Miniature Forged Needle Valves
These valves are used in a wide variety of industrial and laboratory applications. They offer excellent flow control and both the brass and stainless steel models have Teflon® packing.
- Max. operating pressure:
- brass 3000 psig
- stainless steel 6000 psig
- Monel® 3500 psig
- Operating temperature range: -65° to 100°F
- Flow coefficient(Cv):
- brass 0.048
- stainless steel 0.48
- Monel® 0.24
How To Order
|Brass||Model 316 SS||Monel||Pattern||Connections|
|8111||8121||--||Straight||1/8" NPT male|
|8112||8122||8152||Straight||1/4" NPT male|
Check valves prevent the return flow of gas, thus keeping foreign substances out of lines, regulators, and cylinders located upstream of the valve.
These valves are a spring loaded design with the spring on the high pressure side to protect it from foreign substances. The positive stop prevents over-stressing of the spring by sudden surges of gas pressure. An o-ring at the valve seat provides quick, efficient sealing.
How To Order
|Model||Materials of Construction||Cracking Pressure|
|End Connections||Operating Pressure|
|8410V||Brass body, Viton® o-ring, st. st. spring||~1||1/4" NPT female||3000|
|8410V-5-P4MM||Brass body, Viton® o-ring, st. st. spring||~5||1/4" NPT male||3000|
|8420E||316 st. st., EPR o-ring, st. st. spring||~1||1/4" NPT female||3000|
|8420V||316 st. st., Viton® o-ring, st. st. spring||~1||1/4" NPT female||3000|
|8420V-5-P4MM||316 st. st., Viton® o-ring, st. st. spring||~5||1/4" NPT male||000|
|8450V||Monel®, Viton® o-ring, st. st. spring||~1||1/4" NPT female||3000|
Note: Check valves with other o-ring materials are available.