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2  |  Baker Huges

© 2023 Baker Hughes Company. All rights reserved.

Start-up Operation

The Type 30/30A/30S/ Mooney Filter does NOT 

require any special start-up procedures. Start-up 

of the Mooney Filter should be made by qualified 

personnel familiar with high pressure systems and 

pilot operated regulators.
Consult the instruction manual for the valve and 

pilot being used. Some valves and pilots can be 

damaged if not installed and put into operation 

correctly.

Maintenance

Filter element is subject to plugging and must be 

inspected and replaced as necessary. The fre-

quency of inspection and replacement of the filter 

element depends on severity of service conditions 

and the length of time in service.

Figure 2

Disassemby

1. After depressurizing main valve and filter 

unscrew and remove Filter Housing from the 

Filter Body.

2. 

Inspect Filter Element and replace if necessary.

3. 

Remove Filter O-Ring. A paper clip or other 

suitable tool can be used. Inspect for defects 

and replace if necessary.

Assembly

1. 

Lubricate O-ring with parker O-Lube (or equiva

-

lent Petroleum based lubricant) and place back 

in the Filter Body.

2. If the Filter Guide is removed, apply a small 

quantity of Lock- Tight (or equivalent) to the 

threaded area and screw hand tight into Filter 

Body.

3. 

Lubricate the threads of the Filter Housing with 

Lubraplate (or equivalent Petroleum based 

lubricant).

4. 

Place Filter Element in Filter Housing and screw 

Housing into Filter Body snugly (over tightening 

and O-Ring joint will not improve the seal). The 

element will guide itself into place regardless of 

the orientation of the Filter.

Parts List

Before disassembly, make sure the regulator 

and filter have been isolated from the process 

by closing block valves on the inlet and 

outlet sides of the regulator. Safety release 

pressure and process fluid from body and 

pilot system. Failure to properly complete 

these steps may result in personal injury and 

property damage.

Outlet Port #2

Filter Body

Outlet Port #1

O-Ring
Element Guide

Filter Element

Filter Housing

Drain Port

Inlet Port

High Pressure Conversion

Item Description

Material

Part #

Qty.

1

Body

1

Aluminum

301-006-01

Stainless Steel 301-006-02
Steel

301-066-03

2

Housing

1

Aluminum

301-004-01

Stainless Steel 301-004-02
Steel

301-004-03

3

Element 

Guide

Stainless Steel 301-007-01

1

4

Element

Polyethylene

301-005-01

1

5

O-Ring

Nitrile

021-217-01

1

6

Plug

2

Steel

010-017-01

Stainless Steel 010-017-02

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