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Vent Valves

558 Series Vent Valve

This threadless, cartridge-style valve (also known as a bleeder valve) provides an innovative solution to removing trapped air within a pressurized system to increase system efficiencies while minimizing hydraulic losses. The valve is designed for installation into metal manifolds and uses the field-proven Lee Controlled Expansion Principle to deliver secure retention without the need for threads, O-rings, or sealants. Normally closed, the valve can be customized to allow air admittance if required for thermal management.

Key Product Facts
  • Mounting Configuration:Insert - Into Metal
  • Diameter:5.47 mm
  • Lohm Rate:1100 Lohms max.
  • Maximum Working Pressure:28 MPa

Product Information

General Performance
Characteristic Specification
Lohm Rate 1100 Lohms
Cracking / Opening Pressure Uprun pressure at which the valve will flow more than 50 SCCM of air
Shut-Off Pressure Uprun pressure at which the valve will flow less than 20 SCCM of air
Leakage Vent valves are normally closed. Specials available as normally open versions for air admittance.
Maximum Working Pressure, Checked Direction 280 Bar
Maximum Working Pressure Differential, Flow Direction 40 Bar
Installation Force 625 kgf (max)
Saftey Screen Filter 125 microns
Materials
COMPONENT MATERIAL
Body 303 Stainless Steel
Cage 303 Stainless Steel
Pin 416 or 303 Stainless Steel
Spring 302 Stainless Steel
Ball 440C Stainless Steel
Screen 316 Stainless Steel
Flow Curves
Cross Section Views
Dimensional Views
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
PART NUMBER FLOW DIRECTION CRACKING / OPENING PRESSURE FLOW POINT - MINIMUM FLOW (REF.) FLOW POINT - PRESSURE SHUT-OFF PRESSURE APPROXIMATE WEIGHT INSTALLATION HOLE DRAWING NUMBER Request Information
CCVF5530120S Forward Configuration 10 ± 5 kPa (1.5 ± 0.7 psid) 5 SLPM 60 ± 10 kPa (8.7 ± 1.5 psid) 120 ± 30 kPa (17.4 ± 4.4 psid) 0.87 grams 1INST007226S Request
CCVF5530290S Forward Configuration 50 ± 30 kPa (7.3 ± 4.4 psid) 10 SLPM 200 ± 10 kPa (29.0 ± 1.5 psid) 290 ± 60 kPa (42.1 ± 8.7 psid) 0.88 grams 1INST007226S Request
CCVF5530540S Forward Configuration 100 ± 30 kPa (14.5 ± 4.4 psid) 17 SLPM 400 ± 10 kPa (58.0 ± 1.5 psid) 540 ± 120 kPa (78.3 ± 17.4 psid) 0.88 grams 1INST007226S Request
CCVR5530120S Reverse Configuration 10 ± 5 kPa (1.5 ± 0.7 psid) 5 SLPM 60 ± 10 kPa (8.7 ± 1.5 psid) 120 ± 30 kPa (17.4 ± 4.4 psid) 1.03 grams 1INST002681S Request
CCVR5530290S Reverse Configuration 50 ± 30 kPa (7.3 ± 4.4 psid) 10 SLPM 200 ± 10 kPa (29.0 ± 1.5 psid) 290 ± 60 kPa (42.1 ± 8.7 psid) 1.03 grams 1INST002681S Request
CCVR5530540S Reverse Configuration 100 ± 30 kPa (14.5 ± 4.4 psid) 17 SLPM 400 ± 10 kPa (58.0 ± 1.5 psid) 540 ± 120 kPa (78.3 ± 17.4 psid) 1.03 grams 1INST002681S Request

Installation & Accessories

Installation & Manufacturing Tools
Replacement Parts & Accessories
PART NUMBER DESCRIPTION
CCRT0900120S 558 Series Installation Tool
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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.