Description

Check valve is a valve that normally allows fluid to flow through it in only one direction.
Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem.
They are installed both on-shore and off-shore, in the cryogenic and water treatment services, in oil & gas and power generation plants.

Design

according to API 6D, BS 1868, ASME B16.34, API 602, ISO 15761 – BS 5352

  • Bolted bonnet and pressure seal design
  • Swing check and piston check
  • Internal hinge pin
  • Full bore api 6d version with optional hydraulic damper

Fire Safe tested API 6FA, API 607

Range of production

BOLTED BONNET

ENDS R.F. – R.T.J. – B.W. – S.W. – NPT
CLASS 150 300 600 900 1500 2500
NPS (up | to) 56″ 48″ 42″ 24″ 24″ 12″
PRESSURE SEAL

ENDS R.F. – R.T.J. – B.W.
CLASS 900 1500 2500
NPS (up | to) 16″ 16″ 16″
TILTING DISC CHECK

ENDS R.F. – R.T.J. – B.W.
CLASS 150 300 600 900 1500 2500
NPS (up | to) 36″ 36″ 36″ 24″ 20″ 20″
DUAL PLATE CHECK

Design according to API 594
• Wafer, lug and flanged type
• Metal to metal and soft seal

ENDS R.F. – R.T.J. – B.W.
CLASS 150 300 600 900 1500 2500
NPS (up | to) 36″ 32″ 24″ 20″ 16″ 12″

All sizes and ratings available on demand.
Optional outside lever and counter-weight.

Construction Materials

Valvometal can manufacture valves with all types of material complying with ASTM & ASME standards and in accordance to customer needs and specifications (NACE standard included).
The main casted and forged materials used are:

BODY AND BONNET
Casted or forged carbon steel, low temperature carbon steel, alloy steel, stainless steel, exotic alloy, etc.

TRIM
Forged or pressed carbon steel, low temperature carbon steel, alloy steel, stainless steel, exotic alloys, etc.

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