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Check Valve

Rubber Flap Check Valve

Datasheet

Download datasheet (PDF)

Specifications are indicative. Final specification is confirmed at quotation.

Specifications

Confirmed at quote
End connection
Flanged

Standards

Design & manufacture
DIN 3202-F6, BS 5153, BS EN 12334, EN 16767
Inspection & test
EN-12266-1 Class A
Flange & end dimension
BS 4504
Other standards
EN-1092-2

Configure your variant(manually adjust box on the right if you require a different spec)

End connection

Materials

All available material options per part. Click a pill to set it in the configurator.

Body
Bonnet
Disc
Seat
Stem
Gasket
O-Ring
Bolt
Cover
Disc Reinforcement
Flapper
Internal Coating
Plug
Shaft Pin
Washer

Operating media

Potable waterNeutral liquidsFluids containing suspended solids

Typical applications

  • Water supply and drainage systems (horizontal installation)
  • Pump discharge to prevent backflow and water hammer
  • Bypass pipes on reservoir inlet/outlet to prevent backflow into supply system
  • Main transmission pipelines
  • Irrigation systems
  • Fire fighting
  • Pump stations

Approvals

WRASEN1092-2BS4504DIN3202-F6BS5153BS EN12334EN16767

Features

  • Rubber lining for abrasion resistance
  • 100% flow area, full waterway for low headloss
  • Suitable for horizontal installation
  • One-piece disc, precision moulded EPDM
  • Internal steel reinforcement disc for positive closure
  • Non-slam, non-clogging operation
  • No counterweight required
  • Disc service life rated to 1 million cycles
  • 100% hydraulic testing before delivery
  • Domed cover design
  • Full bore flow area for low head loss and non-clog operation
  • One-piece disc with steel and nylon reinforcement providing 100% drip-tight sealing
  • Disc opens to 45° from seat and swings to 35° open position at 100% flow
  • Drain plug fitted at bottom of body
  • Lifting eyebolts on cover
  • Body and bonnet fusion bonded (bolted cover with gasket seal)
  • WRAS approved EPDM rubber available upon request
  • Performance: DN50: ~0.08 m headloss at ~5 m³/h (approx. V=1 m/s)
  • Performance: DN50: ~3.5 m headloss at ~20 m³/h (approx. V=6 m/s)
  • Performance: DN100: ~0.05 m headloss at ~50 m³/h (approx. V=2 m/s)
  • Performance: DN100: ~1.0 m headloss at ~100 m³/h (approx. V=4-6 m/s)
  • Performance: DN200: ~0.05 m headloss at ~200 m³/h (approx. V=2 m/s)
  • Performance: DN300: ~0.05 m headloss at ~500 m³/h (approx. V=2 m/s)
  • Performance: DN500: ~0.03 m headloss at ~2000 m³/h (approx. V=1 m/s)
  • Performance: DN600: ~1.5 m headloss at ~10000 m³/h (approx. V=6 m/s)
  • Performance: Velocity reference lines shown at 1, 2, 4, and 6 m/s across all sizes DN50 - DN600

Description

A swing check valve utilising an angled seat and a fully encapsulated, resilient rubber flap disc to prevent reverse flow automatically. The disc assembly comprises a steel plate and steel rod substrate reinforced with nylon cloth and covered with rubber, rated for up to 1 million operating cycles. Suitable for horizontal installation in water supply, drainage, and pump-discharge applications.

Selection notes

This check valve is a swing and rubber flap pattern, supplied for flanged installation.

The body is GJS500-7 (GGG50).

Seat and trim options are NBR and EPDM. The seat, not the body, usually sets the temperature and medium limit, so confirm it against the service before ordering.

Stated service media include potable water, neutral liquids and fluids containing suspended solids.

It is catalogued for Water & Wastewater.

Built to DIN3202-F6, BS5153, BS EN12334, EN16767 and EN-12266-1 Class A.

Supplier remarks

  • WRAS approved material for drinking water upon request.
  • The check valve is generally suitable for cleaning media, and should not be used for media with solid particles and high viscosity.

Used in

Water & Wastewater

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