Swing Check Valves

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)