A check valve that closes abruptly can make itself heard throughout a pump system. Silent check designs aim to reduce that closing impact by responding as forward flow falls, before significant reverse velocity develops.
Farpro’s range includes the HC41X silent check valve and the SK300 slow-closing model below. They use different closing arrangements, so the better choice depends on the pump duty and the behaviour of the pipeline.
Closing Response in Water and Pump Systems
A spring-assisted silent check uses a short disc movement and spring force to help return the disc toward its seat as flow decreases. A slow-closing valve uses a different approach to the closing sequence. The two should not be treated as interchangeable simply because both are intended to reduce closing disturbance.
These valves are considered for water supply, circulation and pump installations where reverse flow, noise or pressure transients need attention. The pump’s operating range, pipe profile and shutdown conditions help establish which response is appropriate.
No check valve can guarantee a surge-free system on its own. For long rising mains or complex pumping stations, hydraulic assessment may be needed alongside valve selection. Notre pump discharge check valve guide explains why flow conditions matter.
Silent and Slow-Closing Check Valves
Clapet anti-retour silencieux en fonte à bride – HC41X
The HC41X silent check valve is designed for automatic reverse-flow protection in water and pump systems. Its closing arrangement helps
Fermez lentement le clapet anti-retour silencieux. – SK300
Le clapet anti-retour silencieux à fermeture lente SK300 est un type de clapet anti-retour conçu pour fonctionner silencieusement et empêcher
Compare these models with clapets anti-retour à battant or browse the complete check valve range.
When the Pump Stops
If you are investigating a closing noise or pressure surge, tell us when it happens: during a normal stop, a power failure or a change between pumps. That is often more useful than describing the valve as simply “noisy”.
For a new installation, share the pump duty and pipeline arrangement. We can help compare the available valve designs and their place in the system.
Farpro Valve est un grand fabricant mondial de vannes engagé dans la recherche, développement, production et vente de vannes.
Nos normes de produits incluent: GB/JB, API, ANSI, AWWA, DEPUIS, IL, GOST, NF, etc..
Nos vannes sont disponibles en 12 grandes catégories, 200 série et 4000 tailles, y compris les vannes, vannes à soupape, robinets à tournant sphérique, les vannes papillon, clapets anti-retour, vannes à membrane, réducteurs de pression, vannes à boisseau, pièges, etc..
La production annuelle atteint 80,000 tonnes. Tous les produits sont largement utilisés dans le pétrole, pétrochimique, chimique, pouvoir électrique, métallurgie, conservation de l'eau, construction, pharmaceutique, drainage et autres domaines.
Nos produits se vendent bien sur les marchés allemands, Angleterre, France, Italie, Brésil, Pologne et plus de 30 pays et régions d'Europe, Asie centrale, Asie occidentale, etc..