LEE IMH Medical Grade 316L Insert Chek™ Valve – 558 Series

Product catalog summary

Product Overview
The Lee Medical Grade 316L Insert Chek™ Valve is a miniature, threadless, cartridge-style check valve designed for manifold installation. Constructed from 316L stainless steel with a ceramic ball, it offers enhanced compatibility with aggressive fluids. The valve features a metal-to-metal seat for low leakage and consistent cracking pressures, available in both forward and reverse flow versions for design flexibility.

Performance Specifications

Lohm Rate: 250 Lohms
Leakage: 20 sccm/min (max) at 172 kPa (25 psid) on air; 1 Drop/min (max) on water
Maximum Working Pressure: 28 MPa (4,060 psid) in checked direction; 4 MPa (580 psid) in flow direction
Materials: 316L Stainless Steel for body, cage, pin, and spring; Ceramic ball

Design Features

316L Stainless Steel and Ceramic Configuration for compatibility with aggressive fluids
100% Tested to eliminate rework
Available in forward and reverse flow versions for design flexibility

Flow Characteristics
The flow curve provided shows the relationship between pressure drop (∆P) and flow rate for water at 80°F (27°C). The graph illustrates the valve's performance under various pressure conditions.

Installation Instructions
To install, insert the valve into a drilled hole and drive the expander pin flush to within 0.25mm above the valve body. Use a maximum installation force of 625 KgF (1,380 lbs. force). The installation tool can bottom on the insert body without consequence. Lee Installation Tool part number CCRT0900120S is recommended.

Lohm Laws
Lohm is a measure of flow resistance, similar to Ohms in electrical systems. It simplifies hydraulic computations by compensating for discharge coefficients and dimensional tolerances. The Lohm system is applicable to various liquids, with formulas provided for volumetric and gravimetric flow units, considering liquid density and viscosity.

Catalog excerpts

LEE IMH Medical Grade 316L Insert Chek™ Valve – 558 Series-1

product data sheet The new Lee Medical Grade 316L Insert Chek™ Valve is a miniature, threadless, cartridge-style check valve specifically designed for installation into manifolds. This new valve is constructed from 316L stainless steel and features a ceramic ball for significantly improved compatibility with aggressive fluids. ■ 316L Stainless Steel and Ceramic Configuration - Compatible with Aggressive Fluids ■ 100% Tested - Eliminates Rework ■ Forward and Reverse Flow Versions - Design Flexibility A high quality metal-to-metal seat provides low leakage and highly repeatable cracking pressures. A robust design and 100% performance testing ensures consistent long term performance. The valves are available in both forward flow and reverse flow versions to provide design flexibility. CHEK VALVE Reverse Flow FLOW DIRECTION Lohm Rate: 250 Lohms1 Leakage: 20 sccm/min. (max.) @ 172 kPa (25 psid) on air 1 Drop/min. (max.) on water Maximum Working Pressure: 28 MPa (4,060 psid) (Checked Direction) 4 MPa (580 psid) (Flow Direction) Materials: Body, Cage, Pin and Spring are 316L Stainless Steel. Ball is Ceramic. * 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 www.leeimh.com LOA before installation. All dimensions in millimeters, except w

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LEE IMH Medical Grade 316L Insert Chek™ Valve – 558 Series-2

industrial microhydraulics Insert the valve into a drilled installation hole. Drive the expander pin flush to within 0.25 mm (0.010") above flush of the check valve body. Use a maximum installation force of 625 KgF (1,380 lbs. force). The installation tool can bottom on the insert body with no consequence. Lee Installation Tool part number CCRT0900120S is available. LOHM LAWS LOHMS LAWS (liquids) Every engineer will be interested in our simple system of defining the fluid resistance of Lee hydraulic components. Just as the OHM is used in the electrical industry, we find that we can use a liquid...

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