Designed to dispense viscous materials fed from cartridges or pumps. The 790HPSS-LF Spool Valve is a spool design for a fast “ON/OFF” dispensing action unaffected by material input pressure, and is ideal for material with a viscosity between 5000 to 3,000,000 CPS at pressures of up to 2,500 psi.

The hardened spool slides in Teflon seals and displaces a portion of the material back into the nozzle during shut off, creating an accurate “suck-back”anti-drip action. An oil chamber creates an additional liquid seal that prevents inadvertent moisture from entering the spool mechanism.

The valve is opened by applying air pressure and closed via a return spring (single acting). A port is provided so that the valve may be connected for air closing without the spring (double acting).

All valves are shipped with a luer lock fluid elbow fitting, airline hose with male quick connect, mounting attachment, tip cap end seal, selection of dispensing tips and user guide. Valves are supplied with a 1 Year warranty.

Do not use this valve for reactive adhesives and fluids such as Cyanoacrylates or other low viscosity liquids. For high viscosity materials only.

Part ID: 790HPSS-LF
Materials: 303 Stainless Steel, Teflon
Length: 4.70" (119mm)
Diameter: 1.50" (38mm)
Weight: 1.16lb (726g)
Viscosity Range: 5,000 to 3 Million CPS
Repeatability: ±1.28%
Cycle Rate: Up to 500 cycles/ minute
Flow Rate (water): 39,000 ml / minute @ 100 psi
Min Shot Size: 0.14 cc / ml
Max Fluid Pressure: 2500 psi (172.4 bar)
Activation Pressure: 70 psi (4.8 bar) minimum
Material Inlet: 1/4"
Material Outlet: 1/4"
Mounting: 1.5" (38mm) diameter