The SCPP range of positive displacement pumps has been designed for use in a wide range of applications within: Dairy, Food, Beverage, Pharma and Personal Care markets. The highly efficient design is particularly suited to applications that are low in viscosity with medium to high discharge pressures.
Pump Gearbox The SCPP pump with its circumferential piston pump design concept has a cast iron gearbox which provides maximum shaft ridgity. Gear box is powder-coated. Stainless steel gear box is optional on models 006, 015, 018, 030, 045, 060 & 130. One-piece 316L stainless steel shafts are standard on models 006, 015 & 018. High-strength 17-4 PH one-piece shafts are standard on models 030, 045, 060, 130, 220 & 320. Four-way mounting allows horizontal or vertical porting and provides mounting flexibility.
The SCPP in standard specification has pump casing in AISI 316 stainless steel with an internal surface finish of Ra 32/Ra 0.8 complying to 3A standards. Rotors are made of special non-galling alloy and are available as standard with twin-wing form or optionally with single wing for handling large solids. Seal options include single O-ring seal, single mechanical seal, double O-ring seal with flush, or double mechanical seal with flush.
How It Works
SCPP circumferential piston pump construction
The SCPP pump casing is in AISI 316 stainless steel with a Ra 32/Ra 0.8 internal surface finish of that complies with 3-A standards. Made of a non-galling alloy, standard rotors are available with twin-wing form; an optional single-wing rotor for handling large solids is available. Seal options include single O-ring seal, single mechanical seal, double O-ring seal with flush, or double mechanical seal with flush.
Rotor wings (pistons) rotate around the circumference of the channel in the pump casing. This continuously generates a partial vacuum at the suction port as the rotors unmesh, causing fluid to enter the pump. The fluid is transported around the channel by the rotor wings, and is displaced as the rotor wings re-mesh, generating pressure at the discharge port. Direction of flow is reversible.
The deep channels in which the rotors travel provide large voids to minimize shear of solids.
The rotors are made of non-galling alloy, allowing close clearances between rotating and stationary surfaces, which result in lower slip and thus higher efficiency when pumping low viscosity liquids at higher discharge pressures.
The hub of each non-galling rotor rotates in a recess in the pump head to minimize deflection even at high discharge pressures.