DESCRIPTION
The Pageboy series SFD15 pneumatic diaphragm pump is a unique, pocket-sized, air operated diaphragm pump that incorporates a stress-free diaphragm to give very high reliability and long life, even when pumping strong acids or powerful solvents
(MEK, acetone, chloroform etc.).

For information on additional air operated diaphragm pump products, click here.

FEATURES
AIR OPERATED-SAFE IN HAZARDOUS AREAS
SELF PRIMING
INCORPORATES STRESS-FREE DIAPHRAGM
   FOR LONG LIFE
STOPS AUTOMATICALLY AGAINST A CLOSED
   DISCHARGE
IDEAL FOR LOW VISCOSITY SOLUTIONS,
   LIGHT OILS AND SOLVENTS
FEW MOVING PARTS

GENERAL
The pump consists of a chamber that is divided into compartments by a diaphragm. One chamber is the pneumatic pressure/vacuum chamber(B). The other is the pump chamber (C).

Compressed air enters through a venturi which reduces pressure in the pressure/vacuum chamber (B) causing the diaphragm to move away from the pump chamber (C). This is the suction stroke. The diaphragm pushes the control rod until the poppet valve (A) closes the air exhaust port. As the air pressure rises in the pressure/vacuum chamber (B) the diaphragm is forced into the pump chamber. This is the delivery stroke, during which the diaphragm pulls the control rod off its seat. This allows air through the venturi causing the suction stroke to be repeated.

The diaphragm is used simply to separate the air from the liquid and thus operates without stress. The result is very high reliability, particularly when compared with other types of diaphragm pumps. The pump is self-priming, has low air consumption and is safe to use in a hazardous area. It stops automatically against a closed valve, maintaining a delivery line pressure equal to the air supply pressure. It starts automatically when the delivery line pressure falls such as when a valve is opened.

The pump is designed for vertical-upward flow and can be mounted by the extended tie-rods supplied.

1 Venturi complete
2 O ring, inner venturi
3 O ring,outer venturi
4 U Seal
5 O Ring
6 Control Rod
7 Poppet
8 O Ring
9 Silencer
10 Body, Air Motor
11 Seal, Diaphragm edge
12 Diaphragm
13 Washer
14 Center Screw
15 Body Block
16 Ball
17 O ring, valve seat
18 O ring, valve seal
19 Housing, valve
20 Stop pin
21 Connector
22 Connector
23 Connector
24 Clamp
25 Backing plate
26 Tie- rod, 105mm
27 Tie-rod, 85mm
28 Tie-rod, 75mm
29 Washer
30 Nut
31 Collar, valve pin

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