Ø .250" Pilot Operated Chek

Locking Pin and Chek Valve







CPRA2506005A • Free Flow Reverse

Installation Hole



  • Cracking Pressure (Port C to Port A, Port B at 0 psig) .... is 5 ± 3 psid
  • Minimum Pilot Ratio: (Port A Pressure/Port B Pressure, Port C to 0 psig).... 3:1
  • Piloted Flow Rate: (Port A to Port C) ....... 300 Lohms Maximum
  • Leakage in Checked Direction: (Port A to Port C, Port B at 0 psig)... 1 drop/minute maximum at 5 psid, 1 drop/hour maximum at 1000 - 3000 psid.
  • Pilot Piston Leakage: (Port B to Port A and Port C, Port A and Port C at 0 psig) .... 1 drop/minute maximum at 3000 psid.
  • Maximum working pressure is 3000 psid.
  • Nominal Weight is 5.3 grams
    (Valve performance on MIL-H-83282 at 80°F. 1 drop = 50 µL)
MATERIALS:
PART
MATERIAL
SPECIFICATION
Body
304 Cres
QQ-S-763
Springs
17-7PH Cres
AMS 5678
Poppet
15-5PH Cres
AMS 5659
Pilot Piston
13-8 MO Cres
AMS 5629
Pin
17-4PH Cres
AMS 5643
Piston Seal
Telfon
MS8791/1
Compression Seal
Polyamide - Imide
ASTM D 5204
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 CUTX0503050B
Replacement Pin Part Number CKFA2500005A
Replacement Compression Seal CPRA2500009A
For Installationand Extraction Procedures, Tools and Oversize Spare Parts, follow this link
LEE Part Number
(Port C to Port A)
Cracking Pressure
Min. Pilot
Ratio
(Port A to Port C)
Piloted Lohm Rate
Flow Direction
CPRA2506005A
5 ± 3
3:1
300
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 11/2002 by The Lee Company, USA
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