Check Valves

Valvosider DIN 90° – Angle Piston Check Valve The Valvosider DIN 90° is an angle-type piston check valve designed for installation in piping systems where a 90° change in flow direction is required, combined with backflow prevention. Operation is achieved via differential pressure and a return spring; no actuator or external control signal is required....

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Piston Check Valve 'Y' Type - ASME | Valvosider

Valvosider ASME Y-Type – Piston Check Valve The Valvosider ASME Y-Type is a piston check valve with an inclined Y-pattern body, bolted cover, and return spring. The Y-pattern geometry is specified for industrial lines requiring check function with a straighter flow path compared to conventional lift check valves. Operation is based on differential...

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Piston Check Valve 'Y' Type - DIN | Valvosider

Valvosider DIN Y-Type – Piston Check Valve, Oblique Flow The Valvosider DIN Y-Type is a piston check valve with an angled flow path (Y-pattern). The Y-type geometry reduces flow direction changes inside the body compared to straight or lift check valves, minimizing pressure drop. This design is specified for non-return applications in industrial pipelines...

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Lift Check Valve Pressure Seal 'straight' - ASME | Valvosider

Valvosider ASME Pressure Seal – Straight Lift Check Valve The Valvosider ASME Pressure Seal is a straight-pattern lift check valve designed for high-pressure lines. It features a pressure seal bonnet, lapped disc/seat, and integral seat construction. Disc lift is actuated by differential fluid pressure, with return provided by a spring. No actuator is...

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Lift Check Valve Pressure Seal 'straight' - DIN | Valvosider

Valvosider DIN Pressure Seal – Straight Pattern Piston Lift Check Valve The Valvosider DIN Pressure Seal is a straight-through lift check valve designed for high-pressure lines. It features a pressure seal bonnet, piston/disc lift mechanism, and return spring. Operation is automatic, driven by differential pressure across the valve; no actuator is...

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Lift Check Valve Pressure Seal 'Y' Pattern - ASME | Valvosider

Valvosider ASME Pressure Seal Y-Type Piston Check Valve Y-pattern piston check valve for high-pressure ASME piping systems. The valve features a pressure seal bonnet, lapped disc/seat, and integral seat design. Operation is automatic, utilizing differential pressure and spring return; no actuator is required. Class Ratings / Sizes Class 600: 2"–16", Fig....

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Lift Check Valve Pressure Seal 'Y' Pattern - DIN | Valvosider

Valvosider DIN Pressure Seal Y-Type – Lift Check Valve The Valvosider DIN Pressure Seal Y-Type is a lift check valve with an angled (Y-pattern) body, designed for high-pressure piping systems. The Y-pattern positions the piston at an angle to the pipeline axis, reducing abrupt flow direction changes compared to straight lift check valves. Operation is...

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Tilting Disc Check Valve Pressure Seal - ASME | Valvosider

Valvosider ASME Pressure Seal – Tilting Disc Check Valve The Valvosider ASME Pressure Seal is a tilting disc check valve designed for high-pressure pipelines in accordance with ASME standards. The disc rotates with the flow and closes automatically when the differential pressure decreases or reverses. No actuator is required for operation. Pressure...

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Tilting Disc Check Valve Pressure Seal - DIN | Valvosider

Valvosider DIN Pressure Seal – Tilting Disc Check Valve The Valvosider DIN Pressure Seal is a tilting disc check valve designed for high-pressure piping systems. The disc rotates with flow and closes automatically when the differential pressure drops or reverses. Operation is purely mechanical, with no actuator required. Pressure Classes and Sizes PN100:...

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Check Valve - Piston Type Pressure Seal Bonnet | Fluitek

Fluitek – Piston Check Valve with Pressure Seal Bonnet The Fluitek Pressure Seal Bonnet is a piston check valve designed for high-pressure, high-temperature service, typically found in power generation, steam, and process lines. The valve features a Y-pattern body, with the piston lift axis inclined relative to the flow, enabling lift check operation...

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Swing Check Valve - Bolted Bonnet | Fluitek

Fluitek Bolted Bonnet – Swing Check Valve The Fluitek Bolted Bonnet is a swing check valve with a bolted cover, designed to prevent reverse flow in industrial ANSI pipelines. The disc opens with forward flow and closes automatically when differential pressure decreases or reverses. No actuator is required for operation. Standards and Pressure Classes...

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Swing Check Valve - Piggable Bolted Bonnet | Fluitek

Fluitek Piggable Bolted Bonnet – Swing Check Valve The Fluitek Piggable Bolted Bonnet is a swing check valve designed for pipelines requiring pigging, either for periodic internal cleaning or corrosion inspection. The primary requirement is that the check valve does not obstruct pig passage. Construction is specified as full opening per API 6D, ensuring...

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Swing Check Valve - Pressure Seal Bonnet | Fluitek

Fluitek Pressure Seal Bonnet – Swing Check Valve The Fluitek Pressure Seal Bonnet is a swing check valve designed for high-pressure pipelines, typically installed in conjunction with on/off isolation valves. The disc remains open under flow, requiring minimal flow to maintain the open position. When normal flow ceases, the valve closes to prevent reverse...

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Tilting Disc Check Valve - Bonnetless | Fluitek

Fluitek Bonnetless – Tilting Disc Check Valve The Fluitek Bonnetless is a tilting disc check valve, also referred to as an equilibrated disc check valve. The disc remains open under balanced flow conditions and rotates towards the seat when reverse flow occurs. This design aims to reduce slam compared to conventional swing check valves by utilizing the...

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Tilting Disc Check Valve - Pressure Seal Bonnet | Fluitek

Fluitek Pressure Seal Bonnet – Tilting Disc Check Valve The Fluitek Pressure Seal Bonnet is a tilting disc check valve designed for high-pressure pipelines. Also referred to as an equilibrated disc non-return valve, it is typically installed in series with on/off valves to prevent reverse flow in piping systems during flow interruption. Operation Disc...

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Swing Check Valve - ZRK / ZRKF | AWS

AWS ZRK / ZRKF – Wafer Type Swing Check Valve The AWS ZRK and ZRKF are wafer-type swing check valves designed for installation directly between flanges. The ZRK operates via disc weight, while the ZRKF incorporates a return spring for controlled closure in non-horizontal or dynamic flow conditions. No actuator is used. Technical Data ZRK: DN32–DN1000....

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Swing Check Valve - RSK 920 | AWS

AWS RSK 920 – Plastic Wafer Check Valve The AWS RSK 920 is a wafer-type check valve designed for direct installation between flanges. Constructed from industrial-grade plastics, it is available with or without a return spring. The disc opens when flow force exceeds the disc weight and, if present, the spring force. The valve closes against the seat upon...

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Swing Check Valve - RSK 925.1 | AWS

AWS RSK 925.1 – Plastic Wafer Check Valve (Clapper Type) The AWS RSK 925.1 is a wafer-type check valve with clapper, constructed from PVC-U. It is designed for straightforward water applications, including swimming pools and building services. The valve is installed between flanges and operates via differential fluid pressure, without the need for an...

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Dual Plate Check Valves - 915 | AWS

AWS 915 – Dual Plate Check Valve The AWS 915 is a dual plate check valve designed for installation between flanges. The two plates open when flow force exceeds the spring closing force and close automatically upon pump shutdown or reverse flow. No actuator is required. Technical Data Sizes: DN50–DN900 / 2"–36" Flange compatibility: PN10, PN16, PN25, PN40...

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Dual Plate Check Valves - 916 | AWS

AWS 916 – Dual Plate Retainerless Check Valve The AWS 916 is a dual plate check valve with a retainerless body design, meaning there are no external shaft retention penetrations through the body. This configuration reduces potential external leakage points. The valve is suitable for industrial liquid or gas lines without solid particles. Operation is...

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Disc check valve DN 15-100 - 932 | 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 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