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Swing Check Valves

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  • Body/Bonnet: GGG40/50
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  • Stem: SS420/431
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  • Bolts/Nuts: SS304
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  • DISC: GGG40/50 + EPDM Coating
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  • Epoxy Resin coating internal & external, thickness above 300 micron
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  • Flanged acc to BS4504, ISO 7005. Face to Face acc. To BS 5153, DIN 3352
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  • Work pressure: PN10/16; Size range: 1", 1 1/2", 2" to 24"
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Swing check valves Introduction

Swing check valves are normally recommended for water and wastewater systems applications because of the simple construction, low pressure drop across the valve, and field serviceability.


Swing check valves are available in either metal-to-metal seat or resilient seating. Resilient seated swing check valves are usually recommended for wastewater or services where dirt or other particles may be present in the fluid and positive shutoff is required.


Typically a swing check valve operation depends on gravity (weight of disc) and reverse flow. The pivot point of the swing check is outside the periphery of the disc and, the greater the flow velocity and head pressure possibility the greater the valve closing force. To prevent the slamming of the disc and reducing hydraulic shocks external hinge arm is available with either a lever weight or an adjustable spring.

Swing check valves Feature


Product Features:

·         Design acc. to DIN EN 12334

·         Double sided flange connection acc. to DIN EN 1092-2

·         Face to face dimension acc. to DIN EN 558, Series 48 (F6)

·         Metallic or resilient seated With interior shaft leading through the cover and with outside lever and weight

·         Low wear and low resistance flap bearing

 MATERIALS (BASIC VERSION) :

·         Body, flap disc and cover made of ductile cast iron EN-GJS-400-15 (GGG-40)

·         Shaft made of stainless steel 1.4021

·         Seat in the body and on the flap in metallic sealing version made of brass or chromium steel

·         Seat in the body made of brass or chromium steel and of EPDM or NBR on the flap disc in resilient seated version

·         Bolts and nuts of stainless steel SS304

·         Corrosion protection by means of fusion bonded epoxy powder coating RAL 5015 (average dry film thickness 250μm)

 



Swing check valves Specification 

MaterialA351 CF8M/CF8/CF3, A216 WCB, A352 LCB/LCC
Size1/2''~12'' ( DN15~DN300)
CertificateCE API
PortFull Port
Working Pressure1.0~6.4Mpa
Connection Endsflange
Working Temp. -40ºC~300ºC
Suitable MediumWater, Steam, Oil and some corrosive liquid etc. 
SealPTFE, RPTFE, PPL
Type of connectionBW RTJ RF ETC.
Inspection & TestingAPI598;API-6D


-Manuals

Swing check valves

-Data sheet


Swing check valves Application


Swing check valves have many uses, from sewage systems and wastewater treatment to firefighting, power plants, and various household items. One of the most commonly known examples of this valve type is the swing check valve that allows water to enter a toilet’s tank while blocking the reverse flow.


A swing check valve is a simple device designed for the one-way flow of a liquid or gas. It has a disc that swings on a hinge, opening to allow fluid to flow in, then closing to prevent backflow. Swing check valves are designed in a variety of sizes with different features to suit specific application types. There are also some slight variations on the swing design that better suit particular situations.

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