Versa-Matic
®
E1PA 1" Bolted Plastic OM
Suffix Code
Material
A
Acetal
BN
Buna-N, Nitrile
N
Neoprene
ND
Nordel, EPDM
TF
Teflon
FG
Hytrel
XL
XL, Santoprene
VT
Viton
TX
Bonded Teflon
Manifold Bolts
165 in-lbs (18.6 N-m)
Water Chamber Bolts
160 in-lbs (18.1 N-m)
Diaphragm Plates — Rubber
10 ft-lbs (13.6 N-m)
Diaphragm Plates — Teflon
10 ft-lbs (13.6 N-m)
Air Valve Cap Screws
30 in-lbs (3.4 N-m)
Pump Size
Minimum Air
Minimum Suction
Line Size
Line Size
1/2"
1/2"
1/2"
1"
1/2"
1"
1-1/2"
1/2"
1-1/2"
2"
1/2"
2"
3"
3/4"
3"
INSTALLATION, OPERATION AND MAINTENANCE
Installation
The pump should be mounted in a vertical position.
In permanent installations, the pump should be
attached to plant piping using a flexible coupling on
both the intake and discharge connections to reduce
vibration to the pump and piping. To further reduce
vibration, a surge suppressor next to the pump may
be used.
Suction pipe size should be at least the same
diameter as the inlet connection size, even larger if
highly viscous fluid is to be pumped. If suction hose
is used, it must be of a non-collapsible reinforced
type. Discharge piping should be of at least the same
diameter as the discharge connection. It is critical,
especially on the suction side of the pump, that all
fittings and connections are air tight or pumping
efficiency will be reduced and priming will be difficult.
Make certain the air supply line and connections
and compressor are capable of supplying the
required pressure and volume of air to operate
the pump at the desired flow rate. The quality of the
compressed air source should be considered.
Air that is contaminated with moisture and dirt may
result in erratic pump performance and increased
maintenance cost as well as frequent process “down
time” when the pump fails to operate properly.
Pump Operation
The pump is powered by compressed air.
Compressed air is directed to the pump air chamber
by the main air valve. The compressed air is
separated from the fluid by a membrane called a
diaphragm. The diaphragm in turn applies pressure
on the fluid and forces it out of the pump discharge.
While this is occurring, the opposite air chamber
is de-pressurized and exhausted to atmosphere and
fluid is drawn into the pump suction. The cycle again
repeats, thus creating a constant reciprocating action
which maintains flow through the pump. The flow
is always in through the bottom suction connection
and out through the top discharge connection. Since
the air pressure acts directly on the diaphragms, the
pressure applied to the fluid roughly approximates
the air supply pressure supplied to the main air valve.
DISCHARGE PIPING
AODD PUMP
SUCTION PIPING
AIR INLET PIPING
Shut Off
Valve
Shut Off
Valve
Flexible
Connection
Filter
Lubricator
Regulator
Air Exhaust
Muffler
Fluid
Discharge
Flexible
Connection
Shut Off
Valve
Union or Pipe Flange
Connection
Union or Pipe Flange
Connection
Flexible
Connection
Discharge
Pressure
Gauge
Suction
Pressure
Gauge
Recommended Piping Connections
Elastomer Suffix Codes
E1 Bolted Plastic Pump Torque Settings
