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4

Make

Model

Control 

(service)

Supply 

(reservoir)

Delivery

Ref. 

Fig.

Comments

Bendix

®

R-1C

(1) 1/4"

(2) 1/2" or (2) 
1/2" & (1) 3/4"

(3) 3/8"

1

Ref. Bendix Cat. Pg. 
03-B-1

Bendix

R-5

(2) 1/4"

(2) 1/2" or (2) 
1/2" & (1) 3/4"

(2) 1/2" & (2) 
3/8"

2

Ref. Bendix Cat. Pg. 
03-B-2

Bendix

R-6

(1) 1/4"

(1) 3/8" or 1/2" 
and/or (1) 3/4"

(4) 3/8"

3

Ref. Bendix Cat. Pg. 
03-B-3

Bendix

R-8

(1) 1/4"

(1) 3/4" or (2) 
3/4"

(2) 1/2" & (1) 
1/4"

4

Ref. Bendix Cat. Pg. 
03-B-4

Bendix

R-12

(1) 1/4"

(1) 1/2"

(4) 1/2"

*

Pc. No. 102277

Bendix

R-10

(2) 1/4"

1/2" or 3/4"

3/8" or 1/2"

5

Ref. Bendix Cat. Pg. 
03-B-4B

Berg

®

12340

(1) 1/4"

(1) 1/2"

(2) 3/8"

*

With Bracket

Berg

12341

(1) 1/4"

(1) 1/2"

(2) 3/8"

*

No Bracket

Berg

12342

(1) 3/8"

(1) 3/8"

(4) 3/8"

6

Triangular Bracket

Berg

12343

(1) 3/8"

(1) 3/8"

(4) 3/8"

6

No Bracket

Berg

12344

(1) 3/8"

(1) 3/4"

(4) 3/8"

6

Side Mount Bracket

Berg

12345

(1) 1/4"

(1) 3/4"

(4) 3/8"

7

Four Delivery Ports

Berg

12346

(1) 1/4"

(1) 3/4"

(2) 3/8"

7

Two Delivery Ports

Kelsey 
Hayes

®

5468

(1) 1/4"

(1) 1/2"

(2) 3/8"

8

Truck / Tractor Relay 
Valve with Bracket

Kelsey 
Hayes

5470

(2) 3/8"

(1) 1/2" (1) 3/4"

(4) 3/8" and 
1/2"

8

Trailer Relay Valve (no 
Bracket)

Midland

®

 

KN-28000

(1) 1/4"

(2) 3/8"

(2) 3/8"

*

Diaphragm Type, 
Mounting Bracket

Midland

KN-28010

(1) 1/4"

(1) 3/8"

(2) 1/4" (1) 
3/8"

9

Triangular Bracket

Midland

KN-28010A (1) 1/4"

(1) 3/8"

(3) 3/8"

9

Triangular Bracket

Midland

KN-28060

(1) 3/8"

(2) 1/2"

(2) 1/2"

10

Mounting Bracket on 
Cover

Midland

KN-28060A (1) 3/8"

(2) 1/2"

(2) 1/2"

10

Mounting Bracket on 
Cover

Midland

KN-28130

(2) 1/4"

(1) 1/2"

(2) 1/2"

11

Frame Rail Mounting

Midland

KN-28240

(1) 1/4"

(2) 1/2"

(2) 1/2"

12

Frame Rail Mounting

Midland

KN-28160

(1) 1/4"

(1) 3/4"

(2) 1/2"

13

Pad or Nipple Mount

Sealco

®

A-1100

(2) 1/4"

(1) 3/8"

(4) 1/4"

14

Truck / Tractor Relay 
Valve

Sealco

9125 Series (2) 1/4"

(2) 1/2"

(2) 3/8" (1) 
1/2"

15

All 9125 Series Valves

Wagner

®

Model RG-2 (1) 1/4"

(2) 3/8" or 1/2"

(2) 3/8" or 
1/2"

16

Includes Parts AE-
78880, 78887, 78889

*Not Illustrated

RELAY VALVE SPECIFICATION CHART

Summary of Contents for R-12V

Page 1: ...ment Relay Valves Kit R 12 Relay Valves R 14 Relay Valves R 12V R 12H R 14V R 14H Kit Contents Item No Description Qty 1 O Ring 1 2 Shim Washer 3 3 Shim Washer 3 4 Shim Washer 3 5 Spring 1 6 Piston Bearing 1 7 O Ring 1 8 O Ring 1 9 O Ring 1 10 Washer 3 Nine shims of three different thicknesses are included in this kit ...

Page 2: ...the electrical system in a manner that safely removes all electrical power from the vehicle Never exceed manufacturer s recommended pressures Never connect or disconnect a hose or line containing pressure it may whip and or cause hazardous airborne dust and dirt particles Wear eye protection Slowly open connections with care and verify that no pressure is present Never remove a component or plug u...

Page 3: ...stem is reverted to a straight service brake system The R 12 and R 14 relay valves are similar in appearance The difference between them is the R 14 incorporates a balance port which provides the added feature of built in anti compounding when the R 14 is used to control the emergency section of the spring brakes Refer to the chart below to select the appropriate R 12 or R 14 relay valve Fig 4 Fig...

Page 4: ...12346 1 1 4 1 3 4 2 3 8 7 Two Delivery Ports Kelsey Hayes 5468 1 1 4 1 1 2 2 3 8 8 Truck Tractor Relay Valve with Bracket Kelsey Hayes 5470 2 3 8 1 1 2 1 3 4 4 3 8 and 1 2 8 Trailer Relay Valve no Bracket Midland KN 28000 1 1 4 2 3 8 2 3 8 Diaphragm Type Mounting Bracket Midland KN 28010 1 1 4 1 3 8 2 1 4 1 3 8 9 Triangular Bracket Midland KN 28010A 1 1 4 1 3 8 3 3 8 9 Triangular Bracket Midland K...

Page 5: ...el nipple Use a Teflon pipe thread sealant on both ends of the nipple to prevent thread damage when removal is necessary 6 Identify and mark all lines to valve as follows A Service port from brake valve or control valve B Supply port from reservoir C Delivery ports from chambers 7 Remove air lines then valve INSTALLATION 8 Install the R 12 or R 14 valve If bracket mounted secure to frame If reserv...

Page 6: ...02 2019 Bendix Commercial Vehicle Systems LLC a member of the Knorr Bremse Group 12 19 All Rights Reserved Log on and Learn from the Best On line training that s available when you are 24 7 365 Visit brake school com ...

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