Cole-Parmer Datasheets for Needle Valves

Needle valves are small valves used for flow control in liquid or gas services. The fine threading of the stem and the large seat area allow for precise resistance to flow.
Needle Valves: Learn more

Product Name Notes
• Valves are designed for positive leak tight shut-off and regulation of fluids in process, power, and instrumentation applications • All metal tapered needle stem tip • Differential hardness between...
400 Series Hard Seat
500 Series Soft Seat
Excellent for metering corrosive fluids and gases<emdash>all wetted parts are CTFE and PTFE. Shell and handle are aluminum. Eight turns will fully open or close valves. Maximum pressure is 75...
Maximum pressure is 75 psi; maximum temperature is 200<deg>F (93<deg>C). Wetted parts are body and O-ring made of PTFE and CTFE valve spindle. Choose aluminum (Al) or 316 stainless steel...
Needle Valves
PFA Cv factor is 0.95 from port 1 to port 3; 0.90 from ports 1 or 3 to port 2.
Plug valves are FDA-approved and feature PFA seals and nuts.
PVC and PP valves withstand up to 150 psi; PVDF up to 200 psi. Seats are made of PTFE and O-rings made of Viton<reg>. Pipe thread connections.
These valves feature an analog knob for repeatable flow settings. Brass valves have Buna N O-rings; 316 SS valves have Viton<reg> O-rings.
Use these needle valves to closely regulate a fine flow. You can also use these valves as a throttling device on lines in which rapid or excessive pulsing pressures effect...
When used with fluoropolymer tubing, these valves complete a chemically inert fluid pathway.