Hydronic Air Driven Pumps & Intensifiers
820 Installation, Use and Maintenance Booklet
1-4-2021
Page 7
Starting - Up
Oil pressure can be determined by regulation of the compressed air, bearing in mind
multiplication ratio pre-selected for the pump itself.
The models are:
P820 RATIO 1:5
P820 RATIO 1:10
P820 RATIO 1:20
P820 RATIO 1:30
P820 RATIO 1:40
For instance, when supplied with compressed air at 80 psi, the P820-5 will produce oil
pressure of 80 x ratio, 400 psi. It should be remembered that actual efficiency produced
by the pump is slightly less than given by the above theoretical calculation. This
difference will not be noticed by a hydraulic gauge.
Having connected the compressed air supply at a low pressure, allow the pump to
operate slowly until primed and oil comes through to the oil output port. Now shut off
the air supply to the pump and securely connect the hydraulic circuit. Switch on the air
supply again and allow the pump to run in order to bleed any air out of the hydraulic
circuit.
Pump features:
•
Standard manifolds and subplates are available with various configurations of SAE
threaded ports for output and return as well as D03 interfaces.
•
Optional rotation of the 1/2” NPT air inlet elbow in four positions.
•
The pump itself works automatically and operates by way of an integral valve.
•
The pneumatic drive section has graphite filled seals for minimum friction, no
lubrication requirement and long life.
•
The hydraulic section comprises an alloy steel pump casing, hard chrome plated
piston rod and bronze filled seals.
•
The suction side of the pump is equipped with a spring-loaded check valve. A
spring-loaded outlet ball type check valve is incorporated in the hydraulic piston.