Checked orifices are a series arrangement of a precision orifice, a ball check valve and an optional screen. The all metal assemblies are made of brass or stainless steel. Gas or liquid can flow in one direction only, at a rate established by the metering orifice. Reverse pressure differential does not result in reverse flow. Standard sizes are 10-32, 1/8" NPT and 1/4" NPT. Custom requirements will be reviewed for large quantity applications.
Unit of Measure

Material

N/A 303 SS

Nominal Orifice Size

N/A 31

CV

N/A 0.022

Ball Material

N/A 304 SS

Maximum Temperature

N/A 300 ºF

Maximum Operating Pressure

N/A 200 psig

Cracking Pressure

N/A 2 psig

For Sizies

N/A FOR 10-32, 1/8" NPT and 1/4" NPT

Connection A

N/A 10-32 UNF Female

Connection B

N/A 10-32 UNF Female

Screened

N/A Screened

Orifice Diameter

N/A 0.031 in

Outside Diameter

N/A 3/8 in

Total Length

N/A 0.78 in

Air Flow at 25 psig

N/A 30.1 ft³/h

Air Flow at 100 psig

N/A 86.7 ft³/h

Air Flow at Pressure - Standard Cu. Ft. Per Hour (SCFH)

N/A 25 psig: 30.1 100 psig: 86.7

N/A

  • Unidirectional gas or liquid flow
  • Backflow prevention in metering systems
  • Fluid contamination reduction
  • Isolation of fluid sources in mixers
  • Fuel line metering with no reverse flow
  • Medical metering of fluids