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Cepex designs and manufactures an extensive family of check valves that can be used for a wide range of applications. These valves provide an exact and reliable control of fluids, and have been designed to offer maximum modularity and flexibility.
Spring check and ball versions are available in PVC-U and Corzan CPVC. As with other Cepex valve products, check valves are available in accordance with several dimensioning standards (Metric, BSP, ASTM, NPT, British Standard, JIS...).
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Pressure relief valve
- Reliable
- Compact form
- Maintenance free
- Use of non corrosive materials
- Easy disassembling and inspection
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The ASTER ball valve, with full bore, is compact, flexible and easy for installing.
Blow-out proof system, with perfect air bubble sealing, does not need any maintenance, is equipped with wrapping seats ensuring long life cycles. The stem packing is composed of 3 seals: two o-rings for low pressure and an antifriction ring in PTFE for high pressure.
All valves are tested at 25 bar pressure, for a period longer than 48 hours.
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● Low Lift Safety Valves
● Material: Body-Cast Bronze, Valve Seat-Brass
● Orifice Size: 1/2"(15mm), 3/4"(20mm), 1"(25mm), 1¼"(32mm), 1½"(40mm), 2"(50mm)
● Working Pressure: 2~10 kgf/cm², 11~20kgf/cm²
● Working Temperature: -45~+185ºC
● Working Fluid: Noncorrosive gas, noncorrosive liquid, air, steam
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Safety Relief Valves
Size range : DN6 - DN20 1/4" - 3/4"
Pressure rating : Up to 44 BAR
End connections : Inlet screwed male, outlet screwed female
Configurations : Angle relief, thermal relief, in-line relief
Materials : Bronze, gunmetal, austenitic stainless steel on request
These valves are designed for the protection of static and road-going storage tanks against damaging over pressurisation.
There are three basic sizes defined by the throat diameter and these are available with a variety of inlet and outlet connections the valves are designed and factory set to lift repeatedly within +/- 2% of the set pressure, and to re-seat above 92% of set pressure. Spring pre-compression and blow-down ring settings are lead sealed after test to inhibit unauthorised tampering, as these products are a category four-safety product. During testing pre-delivery, flow rates at 10% above set pressure are measured to ensure compliance with stated flow capacities.
The valves can be supplied with appropriate positioned drain holes to help prevent freezing caused by water ingress, though ideally the piping should be arranged to prevent this. Complete vessel protection assemblies can be supplied comprising of two relief valves, divertor valve, bursting discs and interconnecting pipe-work
Each valve is individually calibrated and stamped with the date of manufacture, and has it’s own unique serial number prior to dispatch.
All materials used are selected for their suitability to function at cryogenic temperatures. All valves are degreased for oxygen duty.
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DESCRIPTION
Bronze/Brass safety/relief valves for protection of hot water heating boilers, systems, cookers, sterilizers and similar equipment.
FEATURES
o ASME Certified Capacity
o 20-60 psig Set Pressures
o Corrosion Resistant Construction
o Polished Chrome Finish
o Directive 97/23/EC (PED) Compliance Available
o MADE IN THE USA
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Series 2700
ASME NB Certified: Air, Steam & Water
European CE Approved
Sizes 1/2%u2033 X 1%u2033 to 1-1/2%u2033 X 2-1/2%u2033. Effective orifice areas from 0.068 to 0.573
square inches. Pressures from 15 to 6500 psig. Temperature range of -450° F
to +750° F.
Stainless steel body and trim with carbon steel bonnet. Optional materials of
construction include complete 316 stainless steel, Monel, and Hastelloy C.
Materials suitable for NACE service available.
Available with threaded, flanged, socket weld, welding nipple or sanitary connections.
Optional O-ring seat for ultimate tightness. Maximum blow down
of 10% to 20% on all fluids. Balanced design available in %u201CC%u201D and %u201CD%u201D orifices
which nullify effects of backpressure.
Applications: air, gas, vapor, and liquid process service.
Series T6000
Series
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Liquids, steam and gases - SOMAS check valves are suitable for all of them. This valve is designed and made for clamping between flanges. SOMAS provide two types, with or without a spring, both made from stainless steel to meet the demands of our customers.
High capacity and short closing time are the check valves great advantages. The closing time is short due to the seat angle in the body, which makes the check valve especially well suited for liquids, steam and gases. Another advantage of the check valve is that it can easily be disassebled by the customer for cleaning or shaft replacement.
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Description:
The Becker Thermal Check Valve (TCV) is designed for use with regulated natural gas supply systems. The Thermal Check Valve offers simple and inexpensive insurance against fire in natural gas regulating stations, compressor stations, or other areas where regulated natural gas supply systems are present. The Valve stops the flow of combustible natural gas into potentially hazardous areas in the event of fire or excessive heat.
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Protection of drinking water networks against backflow of polluted water : backflow preventers, other protection systems, pressure reducers and water meters.
Water is the most precious of our natural resources. Whatever its destination, domestic, urban, agricultural or industrial, the water we use every day is distributed through an increasingly complex network of interconnected pipelines.
The risk of pollution coming from backflow ( backsiphonage or backpressure) is even greater when the different pipelines networks are closely interconnected.
The choice of a suitable protection system must then be made in relation to the level of risks induced by the fluids being used and transported.
Danfoss Socla is today the only European manufacturer to offer such a vast range of protection devices for every level of risk. Our valves -which ensure complete safety- are presented by descending level of risk.
Danfoss Socla offers also a complete range of pressure reducing valves in order to protect the water network against the risk of overpressure.
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Series 1890/1896M
ASME NB Certifi ed: Air, Steam & Water
Sizes 1/2 X 1 & 3/4 X 1 (1890) and 1/2 X 3/4 & 3/4 X 3/4 (1896M).
Effective orifi ce areas of 0.077 (liquid) and 0.089 (vapor) square inches. Pressures
from 15 to 800 psig for stainless steel (1890) and 15 to 300 psig for bronze
(1896M). Temperature range from -20‹ F to +750‹ F (1890) and -450‹F to +400‹F
(1896M).
Materials of construction include stainless steel body and trim (1890) and brass
body and trim with bronze bonnet (1896M).
Applications: air, steam, gas, vapor and liquid process applications (1890) and
where service is compatible with brass and bronze (1896M). Also suitable for
cryogenic applications.
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Positive Displacement (PD) pumps should always be installed with a Relief Valve in the discharge line, to protect the pump and piping against any type of line blockage, including the inadvertent closing of an isolation valve. Liquiflo manufactures two sizes of relief valves in both 316 Stainless Steel and Alloy-C.
Ten standard Liquiflo Relief Valve models are available, based on the body material, the port size, and the pressure setting range (see chart below). Models RV1000, RV1001, RV2000 and RV2001 are factory preset to discharge at 100 PSI (7 bar) unless a different pressure setting is requested when ordering; other models are preset to the pressure setting specified when ordering.
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Check valves allow the flow of refrigerant in one direction only by automatically closing when fluid attempts to flow in the opposite direction. The check valves are used generally used to protect compressors, pumps but also other apparatus from damage by liquid refrigerant.
Several constructions of check valves are available. Revalco chooses for a spring loaded valve construction of which, when opened, the valve body is completely outside the main stream.
Advantages:
- Cage construction NB 100-150 (4"-6") prevents hammering or whistling as a result of too large/small valve
- Standard supplied as a PN40 design. (on request PN52).
- High Kv values resulting in low pressure drops.
- Modular buid up stop-, regulating-, check- and stop check valves makes possible chang-over in existing installation.
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The valves are especially designed for protection of components against excessive pressure and to meet the strict quality demands and safety requirements for industrial refrigeration installations, specified by international classification societies
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Revalco Safety valves are springloaded safety devices for protection against inadmissable pressures.
The valves can be used for protection of pressure vessels, compressors, liquid lines and in all places where overpressure could severely damage the installation and/or the surroundings
Working media
Applicable for all common refrigerants such as NH3, R22, R134A, R404A, R502, R507, R404A, R407C, R410A and non-corrosive gases/liquids. When using brines or refrigerants other then the above mentioned please consult your local Revalco representative.
Testing and Certification
Every valve will be calculated according to EN13136 and factory tested according to EN12284. The Design is according to CE PED 97/23/EC.
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TYPE DISC, DUAL PLATE, SWING, TILTING, DYNAMIC
SIZE RANGE 1-1/2” TO 80”
BONNET TYPE BOLTED, PRESSURE SEAL, Y-PATTERN
MATERIAL WCB, WC6, WC9, C5, C12, CF8, CF3, CF8M, CF3M, CF8C, CF10, DUPLEX,
INCONEL, MONEL, HASTELLOY
PRESSURE RANGE CL 150 TO 4500
ENDS SCREW, SOCKET WELD, BUTT WELD, WAFER, LUG
FLANGE: ANSI, JIS, DIN
OPERATOR DYNAMIC, DASH POT, HYDRAULIC, LEVER WEIGHT
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Check valves
They are used to prevent liquids, gases or steam back flow in pipes. They are also indicated to pumping or vacuum breaking applications.
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sf non return valves close the through flow in one direction (the return) and allow an almost unrestricted flow in the other direction (the flow). As long as the flow pressure is greater than the return pressure, the valve remains open (providing there is sufficient pressure acting against the spring). If the return pressure exceeds the flow pressure, the valve is pressed against the seat, thus closing the flow.
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Specifications:
- Port Size: 1/2"
- Maximum Pressure: 15kgf/cm2
- Proof Pressure: 20kgf/cm2
- Material: ZDC-3
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The RV-5200 and RV-5300 Series operate as either a relief valve or low flow back pressure regulators. Adjustments are made through a non-rising stem available with an attractive knob, plain to allow insulation of OEM knobs, or flush for "back panel" applications. A typical application would be the use of a unit between a compressor and a load to prevent the compressor from "loading up" when dead-ended.
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Description
System-medium controlled overflow valves are simple and compact regulating devices which enable the flow to be precisely controlled; they are easily installed and maintained and control the pressure upstream of the valve without additional control elements being required. At the valve plug the upstream pressure to be controlled is in equilibrium with the force exerted by the valve spring.
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- Model / code: S153
- Category: Safety Valve
- Body Material: Brass or stainless steel
- Inlet Pressure: 450 bar
- Outlet Range: 5-450 bar
- Connections: 3/8 " BSPP
- Valve Size: 5 mm
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TYPE GATE, GLOBE, CHECK
SIZE RANGE 1/2” TO 24”
BONNET TYPE BOLTED
MATERIAL CF8, CF3, CF8M, CF3M, CF8C, CF10, DUPLEX, INCONEL,
MONEL, HASTELLOY …etc
PRESSURE RANGE CL 150, 300, 600
ENDS BUTT WELD
FLANGE: ANSI, JIS, DIN
OPERATOR HANDWHEEL, CHAINWHEEL, BEVEL GEAR, PNEUMATIC,
HYDRALIC, MOTORIZE
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The Advantages at a Glance
Customer-specific design
Compact design and smaller envelope dimension is achievable with the Steripur Series actuators
Combination of many different nominal diameters
Optimized drainability
Minimized dead leg
Reduces surface contact, hold up volume and cross contamination of the product
Reduction of fittings, tubing and field welds in the system
Reduces qualification and validation documentation requirements
All end connections and materials are
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The Solution For High Flow& High Pressure Requirements
- Flows up to 240 gpm
- 5000 psi (6000 psi intermittent)
- Pneumatic, hydraulic or solenoid operated
- Full Cartridge Style Valving
- Low Leakage
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Normally Open, Normally Closed, Air Pilot Actuated.
These valves open or close high pressure oil or plain water back to tank or to another line or high pressure
gas to another line. High pressure section alloys are stainless steel with stainless steel ball or poppet design.
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Weir SPM's Full Bore Unloading Valves provide over-pressure protection for pumps operating under a variety of pressures and flow conditions. The valves are compact, simple to operate, and rely on the system's pressure to open when a preset pressure is exceeded and automatically snaps shut when the pressure drops.
Features/Benefits
The valves are externally adjustable, and unlike shear relief valves which use common nails to trigger the valve, Weir SPM's Full Bore Unloading Valve utilizes nitrogen or rig air (properly filtered) to activate opening and closing. This model is available in 3" and 4" sizes. Operating pressures range from 5,000 psi to 20,000 psi. Standard service and sour gas models are available.
Remote Relief
Utilized together, the Full Bore Unloading Valve and Remote Control Panel increase safety for operators on drilling sites. Weir SPM designed a Remote Control Panel to work in conjunction with Weir SPM's Full Bore Unloading Valve (drilling applications) and the Emergency Backpressure Relief Valve (well service applications). The Remote Control Panel's primary function is to regulate the flow of air or nitrogen to the relief valve from a designated control station, allowing the operator to change the pressure relief settings with the turn of a knob at a safe distance.
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Spring-loaded, direct action relief valves for venting excess gases from pipelines and other equipment.
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