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Check Valves

8 mm Zero Leak Check Valve

This threadless, cartridge-style, one-way valve is made with an elastomeric seat for improved checked direction leakage performance. The soft seat makes this check valve ideal for pneumatic applications where zero leakage is required or as a fill valve for gas systems. This 8 mm check valve features The Lee Company’s field-proven locking end that provides retention into metal manifolds without the use of threads, O-rings, or sealants. The valve is 100% performance tested.

Key Product Facts
  • Mounting Configuration:Insert - Into Metal
  • Diameter:7.95 mm
  • Lohm Rate:250 Lohms
  • Maximum Working Pressure:400 bar
  • Valve Seat Type:Elastomeric

Product Information

General Performance
Characteristic Specification
Lohm Rate 250 Lohms
Valve Flow Direction Reverse Flow
Cracking Pressure Definition Is the uprun pressure at which the valve will flow more than 300 SCCM of air.
Checked Direction Leakage Zero drops/minute on hydraulic fluid. Verified on air (0.05 SCCM maximum at 150 kPa).
Maximum Working Pressure, Checked Direction 400 Bar
Maximum Working Pressure Differential, Flow Direction 40 Bar
Installation Force Is a function of boss material, installation hole dimensions and boss geometry. See installation procedure for a list of recommened forces per boss material.
Materials
COMPONENT MATERIAL
Body 303 Stainless Steel
Cage 416 Stainless Steel
Pin 416 Stainless Steel
Spring 302 Stainless Steel
Ball 440C Stainless Steel
Seal EPDM or FKM
Other seal materials are available upon request. Please contact your local Lee Sales Engineer for more information.
Flow Curves
Cross Section View
Dimensional View
Installation Hole Details

Part Numbers & Specifications

This table below contains the part numbers and technical specifications for this product. If you have specific questions, need a quote, or would like to request a handbook or drawing, click the red request button in the column on the far right.

Part Numbers & Specifications
Filter Part Numbers
CRACKING PRESSURE
SEAL MATERIAL
PART NUMBER FLOW DIRECTION LOHM RATE
CRACKING PRESSURE
SEAL MATERIAL
INSTALLATION HOLE DRAWING NUMBER APPROXIMATE WEIGHT Request Information
CZRM8001004S Reverse 250 Lohms 4 ± 3 kPa (0.6 ± 0.4 psid) FKM 1INST129893S 2.6 grams Request
CZRM8001007S Reverse 250 Lohms 7 ± 5 kPa (1 ± 0.7 psid) FKM 1INST129893S 2.6 grams Request
CZRM8001014S Reverse 250 Lohms 14 ± 10 kPa (2 ± 1.4 psid) FKM 1INST129893S 2.6 grams Request
CZRM8001040S Reverse 250 Lohms 40 ± 30 kPa (6 ± 4.4 psid) FKM 1INST129893S 2.6 grams Request
CZRM8001069S Reverse 250 Lohms 69 ± 48 kPa (10 ± 7.0 psid) FKM 1INST129893S 2.6 grams Request
CZRM8002004S Reverse 250 Lohms 4 ± 3 kPa (0.6 ± 0.4 psid) EPDM 1INST129893S 2.6 grams Request
CZRM8002007S Reverse 250 Lohms 7 ± 5 kPa (1 ± 0.7 psid) EPDM 1INST129893S 2.6 grams Request
CZRM8002014S Reverse 250 Lohms 14 ± 10 kPa (2 ± 1.4 psid) EPDM 1INST129893S 2.6 grams Request
CZRM8002040S Reverse 250 Lohms 40 ± 30 kPa (6 ± 4.4 psid) EPDM 1INST129893S 2.6 grams Request
CZRM8002069S Reverse 250 Lohms 69 ± 48 kPa (10 ± 7.0 psid) EPDM 1INST129893S 2.6 grams Request
Clear Filters
Other seal materials are available upon request. Please contact your local Lee Sales Engineer for more information.

Installation & Accessories

Installation & Manufacturing Tools
Replacement Parts & Accessories
PART NUMBER DESCRIPTION
CCRT0900150S 8 mm Valve Installation Tool

CAD Envelopes

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Questions?

From plugs to solenoid valves, there’s a vast array of products that The Lee Company can offer. If you’d like to discuss the best solution for your specific application or to learn more about our capabilities, use-cases, or quality standards, contact your local Lee sales engineer.