Check Valves

model C11, C21, C31

Applicable standards Model C11: API 6D and API 6DSS
Model C21: API 6D, Design according to ASME B16.34 or ASME VIII Div. 1 & 2
Pressure Class Range ANSI Class 150 lbs. to 4500 lbs.
API6A Class 3000 PSI to 20000 PSI
Size Range From 1/2" to 42"
Ends design Flanged (RF/RTJ) - ASME B16.5, ASME B16.47 or MSS SP-44
Compact (Norsok Standard L-005)
Butt-Weld (ASME B16.25) and/or Butt-Weld + Pipe
Hubbed according to client Clamp
Special client's requirements
Body Design Model C11: Single piece
Model C21: Lugged - Wafer - Double Flanged
Bonnet Design Model C11: Bolted bonnet
Seat design Model C11: Renewable or fixed, Soft sealing or Metal to Metal (c/w hardfacing)
Model C21: Integral seat, Metal to Metal sealing
Stem Design Model C21: Retainer or Retainerless
Valve operation Model C11: Lockable disc option available
Available Materials CS, LTCS, SS, Duplex SS, Super Duplex SS, 6Mo, Inconel, Incoloy, Hastelloy, Monel, Titanium
NACE MR0175 according to client request.
Additional Features Double Block and Bleed, Normal of Reverse acting, Graphite or V-Pack stem sealing arrangement
Testing and Certification Testing: Hydrostatic and Pneumatic
API 598 - API 6D
Fire testing: API 6FA, API 607, BS 6755 part 2, ISO 10497
Fugitive Emission Test: ISO 15848 - 1 & 2
PED 2014/68/UE Mod.H
Model C11: Hyperbaric Test for Subsea application