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User Guide
Elcometer Media Valves
General Valve (GV)
Mini General Valve (MGV)
Automatic General Valve (AGV)

Before carrying out any replacement or maintenance of any part of theAbrasive Blast Machine (ABM) or any item within the Abrasive Blast
System, please read and understand the User Guide for the Abrasive
Blast Machine.
Failure to follow operating instructions could result in death, serious
injury or damage to equipment.

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CONTENTS
SectionPage

1

Product Overview

en-2

2

Replacing the elcoTOUGH™ Valve Liner

en-3

3

Removing the Media Valve from the ABM

en-4

4

Disassembling & Re-Assembling GV & MGV Valves

en-5

5

Disassembling & Re-Assembling the AGV Automatic
Valve Stem Assembly

en-6

6

Elcometer GV: Drawings & Parts List

en-7

7

Elcometer MGV: Drawings & Parts List

en-11

8

Elcometer AGV: Drawings & Parts List

en-15

For the avoidance of doubt, please refer to the original English language version of this user guide. The mostrecent version is available to download via the blasting section of the Elcometer website,www.elcometer.com/blasting.
Please ensure that all product packaging is disposed of in an environmentally sensitive manner. Consult yourlocal Environmental Authority for further guidance.
is a registered trademark of Elcometer Limited, Edge Lane, Manchester, M43 6BU.
United Kingdom
All other trademarks acknowledged.
© Elcometer Limited 2018-2020. All rights reserved. No part of this document may be reproduced, transmitted,
transcribed, stored (in a retrieval system or otherwise) or translated into any language, in any form or by anymeans (electronic, mechanical, magnetic, optical, manual or otherwise) without the prior written permission of
Elcometer Limited.
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1

PRODUCT OVERVIEW
Before carrying out any replacement or maintenance of any
part of the Abrasive Blast Machine (ABM) or any item within
the Abrasive Blast System, please read and understandthe User Guide for the Abrasive Blast Machine.
Depressurise the ABM, bleed all the air supply lines to the
ABM and disconnect the ABM from the compressor. Failure
to do so could cause serious injury or death.

The Elcometer General Valve (GV), Mini General Valve (MGV) and
Automatic General Valve (AGV) can be incorporated within a dry
Abrasive Blast System (ABM) to control the flow of dry abrasive media
through the valve.
For the GV and MGV media valves, the media flow is manuallycontrolled through the turning of the orange knob anti-clockwise orclockwise which opens and closes the valve respectively.
In addition to controlling the amount of media flowing through thevalve, the AGV media valve automatically closes the media valve, andhence the flow of abrasive media through the media valve, as soon as
the deadman's handle is released.
In this way the AGV prevents media flowing through the valve undergravity and settling at the base of the mixer valve – thereby avoiding
any subsequent slug of abrasive flowing down the blast hose to theblast nozzle as soon as the deadman's handle is closed again.
The indicator scale below the orange knob indicates the valve opening
position (Fully Open: 100%, Fully Closed: “0%”).
The Elcometer GV, MGV & AGV valve opening position – and hence
the media flow rate - can be adjusted either before the ABM ispressurised or whilst the ABM is in use.
Note: If the valve opening is to be adjusted whilst the ABM is in use, for added
safety of all personnel within the blast area, it is recommended that this isundertaken by the Pot Tender and not the abrasive blaster themselves.

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1
PRODUCT OVERVIEW (continued)
The Elcometer GV, MGV and AGV must be used with theelcoTOUGH™ Valve Liner which is designed to protect the valve fromwear. The valve remains at the selected position during operation andcan only be closed manually.
Through use, the elcoTOUGH™ valve liner will wear. To maintain thesame media flow rate through the valve, the valve opening position
may have to be altered as the valve liner wears.
The scale can also be used to indicate when the valve liner has beenworn too thin and therefore should be replaced to prevent damage tothe valve itself. To determine the degree of abrasive wear on theelcoTOUGH™ valve liner, rotate the orange knob until the valve is fully
closed and then read the scale indicator. If the reading is in the red,
replace the valve liner immediately.
2

REPLACING THE elcoTOUGH™ VALVE LINER

Please refer to the Elcometer GV, MGV and AGV drawings in
Section 6, 7 and 8.
The elcoTOUGH™ liner can be replaced without the need to remove
the media valve completely from the ABM. Unless the Elcometer Shut
Off Valve (part number SOV-B) is fitted, either empty the ABM of all
media or, if the ABM is less than half full, carefully tip the ABM on its
back, making sure that no abrasive media flows through the exhaust
port.
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2
3
4
5

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Depressurise the abrasive blast machine, bleed all the air supply
lines to the ABM and disconnect the ABM from the compressor.
If the Elcometer Shut Off Valve (SOV) is fitted, close the SOV.
The SOV is closed when the black handle is at 90° to the SOV
body.
Loosen, but do not remove the top 4 and bottom 4 flange hex
bolts.
Loosen, remove and carefully store the 2 valve bolts andwashers.
Fully loosen, remove and carefully store the top 2 and bottom 2flange bolts from the same side and carefully remove one half ofthe media valve body. Set down on a clean surface.
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7
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9
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3

REPLACING THE elcoTOUGH™ VALVE LINER (continued)
Remove the old elcoTOUGH™ valve liner and fit the new
elcoTOUGH™ valve liner taking care to ensure that the top andbottom of the valve liner fits in between the flange and the top of
the media valve at the top, and in between the media valve andthe mixer T at the bottom.
Replace the media valve half, making sure that the valve liner iscorrectly positioned.
Re-fit and fully tighten the valve bolts then refit the 4 flange bolts.
Fully tighten all 8 flange bolts.
If the Elcometer Shut Off Valve (SOV) is fitted, open the SOV. The
SOV is open when the black handle is in line with the SOV body.
If the ABM has been laid on its back, re-position the ABM in thecorrect upright position.
Refill the ABM with dry abrasive media.
Re-connect the compressed air supply and ensure that allconnections are tight throughout the blast system and that all
safety pins and whip cords are attached correctly.
REMOVING THE MEDIA VALVE FROM THE ABM

Please refer to the Elcometer GV, MGV and AGV drawings in
Section 6, 7 and 8.
1
2

3
4
5

Depressurise the abrasive blast machine, bleed all the air supply
lines to the ABM and disconnect the ABM from the compressor.
If the Elcometer Shut Off Valve (SOV) is fitted, close the SOV.
The SOV is closed when the black handle is at 90° to the SOV
body. If the SOV is not fitted, either empty the ABM of all media
or, if the ABM is less than half full, carefully tip the ABM on its
back, making sure that no abrasive media flows through theexhaust port.
If removing the AGV, disconnect the air supply (red hose) fromthe media valve by unscrewing the coupling from the media valve.
Loosen and remove the bottom 4 flange bolts and gently rest themixer T on the ground.
Holding the media valve to avoid it dropping, loosen and remove
the top 4 flange bolts and remove the media valve.

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DISASSEMBLING & RE-ASSEMBLING GV & MGV VALVES
Please refer to the Elcometer GV and MGV drawings in Section 6
and 7.
To replace the elcoTOUGH™ valve liner, please refer to Section 2 on
page en-3.
12
3

Once the media valve has been removed from the Abrasive Blast
Machine (see Section 3 on page en-4), to remove the valve stem
assembly, loosen and remove the 4 bolts, taking care not to losethe 4 spring washers and nuts.
Attach a spanner to the flats on the valve nut and, using a second
spanner, unscrew the valve plunger and set aside or replace as
required.
Holding onto the orange handwheel assembly, loosen the box
screw.
Note: Once this box screw is removed, all other items can be pulled apart,allowing the nylon washer, rubber o-ring and handwheel assembly to be
removed and / or replaced.

4

When re-assembling the media valve, re-grease the o-ring with agood quality grease.

5

DISASSEMBLING & RE-ASSEMBLING AGV AUTOMATIC
VALVE STEM ASSEMBLY

Please refer to the Elcometer AGV drawings in Section 8.
To replace the elcoTOUGH™ valve liner, please refer to Section 2 on
page en-3.
1

2

en-5

Once the media valve has been removed from the Abrasive Blast
Machine (see Section 3 on page en-4), to remove the automatic
valve stem assembly, loosen and remove the 4 bolts, taking care
not to lose the 4 spring washers.
Unscrew and remove the valve handwheel & shaft from theautomatic valve assembly and set aside. Replace the rubber oring as required.

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DISASSEMBLING & RE-ASSEMBLING AGV AUTOMATIC
VALVE STEM ASSEMBLY (continued)

3

Place the remainder of the automatic valve stem assembly upside
down in a vice, and firmly clamp the assembly using themachined flats located on the sides of the actuator spring
housing.
Using a Rubber Filter Strap Wrench (part number MT30276),
loosen off, but do not remove, the actuator cylinder.
Remove the automatic valve stem assembly from the vice, andcarefully remove the actuator cylinder from the actuator spring
housing.
Remove and / or replace as required the spring and stop ring.
To replace all other items within the assembly, including the pistono-ring, the piston seal, actuator piston and valve plunger attach
one spanner to the piston nut and a second spanner to the valve
plunger, and undo both items at the same time. Replace items as
required.
When re-assembling the media valve, re-grease all the rubber
o-rings and seals with a good quality grease.

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5
6
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ELCOMETER GV: DRAWINGS & PARTS LIST

Part Number

Description

GV-B

Elcometer General Valve (GV) BSP ThreadTechnical Speciﬁcation
Operating Temperature

0ºC to 60ºC (32ºF to 140ºF)

Maximum Working Pressure

15bar (217psi)

Compatible with Models

1440, 1460, 20100, 24200, 24285
20100H, 24200H, 24285H

1

2
3

12

4
5
13
6
7

3

8
14
9
15

4
16

17
10

11

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ELCOMETER GV: DRAWINGS & PARTS LIST (continued)

ELCOMETER GV SPARE PARTS
Item

Part Number

Description

1

MT28557

Elcometer GV Stem Full Assembly

4MT29993

Elcometer GV Housing Body

9

GV-LINER1

elcoTOUGH™ Rubber Valve Liner for 1" General Valve

GV-LINER5

elcoTOUGH™ Rubber Valve Liner for 1" General Valve (x5)

GV-LINER20

elcoTOUGH™ Rubber Valve Liner for 1" General Valve (x20)12MT30166

Elcometer GV Handwheel and Shaft

14

MT30076

Elcometer GV Shaft Housing

16

MT30077

Valve Nut

19

MT30001

Elcometer GV Plunger

ELCOMETER GV SERVICE KITS
Item

Part Number

Description-

MT30049

Elcometer GV Service Kit 1 (contains the items listed below)2-

M8 x 30 Zinc Plated Hex Head Bolt (x4)5-

M8 Steel Spring Washer (x4)6-

M8 Zinc Plated Steel Nut (x4)-

MT30045

Elcometer GV Service Kit 2 (contains the items listed below)

7-

M12 Zinc Plated Steel Nut (x2)8-

M12 Steel Spring Washer (x2)10-M12 Zinc Plated Steel Washer (x2)11-

M12 x 70 Zinc Plated Hex Bolt (x2)

MT30050

Elcometer GV Service Kit 3 (contains the items listed below)

3-

Elcometer GV Indicator Label

13-

O-Ring 3mm Cord x 44.5 ID

15-

M6 Flat Nylon Washer

17-

M12 Steel Spring Washer

18-

M6 x 25 Stainless Steel Hex Socket Cap Screw

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ELCOMETER GV: DRAWINGS & PARTS LIST (continued)

Part Number

Description-

Elcometer General Valve (GV) Pusher Line Full Assembly for

MT30066-1

Elcometer 1440 Abrasive Blast Machines

MT30066-2

Elcometer 1460 Abrasive Blast Machines

MT30066-3

Elcometer 20100 Abrasive Blast Machines

MT30066-4

Elcometer 24200 Abrasive Blast Machines

MT30066-5

Elcometer 24285 Abrasive Blast Machines

All supplied complete with Pusher Line, Mixer T, Elcometer General Valve(GV), Pot Flange, Pot Coupling and Airline AssemblyTechnical Speciﬁcation
Operating Temperature

0ºC to 60ºC (32ºF to 140ºF)

Maximum Working Pressure

15bar (217psi)

7

10 11

9
8
1

6

7

5

2

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ELCOMETER GV: DRAWINGS & PARTS LIST (continued)

ELCOMETER GV PUSHER LINE SPARE PARTS
Item

Part Number

Description

1-

Elcometer GV 1½" Pusher Line Assembly (15bar / 217psi)
complete with Swaged Hose for

MT28609-1

Elcometer 1440 Abrasive Blast Machines

MT28609-3

Elcometer 1460 Abrasive Blast Machines

MT28609-5

Elcometer 20100 Abrasive Blast Machines

MT28609-6

Elcometer 24200 & 24285 Abrasive Blast Machines2

MT29710

1½” 60º Cone Male / Male Adaptor

3

MT28553

1½” Mixer T

4

MT29014

1½” Forged Hex Nipple 3000lb

5MT30002

1½” Pot Claw Coupling

8

GV-B

Elcometer General Valve (GV) - BSP Thread

9

MT28552

1½” to 1” Reducing Nipple Flange Assembly

ELCOMETER GV PUSHER LINE SERVICE KITS
Item

Part Number

Description-

MT30048

Elcometer GV Service Kit 5 (contains the items listed below)

6-

M12 x 40 Zinc Plated Hex Bolt (x4)7-

M12 Zinc Plated Steel Washer (x12)10-M12 x 50 Zinc Plated Hex Bolt (x4)11-

M12 Zinc Plated Steel Nut (x4)www.elcometer.com/blasting

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ELCOMETER MGV: DRAWINGS & PARTS LIST

Part Number

Description

MGV-B

Elcometer Mini General Valve (MGV) BSP ThreadTechnical Speciﬁcation
Operating Temperature

0ºC to 60ºC (32ºF to 140ºF)

Maximum Working Pressure

15bar (217psi)

Compatible with Models

1020

1

11

2
3

12

4
5
13
6
14
7
15
8
2
16

17
9
18

10

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ELCOMETER MGV: DRAWINGS & PARTS LIST (continued)

ELCOMETER MGV SPARE PARTS
Item

Part Number

Description

1

MT28541

Elcometer MGV Stem Full Assembly2

MT30003

Elcometer MGV Housing Body

8

MGV-LINER1

elcoTOUGH™ Rubber Valve Liner for ½" Mini General Valve

MGV-LINER5

elcoTOUGH™ Rubber Valve Liner for ½" Mini General Valve (x5)

MGV-LINER20 elcoTOUGH™ Rubber Valve Liner for ½" Mini General Valve (x20)11MT30167

Elcometer MGV Handwheel and Shaft

13

MT30076

Elcometer MGV Shaft Housing

16

MT30077

Valve Nut

19

MT30005

Elcometer MGV Plunger

ELCOMETER MGV SERVICE KITS
Item

Part Number

Description-

MT30049

Elcometer MGV Service Kit 1 (contains the items listed below)

3-

M8 x 30 Zinc Plated Hex Head Bolt (x4)4-

M8 Steel Spring Washer (x4)5-

M8 Zinc Plated Steel Nut (x4)-

MT30046

Elcometer MGV Service Kit 2 (contains the items listed below)

6-

M12 Zinc Plated Steel Nut (x2)7-

M12 Steel Spring Washer (x2)9-M12 Zinc Plated Steel Washer (x2)

10-M12 x 50 Zinc Plated Hex Bolt (x2)

MT30051

Elcometer MGV Service Kit 3 (contains the items listed below)

12-

O-Ring 3mm Cord x 44.5 ID

14-

Elcometer MGV Indicator Label

15-

M6 Flat Nylon Washer

17-

M12 Steel Spring Washer

18-

M6 x 25 Stainless Steel Hex Socket Cap Screw

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ELCOMETER MGV: DRAWINGS & PARTS LIST (continued)

Part Number

Description

MT30067

Elcometer Mini General Valve (MGV) Pusher Line Full
Assembly for Elcometer 1020 Abrasive Blast Machines

Supplied complete with Pusher Line, Mixer T, Elcometer Mini General Valve(MGV), Pot Flange, Pot Coupling and Airline AssemblyTechnical Speciﬁcation
Operating Temperature

0ºC to 60ºC (32ºF to 140ºF)

Maximum Working Pressure

15bar (217psi)

8
1

9

10

7

6

5

2

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ELCOMETER MGV: DRAWINGS & PARTS LIST (continued)

ELCOMETER MGV PUSHER LINE SPARE PARTS
Item

Part Number

Description

1

MT28608-1

Elcometer MGV ¾" Pusher Line Assembly (15bar / 217psi)
complete with Swaged Hose for Elcometer 1020 Abrasive
Blast Machines2

MT28540¾" to ½" 60º Cone Male / Male Adaptor

3

MT29246½" Flanged Equal T Assembly

4MT29014½" Forged Hex Nipple 3000lb

5MT30090½" Pot Claw Coupling

6

MGV-B

Elcometer Mini General Valve (MGV) - BSP Thread

7

MT28552

1¼" to ½" Reducing Nipple Flange Assembly

ELCOMETER MGV PUSHER LINE SERVICE KITS
Item

Part Number

Description-

MT30052

Elcometer MGV Service Kit 4 (contains the items listed below)

8-

M12 Zinc Plated Steel Washer (x16)9-M12 x 45 Zinc Plated Hex Bolt (x8)10-M12 Zinc Plated Steel Nut (x8)www.elcometer.com/blasting

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ELCOMETER AGV: DRAWINGS & PARTS LIST

Part Number

Description

AGV-B

Elcometer Automatic General
Valve (AGV) - BSP ThreadTechnical Speciﬁcation
Operating Temperature

0ºC to 60ºC (32ºF to 140ºF)

Maximum Working Pressure

15bar (217psi)

Compatible with Models

1440, 1460, 20100, 24200, 24285
20100H, 24200H, 24285H

10

1
2
11
3

12
13

4

5

14

15
6
16
17
7

18
19

6

20
21

22
8
23
9

24
18
25

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ELCOMETER AGV: DRAWINGS & PARTS LIST (continued)

ELCOMETER AGV SPARE PARTS
Item

Part Number

Description

1

GVAGV-KIT

Elcometer AGV Stem Full Assembly(Can also be used to convert an Elcometer GV to an AGV)

6

MT29993

Elcometer AGV Housing Body

7

GV-LINER1

elcoTOUGH™ Rubber Valve Liner for 1" Automatic General Valve

GV-LINER5

elcoTOUGH™ Rubber Valve Liner for 1" Automatic General Valve (x5)

GV-LINER20

elcoTOUGH™ Rubber Valve Liner for 1" Automatic General Valve (x20)

10MT29994

Elcometer AGV Handwheel and Shaft

13

MT29995

Elcometer AGV Actuator Spring Housing

14

MT29996

Elcometer AGV Actuator Spring

19

MT29997

Elcometer AGV Actuator Piston

21

MT29998

Elcometer AGV Actuator Cylinder

23

MT29999

Elcometer AGV Plunger Shaft

25

MT30001

Elcometer AGV Plunger

ELCOMETER AGV SERVICE KITS
Item

Part Number

Description-

MT30044

Elcometer AGV Service Kit 1 (contains the items listed below)

2-

M8 Steel Spring Washer (x4)3-

M8 x 20 Zinc Plated Hex Head Bolt (x4)-

MT30045

Elcometer AGV Service Kit 2 (contains the items listed below)

4-

M12 Zinc Plated Steel Nut (x2)5-

M12 Steel Spring Washer (x2)8-

M12 Zinc Plated Steel Washer (x2)9-

M12 x 70 Zinc Plated Hex Bolt (x2)

MT30047

Elcometer AGV Service Kit 3 (contains the items listed below)

17-

M12 Zinc Plated Steel Nut

18-

M12 Steel Spring Washer (x2)

MT29598

Elcometer AGV Service Kit 4 (contains the items listed below)

11-

O-Ring 3mm Cord x 44.5 ID

12-

Elcometer AGV Indicator Label

15-

Actuator Stop Ring

16-

Piston Seal; OD: 101.6mm, ID: 88.9mm

20-

Piston Seal; OD: 35mm, ID: 25mm

22-

Rod Wiper Seal; 25mm Shaft

24-

O-Ring 2.4mm Cord x 11.6 ID

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ELCOMETER AGV: DRAWINGS & PARTS LIST (continued)

Part Number

Description-

Elcometer Automatic General Valve (AGV) Pusher Line Full
Assembly for

MT30065-1

Elcometer 1440 Abrasive Blast Machines

MT30065-2

Elcometer 1460 Abrasive Blast Machines

MT30065-3

Elcometer 20100 Abrasive Blast Machines

MT30065-4

Elcometer 24200 Abrasive Blast Machines

MT30065-5

Elcometer 24285 Abrasive Blast Machines

All supplied complete with Pusher Line, Mixer T, Elcometer Automatic General
Valve (AGV), Pot Flange, Pot Coupling and Airline AssemblyTechnical Speciﬁcation
Operating Temperature

0ºC to 60ºC (32ºF to 140ºF)

Maximum Working Pressure

15bar (217psi)

13 14

8

12
11

10
9
7

1

8

6

2

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ELCOMETER AGV: DRAWINGS & PARTS LIST (continued)

ELCOMETER AGV PUSHER LINE SPARE PARTS
Item

Part Number

Description

1-

Elcometer AGV 1½" Pusher Line Assembly (15bar / 217psi)
complete with Swaged Hose for

MT28609-1

Elcometer 1440 Abrasive Blast Machines

MT28609-3

Elcometer 1460 Abrasive Blast Machines

MT28609-5

Elcometer 20100 Abrasive Blast Machines

MT28609-6

Elcometer 24200 & 24285 Abrasive Blast Machines

2

MT30086¼" 60º Cone Male / Male Adaptor

3

MT29710

1½" 60º Cone Male / Male Adaptor

4

MT28553

1½" Mixer T

5

MT29014

1½" Forged Hex Nipple 3000lb

6MT30002

1½" Pot Claw Coupling

MT29580-2

Airline Assembly for Elcometer 1440 Abrasive Blast Machines

MT29580-3

Airline Assembly for Elcometer 1460 Abrasive Blast Machines

MT29580-4

Airline Assembly for Elcometer 20100 Abrasive Blast Machines

MT29580-5

Airline Assembly for Elcometer 24200 Abrasive Blast Machines

MT29580-6

Airline Assembly for Elcometer 24285 Abrasive Blast Machines

10

AGV-B

Elcometer Automatic General Valve (AGV) - BSP Thread

11

MT30089¼" Male / Female T Adaptor

12

MT28552

1½" to 1" Reducing Nipple Flange Assembly

9

ELCOMETER AGV PUSHER LINE SERVICE KITS
Item

Part Number

Description-

MT30048

Elcometer AGV Service Kit 5 (contains the items listed below)

7-

M12 x 40 Zinc Plated Hex Bolt (x4)8-

M12 Zinc Plated Steel Washer (x12)13-

M12 x 50 Zinc Plated Hex Bolt (x4)14-

M12 Zinc Plated Steel Nut (x4)www.elcometer.com/blasting

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