Graco 1050H User Manual

Installation 

The air exhaust port is 3/4 npt(f). Do not 
restrict the air exhaust port. Excessive exhaust 
restriction can cause erratic pump operation. 

1. Remove the muffler (T) from the pump air 

exhaust port. 

2. Install a grounded air exhaust hose (U) and 

connect the muffler (T) to the other end of 
the hose. The minimum size for the air 
exhaust hose is 3/4 in. (19 mm) ID. If a 
hose longer than 15 ft (4.57 m) is required, 
use a larger diameter hose. Avoid sharp 
bends or kinks in the hose.

3. Place a container at the end of the air 

exhaust line to catch fluid in case a dia-
phragm ruptures. If the diaphragm rup-
tures, the fluid being pumped will exhaust 
with the air.

Key:
A

Air supply line

B

Bleed-type master air valve

C

Air filter/regulator assembly

D

Air inlet

E

Master air valve (for accessories)

T

Muffler

U

Grounded air exhaust hose

V

Container for remote air exhaust

A

B

C

D

E

T

U

V

ti14219b