GRACO 562644 - Mhh Valve Check 1/8fp x 1/4mp cs, 8000 PSI, 1/8-27 NPTF x 1/4-18 NPTF

Trabon Double Ball Check Valve designed for high pressure applications where reverse leakage must be kept to a minimum. Features positive sealing with double ball design for reliable operation in hydraulic systems, air and gas compressor cylinder lubrication applications. Uses stiff bias spring to increase reliability and provide controlled pressure in hydraulic circuits.

Specifications

• Length: 3.0 (76.2) mm (inches)
• Thread: 1/8-27 NPTF x 1/4-18 NPTF
• Max Working Pressure: 8000 PSI (552 bar) maximum operating pressure
• Material: Steel body, SST springs, SST balls
• Hex Size: .75 (19.1) mm (inches)
• Nominal Cracking Pressure: 90 PSI (6.2 bar)
• Max Operating Temp: 400°F (204.5°C)
• Lubricant: Oil and Grease (mineral based and synthetic)

Features

• Double ball design for positive sealing
• High pressure capability up to 8000 PSI
• Stiff bias spring for increased reliability
• Right angle configuration for convenient installation
• Various inlet and outlet sizes and configurations
• Prevents fluid drainage due to gravity

Applications

• High pressure hydraulic systems
• Air and gas compressor cylinder lubrication
• Circuit isolation
• Reverse flow prevention
• Gravity drainage prevention
• Plumbing configurations requiring right angles

Related Parts

• 562647 - Double Ball Check Valve 90 PSI Nominal Cracking Pressure, 1/8” NPT(F) x 1/8” NPT(M), SS Body/Ball, 8000 PSI
• 562649 - Double Ball Check Valve 110 PSI Nominal Cracking Pressure, 1/4” NPT(F) x 1/8” NPT(F), SS, 8000 PSI

Style C configuration with angle design. Application similar to straight body double ball check valves but allows convenient installation in wide variety of plumbing configurations.

Reference Manuals

• L15825EN - F (Page 2)