Swing Type Check Valve

These types of valve (Non Return Valves) are used to stop back flow to the upstream side of the valve. The design of Check Valve (Non Return Valve) is very simple. A hinged door is placed inside the Swing Check Valve body. With the pressure coming upstream the door is held open; when pressure increases on the downstream side, it forces the door to valve close, stopping any back flow.

Mostly all pump discharge line check valves being used. Swing type check valve is performing in vertical and horizontal both line. Lift check valve have have vertical and horizontal both type of design to suit as per line.

Nivz Flanged End, 150# & 300# Check Valves are Swing Check type and the 800# class check valves are Piston Type Lift Check Valves. The piston type valve works up and down providing a strong, firm seal under high pressure conditions.
Nivz all check valves are self actuating type. Nivz Valves & Automation manufacturing & exporterting of variety of Industrial Check Valve (Non Return Valve) to suit various industrial application and requirments.

Our range also cover Steam Jacketed Swing Check Valve, Full Jacketed Non Return Valve for molten sulphur, asphalt, coltar, bitumen etc for any sticky and viscous media.

Nivz make Double Flanged End Swing Type Check Valves - Non Return Valve are Swing type disc and Bolted cover design Construction. The one piece disc body construction is securely fastened to the hinge by means of a lock nut & pin. The Disc is free to rotating type to avoid any other wear. The hinge pin offers excellent wear resistance properties.

Swing Check Non Retrun Valves also can be supplied with Titling disc design, Dash pot arrangement and outside lever & weight design for use where control of the disc is desires. Swing Non Return Valves can be mounted on Horizontol & Vertical both line.

Nivz Valves & Automation also manufacturing P.T.F.E. (PFA / FEP) Lined Ball Type / ”Y” Type & Rubber Lined Flap Type Check Valves for high corrosive application.

We have facility at our works for supplying of valves with 3rd Party Inspection i.e. Bureau Veritas  / BV, TUV, DNV, SGS, IRS, PDIL, LLOYDS, TATA and others on request.

An ISO 9001 certified quality Swing Type Check Valve Manufacturer, NRV, Swing Type Non Return Valve, Exporter, Supplier, Stockist. Duplex Steel, Super Duplex Steel, Alloy 20, Hastelloy C22, C276, Austenitic Stainless Steel Material Check Valve Manufacturers.

Salient Features of Swing Type Non Return Check Valve

• Body & Cover made from high quality casting with liberal sections.
• The castings are precision machined for high performance of valve.
• Bolted Cover design
• Body Seat Ring & Disc machined to close Tolerances providing smooth action and accurate seating.
• Seat Ring sealweld to the body
• Replaceable (Renewable) type Seat Ring & Integral Seat can also available on special request.
• Stellited Hard Face F6 Seat Ring & Disc also supply on requirement.
• All the disc have double lock nut or cotter pin fixed
• In built wear life for long duration of service.