GRACO 918512 - Valve, Dispense, Ambient, Snuff Ba, Stainless Steel, 3000 PSI

Ambient Snuff Back Extrude/Streaming Valve designed for streaming most low-to-medium viscosity materials up to 350,000 cps. Features a unique divorced design square body valve that easily mounts to brackets for robotic interfacing, pedestal mounts, and automation fixtures. Double acting air cylinder with spring loaded fail-safe closing and elastomeric nozzle seal for easy maintenance and long life with low abrasive materials.

Specifications

• Flow Rate: up to 350,000 cps
• Thread: 1/2 NPT(F) inlet, 1/8 NPT(F) and 3/4-16 (m) outlet
• Max Working Pressure: 3000 PSI (207 bar; 20.7 MPa) working, 150 PSI (10.4 bar; 1.04 MPa) air inlet
• Material: SST, aluminum, UHMWPE, Viton, Brass, Hytrel
• Temperature: 140°F (60°C)
• Weight: 4 lbs (1.8 kg)
• Dimensions: 6.3 in x 1.75 in x 2 in (160 mm x 44 mm x 51 mm)
• Air Cylinder Ports: (2) 1/8 NPT(F)
• Fail Safe Spring: Yes
• Mounting: (2) 1/4-20 holes
• Voltage: Ambient
• Valve Type: TOF
• Type: Snuff Back
• Maximum Air Input Pressure: 10 bar, 1 MPa (150 PSI)

Features

• Divorced design square body valve for multiple mounting options
• Double acting air cylinder with spring loaded fail-safe closing
• Elastomeric nozzle seal for easy maintenance
• Handles low-to-medium viscosity materials up to 350,000 cps
• Easy mounting to brackets for robotic and automation interfacing
• Includes 1/8 NPT(F) nozzle adapter

Applications

• Streaming adhesives
• Low-to-medium viscosity materials dispensing
• Robotic dispensing applications
• Automated dispensing systems

Compatible Equipment

• Robot wrists
• Pedestal mounts
• Automation fixtures
• 617585 streaming tip adapter and tip
• Valve 244535 - Endure Displacement Valve, 5/8"-18 Male Thread/244910 - Endure Valve w/ Ambient or Temperature Conditioning Manifold - ambient or water conditioned valve

Related Parts

• 244535 - Endure Displacement Valve, 5/8"-18 Male Thread
• 244910 - Endure Valve w/ Ambient or Temperature Conditioning Manifold

Instruction Manual 31054. With addition of streaming tip adapter (617585) and tip, valve is adaptable for streaming applications. This is a soft seat component that is replaced by valve 244535/244910. The valve description mentions it 'Replaces C27340 hard seat and 918512 soft seat snuff-back, if application is under 95°C (200°F).' This is part of the Therm-O-Flow (TOF) valve family. Parts information can be found on page 24 according to the table of contents.

Reference Manuals

• 336833 (Page 109)
• 309376 (Page 3)
• 310538 (Page 2)