LEE IMH Chek™ Valve – 4.5mm CCPI Series Press-In

Product catalog summary

Introduction
The document introduces the Lee IMH Chek™ Valve, a 4.5mm miniature cartridge-style check valve designed for installation into plastics. It is constructed entirely of stainless steel, ensuring compatibility with various fluids and gases. The valve's compact size allows for space and weight optimization in system designs.

Specifications
- Material: Stainless Steel (Body, Cage, Ball, and Spring)
- Lohm Rate: 250 Lohms
- Leakage: 20 sccm/min (max) at 172 kPa (25 psid) on air; 1 Drop/min (max) on water
- Dimensions: All dimensions are in millimeters unless noted otherwise.

Design Features
- Press-in Design: Allows for simple installation
- Miniature Size: Saves space and weight
- Bidirectional Installation: Provides forward or reverse flow capabilities
- 100% Tested: Ensures consistent long-term performance

Performance and Installation
The valve is designed for easy press-in installation into plastics with sufficient elongation such as Nylon, Polyethylene, Polypropylene, Acetal, and PEEK. It is not suitable for metal installations. The valve can be installed in either direction, offering design flexibility for forward or reverse flow. Specific installation tools are available for each flow orientation.

Flow and Pressure Data
The document provides a detailed flow curve for water at 80°F (27°C) and lists various part numbers with corresponding cracking pressures ranging from 0 kPa to 625 kPa.

Lohm Laws
The document explains the Lohm system, a method for defining fluid resistance in hydraulic components, similar to Ohms in electrical systems. Lohms account for flow resistance, compensating for discharge coefficients and dimensional tolerances.

Liquid Flow Formula
Formulas are provided to extend Lohm laws to various liquids, considering density and viscosity. These formulas are applicable across a wide range of pressure conditions, with a units constant (K) to simplify conversions.

Conclusion
The Lee IMH Chek™ Valve offers a robust, space-saving solution for fluid control in plastic installations, with comprehensive testing and flexible installation options ensuring reliable performance.

Catalog excerpts

LEE IMH Chek™ Valve – 4.5mm CCPI Series Press-In-1

product data sheet The Lee Company’s Industrial Microhydraulics Group (IMH) introduces the newest addition to our line of miniature cartridge-style check valves specifically designed for installation into plastics. The new 4.5 mm Press-In Chek™ Valve features all stainless steel construction, providing compatibility with a wide range of fluids and gases. The valve’s small size allows designers to optimize their systems, saving space and weight. Its unique barbed design provides easy “press-in” installation, ensures retention and prevents any by-pass leakage around the valve. A robust design and 100% performance testing ensures consistent long term performance. ■ Press-in Design - Simple Installation ■ Miniature Size - Allows Designers to Save Space and Weight ■ Bidirectional Installation Provides Forward or Reverse Flow Capabilities - Design Flexibility ■ 100% Tested - Eliminates Rework ACTUAL SIZE m®3 (As Installed) INSTALLATION HOLE All dimensions in millimeters, except where noted. Lohm Rate: 250 Lohms* Leakage: 20 sccm/min. (max.) @ 172 kPa (25 psid) on air 1 Drop/min. (max.) on water Materials: Body, Cage, Ball and Spring are Stainless Steel. * Lohm is a measure of flow resistance. See back page for more information. The Lee Company - IMH Group, 82 Pequot Park, Westbrook, CT 06498 Tel: 860-399-6281 • eMail: [email protected] Fax: Order Entry: 860-399-7058/Technical Info.: 860-399-7037

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LEE IMH Chek™ Valve – 4.5mm CCPI Series Press-In-2

To install, simply press the valve into a plastic installation hole until the valve is flush minimum with the top of the installation hole. The valve can be installed in either direction, providing forward or reverse flow capabilities. Lee installation tools for each flow orientation are available as follows: Installation Tool Part Number: CCRT0055036S for reverse flow orientation installations, Tool Part Number: CCRT0055034S for forward flow orientation installations. t These valves can be pressed directly into plastics that have sufficient elongation such as Nylon, Polyethylene, Polypropylene,...

Open the catalog to page 2