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

Double Ball Check Valve designed for high pressure applications where reverse leakage must be kept to a minimum. Features positive sealing with dual ball design that allows fluid flow in one direction while creating similar pressure and action on both balls. The right angle configuration allows convenient installation in a wide variety of plumbing configurations. Ideal for use in air and gas compressor cylinder lubrication and hydraulic systems to isolate parts of circuits and prevent fluid drainage due to gravity.

Additional Specifications

• Length: 3.0 inches (76.2 mm)
• Thread: 1/8-27 NPTF x 1/4-18 NPTF
• Max Working Pressure: 8000 PSI maximum operating, 110 PSI nominal cracking
• Material: Steel body with SST springs and SST balls
• Hex Size: 0.75 inches (19.1 mm)
• Max Temperature: 400°F (204.5°C)
• Style: B - Straight configuration
• Lubricant: Oil and Grease (mineral based and synthetic)

Features

• Double ball design for positive sealing
• High pressure capability up to 8000 PSI
• Prevents reverse leakage
• Stiff bias spring increases reliability
• Controlled pressure in hydraulic circuits
• Various inlet and outlet sizes and configurations

Applications

• Air and gas compressor cylinder lubrication
• Hydraulic systems
• Circuit isolation
• Preventing fluid drainage due to gravity
• High pressure applications requiring reverse flow prevention

Related Parts

• 562649 - Double Ball Check Valve 110 PSI Nominal Cracking Pressure, 1/4” NPT(F) x 1/8” NPT(F), SS, 8000 PSI
• 562644 - Mhh valve Check 1/8fp x 1/4mp cs

Part of Trabon Check Valves family. Style B configuration with straight body design.

Reference Manuals

• L15825EN-F (Page 2)