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Installation: 

The Sprague Products gas boosters, with or without accessories, require the following plumbing connection lines:

1) From driving air source to booster air inlet.  

10m filtration

2) From a pre-charge gas source to the booster  

pre-charge inlet. 40m filtration

3) From the booster outlet port to the  

working system.

 Quick Start Up Guide – Boosters

Operation:

Start Up Procedure:

1) Adjust drive air regulator to zero.
2) Close outlet bleed valve. 
3) Slowly open pre-charge shut-off valve  

(or drive air supply valve if single source). 

4) Adjust pre-charge pressure regulator  

to desired pre-charge pressure. 

5) Lock pre-charge pressure regulator. 

6) Open drive air shut-off valve if not  

already open. 

7) Slowly adjust drive air pressure regulator  

until booster starts operating. 

8) Check all connections for leaks. 
9) Continue increasing drive air pressure  

until desired output pressure is reached.

Shut Down Procedure:

1) Close drive air shut-off valve.
2) Close pre-charge shut-off valve.
3) Open outlet bleed valve. For safety  

leave open.

4) Disconnect from work.

Written authorization 

is required prior to 

disassembly of any 

Sprague Product. Failure 

to do so may void 

warranty.

NOTICE

DANGER

No lubricator is needed. 

Do not run high-pressure 
boosters with lubricated 

air. Oil leaking into the 
compression chamber 
could cause an explosion.

DANGER

Remove oil from pre-
charge air (gas) going to 
high-pressure boosters. 
(If shop air is used in a 
high-pressure system an 
explosion could occur.)

DANGER

Pressurized Air or Gas 

can cause severe injury 

or death if misused. 

Failure to use Sprague 

OEM parts can create 

dangerous operating 

conditions, poor pump 

performance and will 

void the warranty.

NOTICE

Single source drive and pre-charge 

– applies to all boosters
Dual ratio PowerStar booster shown

Separate source drive and  
pre-charge

 – applies to all boosters

Single ended PowerStar booster 
shown

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