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Positive displacement pumps utilize two counter-rotating lobes (driven by a common drive) to push product through. The product fills the space between the lobes and as the lobes rotate, the product is trapped between the rotating lobes and the interior of the pump’s head casing thereby moving the product forward. As the product reaches the discharge side of the pump, a lobe from the other half of the pump perfectly interlocks in the space between the lobes which displaces (positive displacement) the liquid that was between the lobes out of the pump. All increasing efficiency, these types of pumps include rotary, reciprocating, curve, small, vacuum, oil and animation pumps from manufacturers such as Waukesha.
Positive displacement pumps are rated for speed in product per minute (typically ranging from 1 – 300 gallons per minute depending on materials, application and machine configuration) and working pressure or psi. Â They are usually capable operating both clockwise, or counter clockwise – and equipped with a spring loaded internal bypass pressure valve vented cover.
Graco, Model 234015, Bulldog air pump with priming piston displacement, 10:1 ratio set-up rated up to 8 gallons per minute – depending on materials and application. Maximum fluid working pressure: 1000 psi (68.9 bar). Maximum air input pressure: 100 psi (6.9 bar) and can handle viscosity up to 1,000,000 cps. Equipped with stainless steel contract parts, 21" ram plate with a single pneumatic piston ram, 2½"OD / 2" ID Tri-Clamp fluid discharge. Mounted on stainless steel base frame.
OAD: 42" L x 24" W x 72" H
Graco, Model 954165, Bulldog air pump with priming piston displacement, 38:1 ratio set-up rated up to 90 gallons per minute – depending on materials and application. Maximum fluid working pressure: 3,800 psi (262 bar). Maximum air input pressure: 90 psi (6.2 bar) and can handle viscosity up to 250,000 cps. Equipped with stainless steel contact parts, 21" ram plate with single pneumatic piston ram, 2¾" OD 1-1/ 2" ID I-line fluid discharge. Mounted on painted base frame.
OAD: 42" L x 24" W x 61" H
Graco Model 946500 Power-Flo, 10:1 Ratio, stainless steel, drum pump rated up to 8 gallon per minute – depending on materials and application. Viscosity: up to 1,000,000. Maximum pressure rating: up to 1000 psi. (70) Bar, Operating temperature up to 160° F. Equipped with 22" OD drum follower plate, (1) 1" (1) 1-1/4" (2) 1-3/4" OD Threaded NPT air inlet, air control valve with gauge and 2-1/2" OD threaded discharge. Mounted on 34" long x 24" wide stainless steel platform frame.
OAD: 36" L x 30" W x 62" H
Waukesha, Model 220, positive displacement pump with 316 stainless steel contact parts. Rated from 10 to 300 gallons of product per minute – depending on materials, application and machine configuration. 200 psi maximum working pressure and capable operating both clockwise, or counter clockwise. Equipped with 5" OD / 4" ID I-Line style product charge / discharge with 12" ground clearance. Powered by a 15 Hp drive with a 9.9:1 gear ratio for a current rate of 90 gal/min. Mounted on a 58" long x 21" wide stainless steel frame base.
OAD: 70"L x 23"W x 43"H
Waukesha, Model 15, positive displacement pump with 316 stainless steel contact parts. Rated from 1 to 10 gallons of product per minute – depending on materials, application and machine configuration. 200 psi maximum working pressure, temperature range of -40 Deg F to 200 deg f standard and up to 300 deg F with hot clearence rotors / stators and viton seals and capable operating both clockwise, or counter clockwise. Equipped with a 2" OD / 1½" ID Tri-clamp style product charge / discharge with 11" ground clearance. Powered by a 2 Hp drive with a variable speed controller and a 3:1 gear ratio for a maximum current rate of 7.5 gal/min. Mounted on a 45" long x 18" wide stainless steel push cart.
OAD: 45"L x 18"W x 44"H
Waukesha, Model 15, positive displacement pump 316 stainless steel contact parts, rated from 1 to 10 gallons of product per minute – depending on materials, application and machine configuration. 200 psi maximum working pressure, temperature range of -40 Deg F to 200 deg f standard and up to 300 deg F with hot clearence rotors / stators and viton seals and capable operating both clockwise, or counter clockwise. Equipped with a 2" OD / 1½" ID Tri-clamp style product charge / discharge with 11" ground clearance. Powered by 2 Hp drive with a variable speed controller and 3:1 gear ratio for a maximum current rate of 7.5 gal/min. Mounted on a 45" long x 18" wide stainless steel push cart.
Waukesha, Model 15, positive displacement pump with 316 stainless steel contact parts. Rated from 1 to 10 gallons of product per minute – depending on materials, application and machine configuration. 200 psi maximum working pressure and capable operating both clockwise, or counter clockwise. Equipped with a 2" OD / 1½" ID Tri-clamp style product charge / discharge with 11" ground clearance. Powered by a 2 Hp drive with a variable speed controller and a 3:1 gear ratio for a maximum current rate of 7.5 gal/min. Mounted on a 45" long x 18" wide stainless steel push cart.
Murzan Model DUS-50, sanitary, stainless steel, 55 gallon drum unloader. Equipped with Murzan Model PI 50 stainless steel double diaphragm pump and 24" stainless steel follower plate. Oil free air valve, roller conveyor and drum centering section. Capable of handling drums made of metal, plastic or fiber with, or without, liners. Able to handle viscosities up to 150,000 centipoise and solids up to 6". Rate / Speed dependant on materials, application and machine configuration. CIP capable with optional adaptor.
OAD: 52" L x 60" W x 67" H
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