Product Overview

A2VA-7116-B
Suntec Industries Incorporated - 60 Aberdeen Drive - Glasgow, KY 42141 - USA
Tel : [phone] - Fax : [phone] - Mail : [e-mail] - www.suntecpumps.com
PUMP
IDENTIFICATION
Single stage
Motor speed : 3450 rpm
Strainer capacity : V=3 GPH
Shaft rotation
and nozzle location
(seen from shaft end)
A : clockwise rotation/
right hand nozzle.
A 2 V A 7116 7 B
Identication number
Revision
B : B6-B20 applications
A2VA-7116B - US - Ed. 4 - January 2020
OIL PUMP
The A2VA-7116-B model has a unique circuit that exhibits a dependable cut-off, a high
single pipe lift capacity and automatic two pipe purging.
The pump circuit contains a positive displacement involute gear set and two controlling
valves. This model is specially engineered for B20 use (Viton O-rings and lip seal, special
materials for piston and diaphragm valve).
APPLICATIONS
- Fuel oil #2 and lighter, B6-B20 (blends from 6% up to 20% biodiesel, per ASTM D396).
- One pipe system (two-pipe system possible).
PUMP OPERATING PRINCIPLE
The fuel from the gear set ows across the cone valve causing a pressure differential
sufcient to overcome the spring force of the diaphragm valve. This causes the diaphragm
valve to close and the fuel is then routed to the piston chamber. When the level of this
ow causes the piston chamber pressure to rise above that of the opposing spring force,
the piston opens and ow passes through the nozzle. The piston spring is adjusted such
that a given nozzle pressure can be maintained while any resulting excess fuel is metered
through the seal chamber and then back to the inlet on single pipe, and the tank on two
pipe installation.
Cut-off speed is regulated by adjusting the cone valve to a level which gives the necessary
pressure drop to open the diaphragm valve. This in turn reduces the piston chamber
pressure and the piston shuts off the nozzle.
Installation :
This unit is supplied for 1-pipe operation, without by-pass plug installed. Please verify
before installation.
For one pipe installation, the by-pass plug must not be installed . The fuel which is not
required at the nozzle is then returned back to the inlet.
For two pipe installation, the steel plug of the return port must be removed and the by-
pass plug must be inserted in the return port allowing any fuel not required at the nozzle
to be bypassed back to the tank. The return plug must not be reinstalled.
Bleed :
In one pipe operation, the easy ow bleeder valve must be loosened to bleed the system.
Bleeding in two pipe operation is automatic, but it may be accelerated by loosening the
easy ow bleeder.
Suction
Nozzle pressure
Return
Gear set pressure
Diaphragm valve
Nozzle
port
Pressure
gauge port
From seal
chamber
Return to inlet
To seal
chamber
Easy
ow
bleed
valve
Return port
Inlet port
Cone
valve
By-pass
plug