Disc

Disc-spring check valves are used to prevent reverse flow in water, steam, condensate, technical gas, compressed air, and industrial liquid systems. Operation is based on a disc that opens under the differential pressure of forward flow and returns to the seat by spring force when flow rate decreases or reverses. This category includes wafer and flanged designs such as ARI CHECKO D, Gestra RK, AWS, Genebre, Brandoni W6, Mei DCEL, and Cla-Val 580.

Valve selection should be based on the process medium, flow rate, allowable pressure drop, cracking pressure, installation position, operating temperature, design pressure, seat material, and the risk of hydraulic shock. Spring-assisted closure provides faster shut-off than conventional swing check arrangements and can reduce slam effects in pump stations, HVAC circuits, cooling lines, steam systems, and general industrial piping. In steam service, line drainage, seat type compatibility (metal or soft seat), seat leakage class, and horizontal or vertical installation constraints should be checked.

Available configurations include DIN and ANSI pressure classes, with nominal ratings from PN6 to PN160 and Class 125 to 900 depending on the series. End connections are primarily wafer and flanged. Body and trim materials include brass, cast iron, ductile iron, EN-GJS-400-18-LT, 1.0619, 1.4404, 1.4408, ASTM A216 WCB, ASTM A351 CF8M, AISI 316, super duplex, C954 aluminium bronze, PVC, PP, and PVDF. For ARI CHECKO D, published data includes stainless steel body material 1.4408, PN40 rating, metal seating or optional soft seat, and leakage Class C or Class A to DIN EN 12266-1 depending on seat design.

Disc check valve - CHECKO D | ARI Ari-Armaturen - 1

Disc check valve - CHECKO D | ARI

Disc check valve - CHECKO D | ARI
Ari-Armaturen
ARI-CHECKO®-D – Spring-Loaded Disc Check Valve The ARI-CHECKO®-D is a wafer/clamping type spring-loaded disc check valve designed for installation between flanges. Flow lifts the disc; the spring returns it to the closed position when differential pressure drops below the opening pressure, preventing reverse flow without the need for an actuator....
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Disc check valve - RK | Gestra Gestra - 1

Disc check valve - RK | Gestra

Disc check valve - RK | Gestra
Gestra
GESTRA RK – Spring-Loaded Disc Check Valve The GESTRA RK is a wafer-type check valve designed for installation between flanges. The disc opens via differential flow pressure and closes automatically by spring force, without the need for an actuator. With a spring, installation is possible in any orientation; without a spring, use is limited to vertical...
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Gravity Circulation Non-Return Check Valves | Gestra Gestra - 1

Gravity Circulation Non-Return Check Valves | Gestra

Gravity Circulation Non-Return Check Valves | Gestra
Gestra
GESTRA SBO – Check Valve for Gravity Circulation Control The GESTRA SBO 11, SBO 21, and SBO 31 are spring-loaded check valves designed for installation in heating and domestic hot water circulation systems. Their primary function is to prevent unwanted gravity circulation when the pump is off, thereby avoiding undesired thermal flows within the piping...
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Disc check valve DN 15-100 - 930 | AWS AWS - 1

Disc check valve DN 15-100 - 930 | AWS

Disc check valve DN 15-100 - 930 | AWS
AWS
AWS 930 – Spring-Loaded Wafer Check Valve The AWS 930 is a wafer-type disc check valve designed for installation between flanges. The disc opens under differential pressure and closes via a spring mechanism when inlet pressure drops or reverse flow occurs. No actuator is used; closure is automatic by spring force. Technical Data Sizes: DN15–DN100...
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Disc check valve DN 15-100 - 931 | AWS AWS - 1

Disc check valve DN 15-100 - 931 | AWS

Disc check valve DN 15-100 - 931 | AWS
AWS
AWS 931 – Spring-Loaded Disc Check Valve The AWS 931 is a wafer-type spring-loaded disc check valve designed for installation between flanges. The disc opens under differential pressure and closes via a spring mechanism when flow decreases or reverses. No actuator is provided. Intended for use with clean liquids and gases free of solids. Technical Data...
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Disc check valve DN125-200 - 931 | AWS AWS - 1

Disc check valve DN125-200 - 931 | AWS

Disc check valve DN125-200 - 931 | AWS
AWS
AWS 931 DN125–DN200 – Spring-Loaded Disc Check Valve The AWS 931 DN125–DN200 is a wafer-type check valve with a guided disc and return spring, designed for installation between flanges. It is intended to prevent reverse flow in liquid and gas media free of solids. The valve operates automatically via differential pressure; no actuator is used. Technical...
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Disc check valve DN 15-100 - 932 | AWS AWS - 1

Disc check valve DN 15-100 - 932 | AWS

Disc check valve DN 15-100 - 932 | AWS
AWS
AWS 932 DN15–DN100 – Wafer Spring-Loaded Disc Check Valve The AWS 932 is a wafer-type check valve designed for installation between flanges. It features a guided disc and return spring. Operation is automatic: the disc opens when flow force exceeds the closing force and closes upon reverse flow or pump shutdown. No actuator is used. Technical Data Sizes:...
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Disc check valve DN 125-300 - 932 | AWS AWS - 1

Disc check valve DN 125-300 - 932 | AWS

Disc check valve DN 125-300 - 932 | AWS
AWS
AWS 932 DN125–DN300 – Disc-Spring Check Valve The AWS 932 DN125–DN300 is a wafer-type check valve with a spring-loaded disc, designed for installation between flanges. It is suitable for liquid and gas media without solids, where short face-to-face dimensions and automatic closure on reverse flow or pump shutdown are required. No actuator is provided or...
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Disc check valve DN 15-100 - 932-HD | AWS AWS - 1

Disc check valve DN 15-100 - 932-HD | AWS

Disc check valve DN 15-100 - 932-HD | AWS
AWS
AWS 932-HD DN15–DN100 – High-Pressure Wafer Disc Check Valve The AWS 932-HD is a wafer-type spring-loaded disc check valve designed for high-pressure pipelines. It is installed between flanges and operates automatically based on differential fluid pressure; no actuator is required. The 932-HD series covers DN15–DN100 and is rated for operating pressures...
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Disc check valve DN 15-100 - 936 | AWS AWS - 1

Disc check valve DN 15-100 - 936 | AWS

Disc check valve DN 15-100 - 936 | AWS
AWS
AWS 936 DN15–DN100 – Plastic Wafer Disc Check Valve The AWS 936 is a spring-loaded wafer-type disc check valve designed for installation between flanges according to DIN EN 1092-1 B1 PN10. This series is intended for plastic piping systems or low-pressure chemical networks where reverse flow prevention is required without the use of actuators. Materials...
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Disc check valve - W6 | Brandoni Brandoni Valves - 1

Disc check valve - W6 | Brandoni

Disc check valve - W6 | Brandoni
Brandoni Valves
Brandoni W6 – Wafer Type Spring-Loaded Disc Check Valve The Brandoni W6 is a spring-loaded disc check valve designed for installation between flanges. The range includes two main variants: W6.020 with cast iron body and soft seat for HVAC, water treatment/distribution, and pumping stations; and W6.626 with CF8M stainless steel body and metal seat for...
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Non-Return Valves Disc Valve type DCEL | Mei - 1

Non-Return Valves Disc Valve type DCEL | Mei

Non-Return Valves Disc Valve type DCEL | Mei
Mei Valvole
MEI DCEL – Disc-Spring Wafer Check Valve The MEI DCEL is a wafer-type disc check valve designed for installation between flanges. The disc opens under differential flow pressure and is returned to the closed position by a spring when flow decreases or reverses. No actuator is required for operation. Technical Data Type: disc valve, wafer pattern Sizes:...
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Disc check Valve - 580 | Cla-Val Cla-Val - 1

Disc check Valve - 580 | Cla-Val

Disc check Valve - 580 | Cla-Val
Cla-Val
Cla-Val 580 – Silent Wafer Check Valve The Cla-Val Series 580 is a wafer-type check valve featuring a centrally guided, spring-loaded disc. The return spring closes the disc prior to full reverse flow, reducing slam and hydraulic shock in pump discharge lines. No actuator is required. Construction Sizes: 1" to 10" Pressure class: 125/150 or 250/300...
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Axial Check Valves | Cast Flow Cast Flow Valves - 1

Axial Check Valves | Cast Flow

Axial Check Valves | Cast Flow
Cast Flow Valves
Cast Flow Axial Disc Check Valve The Cast Flow Axial Disc Check Valve is designed for axial disc movement with a return spring. Flow remains aligned with the pipeline axis, and the short disc travel enables rapid closure when flow decreases or reverses. This configuration is primarily used to limit reverse flow and mitigate hydraulic shock (water hammer)...
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Nozzle Check Valves | Cast Flow Cast Flow Valves - 1

Nozzle Check Valves | Cast Flow

Nozzle Check Valves | Cast Flow
Cast Flow Valves
Cast Flow Nozzle Check Valve The Cast Flow Nozzle is an axial flow check valve with a short-stroke disc and return spring. The nozzle-type geometry channels flow through a Venturi effect, reducing pressure drop compared to conventional swing or dual plate designs, depending on body size and configuration. Operation is driven by differential pressure; no...
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Disc check valve PN 63 - 2413 | Genebre Genebre - 1

Disc check valve PN 63 - 2413 | Genebre

Disc check valve PN 63 - 2413 | Genebre
Genebre
Genebre 2413 – Disc Check Valve PN63 The Genebre 2413 is a spring-loaded disc check valve with threaded ends, designed to prevent reverse flow in small-diameter industrial piping. Operation is based on differential pressure and spring return; no actuator is required. Suitable for compact installations and auxiliary lines where space is limited. Technical...
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Disc check valve PN 40-100 - PN 25-DN100 - 2415 | Genebre Genebre - 1

Disc check valve PN 40-100 - PN 25-DN100 - 2415 | Genebre

Disc check valve PN 40-100 - PN 25-DN100 - 2415 | Genebre
Genebre
Genebre 2415 – Wafer Type Spring-Loaded Disc Check Valve The Genebre 2415 is a wafer-type spring-loaded disc check valve designed for installation between flanges. The disc opens under differential flow pressure and closes via an AISI 316 spring when flow decreases or reverses. No actuator is required. Construction and Connection Body: Stainless steel...
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Disc check valve PN 63 - 2416 | Genebre Genebre - 1

Disc check valve PN 63 - 2416 | Genebre

Disc check valve PN 63 - 2416 | Genebre
Genebre
Genebre 2416 – Disc Check Valve PN63 The Genebre 2416 is a spring-loaded disc check valve with threaded ends, designed for small to medium diameter pipelines where reverse flow prevention is required without external actuation. Operation is achieved via differential fluid pressure and a return spring; no actuator is used. Suitable for process lines where...
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Disc check valve PN 63 - 2416N | Genebre Genebre - 1

Disc check valve PN 63 - 2416N | Genebre

Disc check valve PN 63 - 2416N | Genebre
Genebre
Genebre 2416N – Disc Check Valve PN63 NPT The Genebre 2416N is a spring-loaded disc check valve with threaded NPT ends per ASME B1.20.1. Designed for auxiliary lines of small diameter, it prevents reverse flow without the need for an actuator. Disc movement is actuated by differential pressure and spring return. Construction Body / cover: stainless CF8M...
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Check valves - "Idrja" - 2435 | Genebre Genebre - 1

Check valves - "Idrja" - 2435 | Genebre

Check valves - "Idrja" - 2435 | Genebre
Genebre
Genebre 2435 IDRJA – Disc Check Valve with Victaulic Ends The Genebre 2435 IDRJA is a spring-loaded, guided disc check valve designed for grooved-end (Victaulic type) piping systems. It is specified for installations requiring backflow prevention in compact piping layouts, where flanged or threaded connections are not feasible. Construction Body,...
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Check valves - "Cromax" check valve "Idrja" - 2440 | Genebre Genebre - 1

Check valves - "Cromax" check valve "Idrja" - 2440 | Genebre

Check valves - "Cromax" check valve "Idrja" - 2440 | Genebre
Genebre
Genebre 2440 CROMAX IDRJA – Disc Check Valve The Genebre 2440 is a guided disc check valve constructed from stainless steel AISI 304 / 1.4301 with threaded ends ISO 228-1. Operation is achieved via differential fluid pressure and a return spring; no actuator is required. Technical Data Nominal pressure: PN16 Maximum working pressure: 16 bar Opening...
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Check valves - "Cromax" check valve "Idrja" - 2445 | Genebre Genebre - 1

Check valves - "Cromax" check valve "Idrja" - 2445 | Genebre

Check valves - "Cromax" check valve "Idrja" - 2445 | Genebre
Genebre
Genebre 2445 CROMAX IDRJA – Stainless Steel Wafer Check Valve The Genebre 2445 is a wafer-type check valve with a guided disc, return spring, and threaded ends per ISO 228-1. Operation is based on differential fluid pressure; no actuator is required. Construction Body, ends, disc: stainless steel 1.4404 / AISI 316L Disc guide: PTFE Spring: AISI 316 Seat:...
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Check valves - "Cromax" check valve "Idrja" - 2445N | Genebre Genebre - 1

Check valves - "Cromax" check valve "Idrja" - 2445N | Genebre

Check valves - "Cromax" check valve "Idrja" - 2445N | Genebre
Genebre
Genebre 2445N CROMAX IDRJA – Stainless Steel NPT Check Valve The Genebre 2445N is a stainless steel wafer check valve with a guided disc and return spring. Operation is based on differential fluid pressure; there is no actuator or external control. The 2445N variant differs from the 2445 by using NPT threads per ASME B1.20.1. Construction Body, ends,...
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Check valve - "Idrja" DIN PN16 flange ends - 2449 | Genebre Genebre - 1

Check valve - "Idrja" DIN PN16 flange ends - 2449 | Genebre

Check valve - "Idrja" DIN PN16 flange ends - 2449 | Genebre
Genebre
Genebre 2449 IDRJA – Flanged Disc Check Valve PN16 The Genebre 2449 is a spring-loaded, guided disc check valve with flanged ends according to EN 1092-1 PN16. Operation is based on differential pressure; there is no actuator or external control signal. Construction Body (upper/lower), flanges, disc, spring, bolts, washers: stainless steel 1.4401 / AISI...
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