Company ID

SNUFF-BACK DEVICES

Eliminate drooling and dispense faster!

  • Automatic positive “close” by pulling grease back from nozzle tip after dispense
  • Automatic positive “open” by quickly supplying grease to nozzle tip at start of dispense
  • Compensates for swelling or bending hoses and for compressibility of grease volume in delivery tubing or hose
  • Compact for installation near grease application nozzle. Includes mounting screws but can be “inline” mounted.
  • Minimizes or eliminates oozing or drooling of grease from nozzle tip
  • Functions with NLGI #0 through NLGI #2 grease

HOW SNUFF-BACK WORKS
The compressed air-actuated forward piston movement of the snuff-back device quickly decreases the internal volume of the grease delivery plumbing during dispense. Exhausting that compressed air allows an internal spring to reverse the motion of that piston to increase that internal volume immediately after dispense. The quick volume decrease during dispense counteracts the compression of the grease and air and the expansion of the delivery tubing during dispense and causes the dispense to start quickly. The volume increase immediately after dispense counteracts the expansion of the grease and air and the return to size of the delivery tubing after dispense. This causes the dispense to stop quickly and completely and also eliminates or reduces drooling or oozing from the nozzle tip.

INSTALLATION NOTES
The snuff-back device can often be operated with the same 3-way air valve that operates the grease dispenser. If the operating air pressure for the grease dispenser is lower than the snuff-back operating pressure, the snuffback device can be operated by a separate solenoid or air pilot operated 3-way air valve. The snuff-back device should be installed as close as possible to the dispensing nozzle and its grease ports are interchangeable. The snuff-back cylinder should extend as grease is being dispensed, and retract immediately after grease has been dispensed. The snuff-back devices have a needle valves incorporated into their air inlet fitting to control forward piston velocity to eliminate squirting of lower viscosity grease. 3D models are available.

 

Snuff-back Brochure Adobe Logo
Why use a Snuffback? Adobe Logo

SB1006
SB1006
Snuff-back device, panel mountable, 9:1 boost ratio, has .075 cubic inch (1.2 cc)of snuff-back, air operated with 1/4 NPTF inlet and outlet. Air Inlet is 1/4" Tube push-lock. Mounted with two 1/4" SHCS or with 1/4" NPT fittings. This snuff-back device is spring return and requires a 3-way NC air valve for operation.
SB1006 Brochure Adobe Logo


SB1007
SB1007
Snuff-back device, panel and inline mountable, 9:1 boost ratio, has .024 cubic inch (.40 cc) of snuff-back, air operated with 1/4 NPTF inlet and outlet. Air Inlet is 5/32" Tube push-lock and includes needle valve for piston velocity control. Mounted with two 1/4" SHCS or with 1/8" NPT fittings. This snuff-back device is spring return and requires a 3-way NC air valve for operation.
SB1007 Brochure Adobe Logo


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SB1019
Snuff-back device, panel and inline mountable, 36:1 boost ratio, has .006 cubic inch (0.10 cc) of snuff-back, 1/8 NPTF grease inlet and outlet ports.  Air Inlet is 5/32"or 1/4" Tube push-lock and includes needle valve for piston velocity control.  Mounted with two #10" SHCS or with 1/8" NPT fittings.  This snuff-back device is spring return and requires a 3-way NC air valve for operation.