Ø .250" Lee Chek, Axial Flow with Screen

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 - 3000 psid.
  • Lohm rate at 25 psid and greater is 235 Lohms Maximum.
  • Maximum Working Pressure is 3000 psid.
  • Nominal Weight is 4.5 grams.
(Valve performance on MIL-H-83282 at 80°F. 1 drop = 50 µL)
MATERIALS:
PART
MATERIAL
SPECIFICATION
Body
303 Cres
QQ-S-763C
Pin
303 Cres
QQ-S-763C
Spring
17-7PH Cres
AMS 5678
Ball
440C Cres
AMS 5630
Ball Follower
303 Cres
QQ-S-763C
Spring Seat
303 Cres
QQ-S-763C
Cage
303 Cres
QQ-S-763C
Screen
304L Cres
ASTM A 666
Braze
-
AMS 4774
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 CUTA2500160C
Replacement Pin Part Number CKFA2500003A
For Installation and Extraction Procedures, Tools and Oversize Spare Parts, follow this link
LEE Part Number
Cracking Pressure
Lohm Rate
Screen Hole size (Inches)
Free Flow Direction
CKFA2505005A
5 ± 3
235
0.008
FORWARD
CKFA2505001A
1 ± 0.5
235
0.008
FORWARD
CKRA2505005A
5 ± 3
235
0.008
REVERSE
CKRA2505001A
1 ± 0.5
235
0.008
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 07/2008 by The Lee Company, USA
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