Ø .250" High Pressure Chek

Locking Pin and Chek Valve


Forward Flow

Reverse Flow

Installation Hole



  • Cracking Pressure is 5 ± 3 or 1 ± 0.5 psid.
  • Maximum Leakage is 1 drop/minute at 5 psid in the checked direction, 1 drop/hour at 1000 - 8000 psid.
  • Lohm rate at 15 psid and greater is 60 Lohms Maximum.
  • Maximum Working Pressure is 8000 psid.
  • Nominal Weight is 4.1 grams.
(Valve performance on MIL-H-83282 at 80°F. 1 drop = 50 µL)
MATERIALS:
PART
MATERIAL
SPECIFICATION
Body
304 Cres
QQ-S-763
Pin
17-4PH Cres
AMS 5643
Poppet
15-5PH Cres
AMS 5659
Spring
17-7PH Cres
AMS 5678
Spring Seat
304 Cres
QQ-S-763
Finish: All Cres Parts Passivated per QQ-P-35.
Pins are prewaxed. Do not degrease. Do not lubricate.

INSTALLATION AND EXTRACTION
Tool Set Part Number is CUTA2500406C
Replacement Pin Part Number CHFA2500003A
For Installation and Extraction Procedures, Tools and Oversize Spare Parts, follow this link
LEE Part Number
Cracking Pressure
Lohm Rate
Free Flow Direction
CHFA2506505A
5 ± 3
60
FORWARD
CHFA2506501A
1 ± 0.5
60
FORWARD
CHRA2506505A
5 ± 3
60
REVERSE
CHRA2506501A
1 ± 0.5
60
REVERSE
For more information, please send us your application information via our ASK LEE service. Or contact our application engineers in the USA at 1-800-LEE-PLUG or our representatives around the world.
Copyright 12/2002 by The Lee Company, USA
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