Warren Rupp 3" SandPiper Model SA3-A

DLT #:  MC055595
Available for the low price of only $500.00!

Simple Design, Sophisticated Features, Superior Performance

• Handles Abrasives - Low internal velocity ideal for handling slurries.
• Heavy Viscosities - Anything that flows can be moved.  Low shear design ideal for food and sensitive fluids.
• No Seals - No mechanical seals or packing.  Ideal for handling toxic, corrosive, and abrasive fluids.
• Variable Flow - Regulating the air supply provides variable flow from 0 to 260 gpm.
• Run Dry - Conventional pumps experience damage, the diaphragm design does not.
• Self-Priming - Capable of dry priming under many difficult conditions.
• Closed Discharge - Stops pump without damage.  Expensive by-pass systems or pressure relief valves are unnecessary.
• Optional Porting - Top, bottom, or side discharge options to reduce solids handling or entrained gas problems.
• No Motors - No expensive motors or controls required.  Air supply makes pump portable.
• Explosion Proof - Air operation eliminates spark concern from rotating or electrical equipment.

The Principle Behind the Pump

    The flow diagram at right shows how the pumping action of the SandPiper works.  There are two diaphragm chambers: one on each side.  A flexible diaphragm is mounted in each chamber and divides/seals the pumping section from the air driving section.
    As air enters the non-wetted side of the chamber, it moves the diaphragm outward on a discharge/pumping stroke.  This forces the liquid out of the wetted side of the chamber through the check valve, into the manifold, and on through the discharge outlet of the pump.  The two diaphragms are connected by a rod.  As one diaphragm is pushing the liquid out, the diaphragm rod is pulling the diaphragm on the other side of the pump inward on a suction stroke, causing the second chamber to fill with fluid.  At the end of each stroke, an air distribution valve automatically shifts, reversing the entire sequence, filling and pumping from alternate chambers. 
    The outer part of each chamber is fitted with an inlet and outlet check valve, through which the pumped liquid flows.  By using check valves at the discharge of each chamber, the pumped liquid is forced out of the discharge outlet of the manifold rather than back into the other chamber.  Similarly, check valves at the suction inlet end of each chamber prevent the liquid from being forced back out of the intlet of the pump.  Warren Rupp is the only firm to have innovated different types of check valves for handling differnent types of liquids.
    The air-operated diaphragm pump is ideal for vicous and abrasive liquids, or wherever the user would like to avoid mechanical seals or packing. 
    The S Series with flap type check valves is a line-sized solids handling pump with bottom discharge porting arrangement utilizing the natural effect of gravity.  This significantly reduces/eliminates the build-up of solids in the product chambers and avoids diaphragm connecting rod damage associated with other air operated pumps.  The Sanitary SandPiper gently pumps delicate foods and pharmaceuticals through its flap valves with less product degredation than typically associated with rotor and lobes.

S Series With Flap Valve

• Flap type check valve.
• Replaceable valve seats.
• Air distribution system (ESADS).
• Top suction/bottom discharge.
• Optional air bleed/port.
• In-line serviceable.

Flap-Valve SandPiper Models:  Flap Valve SandPiper pumps are recommended whether the liquid being pumped is thin or highly viscous.  Flap-valves also allow passage of suspended near pipe-sized solids without damage to either the solids or the pump.

Model	Pipe Size	gpm	Solids Handling	psi	Weight
SA3-A	3"	0 to 260	pipe size	125	245 lbs

Intake / Discharge Pipe Size	Capacity	Solids-Handling	Heads Up To
3" 125# ASA Bolt On Flange	0 to 260 gallon per minute (0 to 988 liters per minute)	Up to nearly 3" (75mm)	125 psi or 289 ft. of water (8.8 Kg/cm2 or 88 meters)
Performance Curves (SandPiper pumps are designed to be powered only by compressed air) Temperature Limit:  212°F - 100°C MAXIMUM