The SPF Series Flow Control Valves meter flow of air or oil in one direction and allow free flow in the reverse direction. SPF Series valves are manufactured with a two step needle. Fine metering is accomplished over the initial adjustment turns and nominal metering is provided over the remaining turns. Once the desired flow is selected, a set screw can be tightened to maintain the setting. These valves are available with NPTF ports in 1/8", 1/4", 3/8" and 1/2" sizes.


Valve Specifications:
• Maximum Operating Pressure:  2000 PSI Non-Shock
• Operating Temperature: 0° to 140°F


Component Materials:
• Body Material:  Brass
• Needle:  Stainless Steel
• Poppet:  Stainless Steel
• Poppet Style:  Soft Seal Standard
• Check Retainer:  Stainless Steel
• Seals:  Nitrile (Standard). Fluorocarbon (Optional)
• Knob: Steel with Zinc Plating
• Spring:  Stainless Steel

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SPF Flow Control Valve

SPF Series Flow Control Valves
SPF Flow Control Valve

SPF Series Flow Control Valves
SPF Flow Control Valve

SPF Series Flow Control Valves
SPF Flow Control Valve

SPF Series Flow Control Valves
(A) Inch - Port Size N/A 1/8-27 NPTF N/A 1/4-18 NPTF N/A 3/8-18 NPTF N/A 1/2-14 NPTF
(B) Inch N/A 1.54 N/A 1.79 N/A 2.18 N/A 2.70
(C) Inch N/A 2.00 N/A 2.63 N/A 2.75 N/A 3.44
(D) Inch N/A 0.63 N/A 0.81 N/A 1.00 N/A 1.25
(E) Inch N/A 1.28 N/A 1.66 N/A 1.75 N/A 2.23
(F) Inch N/A 0.75 N/A 0.81 N/A 1.00 N/A 1.19
Flow SCFM at 100 PSIG Inlet N/A 25.4 N/A 55.2 N/A 99.3 N/A 138.0
Cv N/A 0.53 N/A 1.56 N/A 2.27 N/A 5.11
Effective Area Sq. In. N/A 0.018 N/A 0.038 N/A 0.070 N/A 0.096
Manufacturer N/A Parker / Schrader Bellows