ASME Code. Temperature equalizing disc for maximum seat tightness.
Full nozzle design for longer life and ease of maintenance. One piece guide mounted
low in the body for positive alignment.
Applications: steam boilers
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Check valves are poppet style elements that allow free flow in one direction while preventing flow in the reverse direction. They can be used to isolate portions of a hydraulic circuit or to provide a free flow path around a restrictive valve.
Types:
Nose to Side Checks
Soft Seal Check Valve
Side to Nose Check Valve
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FEATURES:
- EVERY PC IS TESTED for leakage.
- OPTIONAL ORING PORTS to eliminate leakage.
- STEEL BALL will not jam, lock or seize and will always open.
- DELRIN CHECK SEAT for zero leakage.
SPECIFICATIONS:
- Pressure rating 3000 psi (207 bar).
- See creating a model code for flow capacity and port sizes.
- Weighs 0.7 lbs (0.3 kg).
- 30 Micron Filtration Recommended.
MATERIALS:
- Cast Iron Body
- Buna N ORings
- Chrome Alloy Steel Ball
- Delrin Check Seat
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The Copes-Vulcan Multiple Nozzle Spray Desuperheater offers optimum performance and rangeability in a variable spray tube design. The MNSD fills the performance gap between the limited capability of a simple mechanical spray type desuperheater and the virtually unlimited capability of Copes-Vulcans Variable Orifice Desuperheater. The MNSD offers high temperature capabilities and up to Class V leakage rating.
Features:
- Temperature control to within 15F (8C) of saturation with the ability to hold set point within a tolerance of 10 F (6C)
- Standard maximum available Cv of 10.5 (Kv of 8.9)
- Water flow turndown of 150:1 or higher
- User friendly design - nozzles and trim assembly can be removed without disconnecting the actuator
- No need for separate cooling water control valve
- Designed for applications with temperatures up to 1150F (620 C)
- Available in standard classes 600, 900,1500 and 2500 per ANSI B16.5
- Cooling water inlet pressures up to 3500 psig (24 MPag)(higher pressures on application)
- FCI 70-2/ANSI Class IV or Class V shutoff capability
- Suitable for vertical or horizontal installation
- Standard ANSI connections are 3" (80mm) raised face flange (steam) and 1.5" (40mm) raised face flange (water)
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Both steam pressure reduction and temperature reduction (Desuperheating) are done in a single valve making it an extremely efficient, cost effective and compact solution.
Features
- Compact Design
- High turndown (40:1)
- Reduced noise level
- Efficient cooling water atomization
- Reduced straight runs for pressure and temperature measurements
- Better control over change in flow
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Back pressure relief valves; Panel mounting available; Large flow rate
Material:Body-PVC; Diaphragm membrane-Viton+Teflon plate
Adjustable range:5~100 psig
Working temperature:60C
Working fluid:Water corrosive liquid
Mounting type:Straighted on pipe line
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Reliable Pressure Relief:
Hayward Pressure Relief Valves protect piping system components from damage due to over pressurization. The valves work by sensing system pressure. When the system pressure exceeds the set pressure, the force of the excess pressure moves the valve piston off its seat to relieve the excess pressure and diverts some of the flow out the discharge port.
Easy to Set Pressure:
Hayward Pressure Relief Valves can be set by hand, no tools are needed, to relieve pressures from 5 to 75 PSI. Each size of relief valve is designed to cover this complete pressure range with just one, non-wetted, plastic coated spring. There is no need to change springs for different pressure ranges as with ordinary relief valves.
Molded Gauge Port:
An integrally molded 1/4" NPT gauge port on the valve body makes installation of a gauge to monitor the relief pressure easy. No drilling or extra fittings are needed.
No Corrosion Failure:
These all plastic relief valves have no metal parts and will never fail, jam or stick because of rusted or corroded components. They require no painting or epoxy coatings to survive corrosive environments.
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Series 3800
ASME NB Certified: Air, Steam & Water
European CE Approved
Sizes 1″ X 2″ to 12″ X 16″. Actual orifice areas from 0.15 to 109 square inches. Pressures
from 20 to 6170 psig. Temperature range of -450 F to +500 F. Steel body and
bonnet with stainless steel trim. Semi-nozzle design.
The D to T orifices meet API Standard 526 covering orifice areas and center-toface
dimensions. Full bore designs available with 1″ through 12″ inlets and orifice
areas from 0.719 to 109 square inches giving maximum capacity for a given inlet size.
All stainless snap acting and modulating non-flowing pilot controls minimize product
loss and provide maximum resistance to corrosion.
Standard O-ring elastomer seat main valve and pilot control minimizes fugitive emissions
and allows operation within 95% of set pressure. Materials include Viton, Buna
N, ethylene propylene, silicone and Teflon. Optional materials of construction include
complete 316 stainless steel.
Applications: air, steam, gas, vapor, and liquid services where maximum seat tightness,
operating pressures and precise adjustment are required. Excellent for natural
gas pipeline and compressor service.
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ADJUSTABLE RELIEF VALVES
It protects the side channel compressor / vacuum from overpressure.
Safety pressure easyly adjustable.
Working temperature between -10 and 120 C.
Indistinct use for pressure or vacuum.
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PTFE Pressure Relief Valves
Features
• High reliability
• Factory set
• Low pressure drop
• All mechanical
• Right-angle flow
• Flare type connection
• Bubble tight seal
Applications
• Special semiconductor equipment relief valve applications.
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Quik-Vent
Vacuum/Pressure Relief Valve
Series 684
Controls unsafe pressure conditions
The Quik-Vent vacuum / pressure relief valve is an excellent safety device for mounting on storage silos, bins or any other container to relieve excessive or unwanted air pressure that might be generated by a pneumatic conveying system or other process equipment.
Unsafe conditions are easily controlled by the Quik-Vent vacuum/pressure relief valve. Generous ports quickly exhaust air or gases to protect against sudden positive or negative pressure conditions.
Optional sensors are also available to provide an electrical signal to indicate when over or under pressure conditions are present.
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