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Adjustable Check Valve


1/4" & 1/2" NPT
3 - 600 Psig

Description

Compact one piece body, adjustable check/relief valves are available in Brass or 316 Stainless Steel. Available in 1/4” and 1/2” NPT with a wide selection of seal materials. Series ACV valves can be ordered factory “preset and locked” in crack pressures up to 600 Psig. All valves are 100% factory tested and available cleaned & packaged for Oxygen service

Features

  • Compact One Piece Body Construction
  • Working Pressures to 3000 Psig (206 bar)
  • Adjustable Cracking Pressures from 3 to 600 Psig (0.2 bar to 41.3 bar)
  • Fully retained O-Ring Seal
  • Full Back Pressure Rating
  • Factory Presetting Available
  • 100% Factory Tested for Leakage, Crack and Reseal Performance

Technical Data

  • Cracking Pressure Ranges:
    • 3 to 20 Psig (0.2 to 1.4 bar)
    • 20 to 65 Psig (1.4 to 4.5 bar)
    • 65 to 175 Psig (4.5 to 12.1 bar)
    • 175 to 350 Psig (12.1 to 24.1 bar)
    • 350 to 600 Psig (24.1 to 41.3 bar)
  • Maximum Pressure: 3000 Psig @ 100°F (206 bar @ 40°C)
  • Temperature Rating: -80°F to 375°F (-62°C to 190°C)

  • (based on seal selection, see ordering information)

Materials of Constructions

Component Valve Body Material
Brass Stainless Steel
Body, Poppet, Seat Locking Screw, Adjustment Screw, Pressure Locking Screw Brass,
ASTM B16
316 SS,
ASTM A479
Spring 302 SS, ASTM A313
O-Ring Seal1 Buna-N VitonTM
1 Lubricated with KrytoxTM

Dimensions

ACV Dimensional Data


Model Code Connection
Inlet & Outlet
Dimensions
A HeX Cv
ACV-4P 1/4" Male NPT 1.62" 9/16" 0.35
ACV-4FF 1/4" Female NPT 2.98" 3/4"
ACV-8P 1/2" Male NPT 2.56" 7/8" 1.20
Flow tested in accordance with ISA S75.21 with air. Restrictions in the inlet or outlet piping may reduce flow. NPT Threads per ASME B1.20.1.        


Ordering Information

ACV Ordering Information


PROPER COMPONENT SELECTION - When specifying a component, the total system design must be considered to ensure safe and trouble-free performance. Intended component function, materials compatibility, pressure ratings, installation, environment and maintenance are the responsibility of the system designer.