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| Globe check valve type CV/F, PN 16, suitable for vertical and horizontal installation, body material: ductile cast iron EN-JS 1049 acc. to DIN EN 1563 (0.7043 DIN 1693), solid ball made of PTFE, epoxy coating, stainless steel nuts and supplier of bolts, face to face: DIN EN 558-1, basic series 1, ISO 5752 series 1 (DIN 3202F1), flange connecting dimensions: DIN EN 1092-2 type B, ISO 7005-2 type B (DIN 2533) |
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Donadon SDD manufactures rupture discs in special executions according to European Directive 94/9/CE (ATEX), certified Ex II 2 GD. Therefore these discs may be used in locations where the presence of explosive atmospheres is probable (locations classified as category 1, 21, 2 and 22).
Rupture discs available in ATEX certified execution are the following models: SCD, DCD, DIF, TCD and Y90.
For these applications we recommend the intrinsic safety alarm system NAM 01 certified Eex ia IIC T6 according to European Directive 94/9/CE (ATEX).
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Donadon SDD manufactures metal and composite rupture discs according to norm EN ISO 4126-2. Available models are recommended for use with liquids and gases under static, cyclic or pulsating conditions.
Donadon discs are also recommended for protection of pressure relief cocks.
Installation may be in disc holders, directly between flanges, or on threaded professional fittings.
Standard range covers diameters from ½” to 400”, rupture pressures from 0,01 to 4000 bar, operating temperatures from -196 to + 450°C.
Standard materials are Stainless Steel, Aluminium, Nickel, Monel, Inconel, Hastelloy; membranes are available in PTFE or metal.
Accessories like vacuum supports, linings, calibration rings, rupture indicators and manometers are also available.
Donadon SDD is glad to address special requirements and to develop designs in collaboration with customers
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The Flat Slotted Lined tension-loaded composite bursting disk offers and economic solution to many very low pressure applications.
This non fragmenting design is offered in an extensive size and material range, bringing, enhanced protection, reliability and leak-tightness through its unique tri-membrane construction. |
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| Specialists in rupture discs (rupture disks), bursting discs and the isolation of pressure relieve cocks, Fike has nearly 60 years of experience in understanding pressure relief systems. Fike has specific rupture disc products for different applications, rupture isolation procedures for pressure relief valves (safety relief valves), rupture disc calculation tools and rupture disc accessories and holders. |
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Donadon NAM 03/HT alarm system is recommended for installation with Donadon SDD rupture discs.
NAM 03/HT Alarm System is a proximity sensor installed in the disc holder downstream the disc in order to detect the bursting of the disc.
This magnetic field sensor is activated by changes in magnetic field. A target with a permanent magnetic is supplied with the disc; when the disc bursts the magnet is displaced and the sensor activated.
Replacement discs are supplied with a new target.
NAM 03/HT is an intrinsic protection device certified ATEX II 2GD Eex m IIC T4/T6 and ATEX II 1GD Eex ia IIC T3/T6and therefore may be used in locations where potentially explosive atmospheres with gas, vapors or mist are continually present (locations classified zone 0; 20 and 1; 21 and 2; 22 by European Directive 94/9/CE (ATEX)).
NAM 03/HT is normally supplied with 2m bipolar cable IP 67.
The cables of the alarm system must be connected to the plant’s safety system through an intrinsic safety barrier adequate to the location.
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| Integral Flo-Tel™ provides an excellent technical solution for identifying when a bursting disc functions within arduous operating conditions. After bursting, the disc is the only element to be replaced, thus eliminating expensive re-wiring costs. |
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| Rupture Disks are designed for reliable emergency relief of excess pressure since they instantaneously rupture at a specific predetermined pressure range. |
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Descriptions:
MPI extruder rupture discs are used for reliable economical pressure relief in plastic supplier of extruders.
The Inconel Disc material ensures they will instantly rupture at a specific pressure over a wide temperature range. |
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Donadon SU rupture disc is a sealed unit formed by a conventional disc with solid calibrated section mounted in a threaded connector suppliers.
This unit has been designed in order to make easy and reliable mounting small discs in plant environment and to simplify the handling without need of specialized manpower.
SU disc is suitable for use with gases and liquids in static or pulsating conditions.
It reacts to over-pressure in a few thousands of a second and is recommended for protection of plants, equipments and containers.
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Donadon SDD manufactures venting panels in special executions according to European Directive 94/9/CE (ATEX), certified Ex II 2 GD. Therefore these panels may be used in locations where the presence of explosive atmospheres is probable (locations classified as category 1, 21, 2 and 22).
Venting panels available in ATEX certified execution are both the rectangular models (PS/Ex/R) and the circular models (PS/Ex/C).
For these applications we recommend the intrinsic safety alarm system NAM 01 certified Eex ia IIC T6 according to European Directive 94/9/CE (ATEX).
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| Elfab offers a comprehensive range of rupture discs for protection against the hazards of dust explosion. |
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Description: This Ultra Miniature low cracking pressure check cock permits free flow in one direction and no (checked) flow in the opposite direction. This cock is specified in many applications because of its very low cracking pressure (typically less than 0.5 psig), its excellent repeatability, and leak-tight peration. Custom variations of barbed and threaded bodies are available. Contact the factory for details.
Material: Brass or 303 stainless steel.
Professional seals: Silicone. Optional materials: EPDM, Viton® and FFKM (Perfluoroelastomer)
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| Global Manufacturer of Hydraulic Check, Relief, Flow Control and Directional Control valves along with Quick Release Professional hose Couplings. Check valve manufacturer sizes to 2" and up to 6000 psi (414 bar)working pressure. Steel and Stainless Steel materials are standard with other materials available. |
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Check valves manufacturers for liquid flows or gas. Sealing through piston or elastomeric professional seals.
Pressure interval: 105 bar / 210 bar
Temperature interval: -20ºC / 200ºC
Connections: from 1/4" to 3"
Made in several alloys.
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VIC : IN LINE NON RETURN VALVE ( 3/8 , 3/4 , 1-1/4" SIZE)
VC4V : SUB-PLATE/THREADED/CARTRIDGE(3/8-1-1/2" SIZE)
VC5V : FLANGE TYPE ( 3/4, 1, 1-1/4, 1-1/2 & 2") |
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SWING CHECK VALVES SUPPLIER,
SS316/SS304/WCB BODY,
FLANGED END OR THREADED END,
PRESSURE: ANSI150/300, PN16/PN40;
OR 200WOG
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- with double sided pipe connections
- with screw-in spigot
- standard with Viton-seal and one bar opening pressure
- other variations according to customer requirements |
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Features:
- manufacturers of check valves and similar assemblies in complex execution and / or very small dimensions
- components made from all machineable materials
- hardened seats or sealing cones where required
- exact and burr-free professional seal seats for an optimal function
- seal seats also with pre-embossed seat
- sophisticated design of the casting parts is possible
- cocks to be screwed in or pressed in
- valves assembled with O-ring
- integrated cartridge screw valves |
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Schutte & Koerting Flap valves prevent backflow in steam and water lines to protect valuable equipment from damage.
Used in extraction lines from steam turbines to feedwater heaters, heating systems or process equipment, these cocks are engineered for exceptional reliability. S&K check valves are available in a variety of configurations for suitability to your application requirements. In addition, they can be manufactured with soft packing, hardened leak-off bushings, and various materials for critical applications.
Complete physical testing offered by S&K includes hydrostatic and pneumatic testing as well as magnetic particle (magnaflux) and radiographic (xray) inspection. All models are ANSI rated. |
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Value Plastics' unique DCV Series bi-directional double check cock is designed to transfer clean fluid from a supply vessel to a use site.
The fluid supply vessel is connected to the valve supply port (chimney) using a luer connection or tubing. The fluid is withdrawn from the supply vessel by a industrial syringe or other device connected to the aspiration port. When the syringe is compressed the fluid is then transferred, through the exit port, to the use site without adulterating the fluid.
The system provides high flow. Two inlet cracking pressure ranges, two supply port options and two exit port options are available. All luer tapers comply with the requirements of ISO Standard 594-1. DCV Series double industrial check valves are manufactured entirely from materials that comply with USP Class VI criteria and are compatible with ethylene oxide, gamma and e-beam sterilization procedures.
Typical applications include wound irrigation, interventional cardiology and radiology procedures, admixture and pharmacy operations and others. |
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Features:
The steel check valve manufacturers features a simple, compact, low cost, low pressure drop design. This design also allows for flexibility in function. It can be scaled to any number of standard and non-standard sizes. All steel construction and Viton professional seals make it a durable and reliable performer while its easy to manufacture design makes it a cost-saver.
Specifications:
-1.5" size
-Scalable diameter
-Up to 250 psi
-All steel construction
-Yellow Zinc Plating
-Viton Seals
-Back flow hole, if needed
-Quantity Discounts |
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Parker's Copper Globe check valves are used in refrigeration and air conditioning systems to maintain flow in only one direction. Internal components industrial seat or "check," preventing flow back through the cock. These products are often used in conjunction with professional dryers or strainers to ensure directional flow, with compressers 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 Y90 DONADON rupture disc is a compression (or reverse) disc peripherally scored.
The Y90 represents the high technology in the sector: the camber of the convex disc is not modified by the operating pressure except on reaching reverse pressure. Therefore this device works with ratios of up to 90% between operating and rupture pressure and withstands thousands of cycles without jeopardising its reliability.
At the moment of reversion the disc bursts in a few thousands of a second rupturing along the scored line without fragments
Y90 disc has lower sensitivity to variations in temperature than conventional discs and therefore is very useful in applications with large temperature variations.
It is especially suitable for use with gas and liquids, and for protecting pressure relief cocks
The wide choice of materials and the thickness used make the Y90 disc very resistant to corrosion. Greater protection can be obtained with a PTFE lining, which can be applied to the process side of the disc.
Vacuum support is normally not required
Available in special execution certified Ex II 2GD according to European Directive 94/9/CE (ATEX)
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Plug and Union devices bring versatility and facilitate installation of small manufacturer of bursting discs, requiring no flanges they are simply connected into the system requiring protection.
Elfab offer the economics and convenience of standard Plug and Union devices, which are capable of taking a range of replaceable bursting disc types enabling an extensive range of burst pressures to be achieved. In addition to the standard range, Elfab produces a wide range of customer specific design specials as disposable devices to meet the diverse needs of our customer base. |
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Valves, Clappers, Bursting discs
