Brand
Parker
TradeMark
337 Series
NPT Size (in.)
1/4
Adjusted Flow (SCFM)
28
Free Flow (SCFM)
75
Product Details
These 337 series flow control valves meter flow of air in one direction and allow free flow in the reverse direction. They are manufactured with a fine tapered needle providing precise flow control even at low flow rates. The perimeter of the adjustment knob features numerical micrometer position markings providing a visual indication of the setting. Maximum operating pressure is 250 psi and cracking pressure for return check poppet is 1 to 2 psig. Operating temperature is 0º to 180ºF.
Specifications:
• Body Material: Brass
• Needle: Stainless Steel
• Check seal: Urethane
• Needle seals: Buna N
• Knob: Aluminum
• Spring: Stainless Steel
• Retainer: Zinc-plated Steel
• Set Screw: Steel
Specifications:
• Body Material: Brass
• Needle: Stainless Steel
• Check seal: Urethane
• Needle seals: Buna N
• Knob: Aluminum
• Spring: Stainless Steel
• Retainer: Zinc-plated Steel
• Set Screw: Steel