A wafer check valve fits between mating pipe flanges, providing automatic reverse-flow protection in a short body. It is worth considering where a conventional flanged check valve would take up too much space along the line.
Farpro’s wafer range includes the DH77X model shown below. Its product page lists the materials and dimensions for checking against a new piping layout or an existing installation.
The compact body is only part of the choice. The closing mechanism, seal material and available disc clearance also affect how the valve fits and works. Ons check valve range includes flanged and silent designs if the line calls for a different arrangement.
Wafer Check Valves and Closing Mechanisms
Handmatige Wafer-vlinderklep – D71X
D71X handmatige wafer-vlinderklep wordt veel gebruikt in verschillende watertoevoer- en afvoerleidingen, bouw- en brandbestrijdingssystemen,
Elektrische Wafer-vlinderklep – D971X
D971X Elektrische wafer-vlinderkleppen zijn een soort industriële klep die een elektrische actuator gebruiken om de stroom te regelen
DH77X Wafer Check Valve
The DH77X is a compact wafer check valve installed between pipe flanges. Its spring-assisted closing mechanism provides automatic reverse-flow protection
“Wafer” describes the installation between flanges; it does not specify a single closing mechanism. Wafer check valves may use a single disc, two plates or other arrangements, with a spring assisting closure on some designs. The spring arrangement is part of the valve design, rather than a setting to change on site without the manufacturer’s instructions.
Before fitting the valve, allow clearance for the closing element to open without touching adjacent pipework or equipment. Mating flange dimensions and installation orientation also need to suit the model.
De DH77X wafer check valve combines a cast iron body and disc, stainless steel spring and NBR seal. Those details help distinguish it from other compact non-return valves that may look similar from the outside.
Working With Limited Installation Space
Space is often the reason a wafer valve is chosen, especially during a retrofit. A sketch showing the gap, flanges and nearby fittings helps us understand the installation before recommending a model.
Send us the details you have, even if the original valve number is no longer readable. We can work from the existing arrangement and discuss the available options.
Farpro Valve is een grote wereldwijde kleppenfabrikant die zich bezighoudt met het onderzoek, ontwikkeling, productie en verkoop van kleppen.
Onze productnormen omvatten: GB/JB, API, ANSI, AWWA, VAN, HIJ, GOST, NF, enz.
Onze kranen zijn verkrijgbaar in 12 grote categorieën, 200 serie en 4000 maten, inbegrepen schuifafsluiters, bolkleppen, kogelkranen, vlinderkleppen, terugslagkleppen, membraan kleppen, drukreduceerventielen, plug kleppen, vallen, enz.
De jaarlijkse productie bereikt 80,000 ton. Alle producten worden veel gebruikt in aardolie, petrochemisch, chemisch, elektrische energie, metallurgie, waterbehoud, bouw, farmaceutisch, drainage en andere velden.
Onze producten verkopen goed op de Duitse markten, Engeland, Frankrijk, Italië, Brazilië, Polen en meer dan 30 landen en regio's in Europa, Centraal-Azië, West-Azië, enz.