Check Valves

Check valves are used to prevent reverse flow automatically in steam, condensate, water, compressed air, oil, hydrocarbon, chemical fluid, and auxiliary process utility systems. Selection should be based on DN, PN or ANSI Class, flow rate, cracking pressure, available differential pressure, pressure loss under steady-state flow, installation position, risk of water hammer, and material compatibility with the process medium.

Piston check valves are applied in lines where controlled closing action and mechanical stability under pressure variation are required. ARI CHECKO V is available in straight-through, angle, and Y-pattern configurations, with flanged or butt-weld ends, in cast iron, ductile iron, carbon steel, and stainless steel 1.4408, with pressure ratings from PN6 to PN40.

Wafer spring-loaded disc check valves are used where short face-to-face length and rapid disc return are required. ARI CHECKO D is specified in stainless steel 1.4408, PN40, for smaller sizes DN15 to DN100, with metal seat or optional soft sealing depending on shut-off and media requirements.

Dual-plate and swing check valves are typically selected for larger diameters and for water distribution, HVAC networks, pump stations, water treatment, and general industrial service. Brandoni D6 is a dual-plate wafer design with body material EN-GJL-250 or ASTM A351 CF8M, PN10/PN16, and EPDM seat. Swing wafer type 06-M6 covers PN6 to PN25, with ASTM A216 WCB or CF8M construction and seat materials including FKM, NBR, or PTFE.

During installation, flow direction, horizontal or vertical orientation, distance from pumps and elbows, pulsating service conditions, and fluid cleanliness must be checked. Maintenance is focused on the seat, disc, spring, hinge, or ball, since wear, fouling, or deposits can lead to internal leakage, noise, chatter, slam, and unintended pressure backflow.

Disc

Piston

Swing

Tilting Disc

Dual Plate

Ball

Foot Check Valves

Duckbill

Piston Check Valve - CHECKO V | ARI

Ari-Armaturen

ARI-CHECKO®-V Piston Check Valve The ARI-CHECKO®-V is a piston-guided, spring-loaded check valve designed to prevent reverse flow in industrial piping systems. The process medium lifts the piston from below; when upstream pressure drops below the opening pressure, the valve closes mechanically. No actuator is required; operation is based on differential...

View

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....

View

Forged Check Valve Class 150/300 - R150/R300 | ICP

ICP Valves

ICP R150RF / R300RF – Forged Piston Check Valve The ICP R150RF / R300RF is a reduced bore forged piston check valve with RF flanged ends per ASME B16.5. Designed for unidirectional flow control in pipelines where mechanical prevention of reverse flow is required without actuator or external control. Available in sizes 1/2"–2" (DN15–DN50), ASME Class 150...

View

Forged Check Valve Class 800 - R800 | ICP

ICP Valves

ICP R150RF / R300RF – Forged Piston Check Valve The ICP R150RF / R300RF is a reduced bore forged piston check valve with RF flanged ends per ASME B16.5. Designed for unidirectional flow control in pipelines requiring mechanical prevention of backflow without actuator or external control. Available in sizes 1/2"–2" (DN15–DN50), ASME Class 150 or Class...

View

Piston Check Valve - 05 | Brandoni

Brandoni Valves

Brandoni Serie 05 – Spring-Loaded Check Valve The Brandoni Serie 05 is a spring-loaded check valve with a body made from grey cast iron EN-GJL-250. It is designed to prevent reverse flow in water distribution, HVAC systems, pump stations, fire protection, compressed air, oils, and hydrocarbons. Not suitable for steam service. Variants and Connections F5...

View

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...

View

Dual plate check valve - D6 | Brandoni

Brandoni Valves

Brandoni D6 – Dual Plate Wafer Check Valve The Brandoni D6 is a dual plate check valve designed for installation between flanges (wafer type). The two plates open under differential flow pressure and are returned by stainless steel springs when flow decreases or reverse pressure occurs. No actuator is required; operation is fully mechanical. Variants...

View

Swing Check Valve - 06-M6 | Brandoni

Brandoni Valves

Brandoni 06-M6 – Wafer Type Swing Check Valve The Brandoni 06-M6 is a wafer swing check valve designed for installation between flanges. The 06 series is supplied without a return spring, while the M6 variant includes a spring for assisted closure, allowing installation in both horizontal and vertical pipe runs, depending on flow direction. Variants and...

View

Ball Check Valve - 07 | Brandoni

Brandoni Valves

Brandoni Serie 07 – Ball Type Check Valve The Brandoni Serie 07 is a ball check valve constructed from spheroidal graphite cast iron (EN-GJS-400-15), designed for liquid networks where viscous or dense fluids may be present. The internal ball is displaced by differential flow pressure and reseats when flow decreases or reverse pressure occurs. No actuator...

View

Swing Check Valve - S6 | Brandoni

Brandoni Valves

Brandoni S6 – Flanged Swing Check Valve The Brandoni S6 is a flanged swing check valve designed for water networks, HVAC systems, water treatment, agricultural, and industrial process applications. The disc opens with forward flow and closes automatically when differential pressure decreases or reverses. No actuator is provided; operation is fully...

View

Venturi Check Valves - M16 | Brandoni

Brandoni Valves

Brandoni M16 – Venturi Check Valve The Brandoni Series M16 is a flanged Venturi-type check valve constructed from grey cast iron, designed for water networks, water treatment systems, and general industrial process applications. The Venturi body geometry reduces pressure losses compared to conventional check valve designs. Not suitable for steam or gas...

View

Piston Check Valve Type class 800. Piston type NPT thread ends - 2234N | Genebre

Genebre

Genebre 2234N – Piston Check Valve Class 800 NPT The Genebre 2234N is a forged piston check valve designed for high-pressure pipelines with threaded NPT ends in accordance with ASME B1.20.1. Operation is based on differential fluid pressure and a return spring, with no actuator required. Installation direction is indicated by the flow arrow on the body....

View

Piston Check Valve Type class 800 Piston type and S.W ends - 2234S | Genebre

Genebre

Genebre 2234S – Piston Check Valve Class 800 SW The Genebre 2234S is a forged piston check valve, Class 800, with Socket Weld ends per ANSI B16.11. Designed for high-pressure, small-diameter pipelines where welded connections are preferred over threaded joints for mechanical strength and reduced leakage risk at the ends. Construction Design: EN ISO 15761...

View

Dual plate check valve - 2401 | Genebre

Genebre

Genebre 2401 – Dual Plate Wafer Check Valve The Genebre 2401 is a dual plate wafer check valve designed for installation between flanges. The two plates open under differential flow pressure and are spring-assisted to close when flow decreases or reverses. No actuator is required. Construction Body: Cast iron EN-GJL-250 / GG-25, epoxy coated Plates:...

View

Dual plate check valve - 2402 | Genebre

Genebre

Genebre 2402 – Dual Plate Wafer Check Valve PN25 The Genebre 2402 is a dual plate wafer check valve constructed from stainless steel 1.4408 / CF8M, designed for installation between flanges. The plates open via differential flow pressure and close by AISI 316 springs when flow decreases or reverses. No actuator is required. Construction and Connection...

View

Swing Check Valve PN16 - 2406 | Genebre

Genebre

Genebre 2406 – Wafer Check Valve, PN16 The Genebre 2406 is a single-disc wafer check valve designed for installation between flanges. Operation is automatic, driven by differential pressure and flow direction, without the need for an actuator. The valve is intended to prevent reverse flow in pipelines carrying liquids compatible with stainless steel CF8M...

View

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...

View

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...

View

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...

View

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...

View

Ball Check Valve - 2417 | Genebre

Genebre

Genebre 2417 – Ball Type Check Valve The Genebre 2417 is a ball check valve with threaded ends, designed for unidirectional flow in small-diameter liquid lines. The internal ball is displaced by differential pressure and reseats when flow decreases or reverse pressure occurs. This valve operates without an actuator. Construction Body, cover, and ends:...

View

Swing Check Valve - 2430 | Genebre

Genebre

Genebre 2430 – Swing Check Valve, Threaded Ends The Genebre 2430 is a swing-type check valve with threaded connections, designed to prevent reverse flow in small process lines and auxiliary piping. The disc opens via differential pressure and closes automatically when flow decreases or reverses. No actuator is required. Construction & Connections Body,...

View

Swing Check Valve - 2430N | Genebre

Genebre

Genebre 2430N – NPT Swing Check Valve The Genebre 2430N is a swing-type check valve with threaded NPT ends conforming to ASME B1.20.1, designed to prevent reverse flow in small process lines. The disc opens by differential fluid pressure and closes when flow decreases or reverses. No actuator is required; operation is fully automatic. Construction and...

View

Disc check valve with flanges PN 16 - 2450 | Genebre

Genebre

Genebre 2450 – Flanged Check Disk Valve PN16 The Genebre 2450 is a flanged, disk-type check valve designed to prevent reverse flow in water networks and compatible non-hazardous liquids. Operation is automatic, actuated by differential pressure and flow direction, with no external actuator required. The technical datasheet refers to this model as a...

View

Showing 1-24 of 109 item(s)