Air Relay Valves

Automann 

Bendix 

Euclid 

FleetSpec 

HD Plus 

Haldex 

Hella 

Meritor 

Precision Rebuilders 

Reyco Granning 

Sealco 

Tectran 

WABCO 

Wheel Monitor 

Williams Controls 

10-1/2 in 

10-35/64 in 

10-5/64 ft 

101 mm 

102 mm 

114 mm 

124 mm 

3 in 

3-1/2 in 

3.98 in 

4-1/2 in 

4.02 in 

4.88 in 

5 in 

5-11/32 in 

5-13/64 in 

5.83 in 

6 in 

6-29/32 in 

6-45/64 in 

61 mm 

7-21/32 in 

7-29/64 in 

8-27/64 ft 

9-1/8 in 

2-Port 

2-Way Circular DIN 

4 Port 

4-Port 

6-Port 

ABS Modulator Valve 

ATR6 

Air Relay Valve 

Emergency 

Full 

Full Function 

ITCM Upgrade 

In Line Style 

Modulating Relay Valve 

Modulator Relay Valve 

R-12 Relay Valve 

R-12DC Style Relay Valve 

R-6 Relay Valve 

R12P 

R8P 

Ratio Relay Emergency Valve 

Relay Emergency Valve 

Relay Valve 

Reman Trailer ABS Valve 

Sealco Style Relay Emergency Valve 

Service Relay Valve 

Traction Relay Valve 

(1) 1/2 in NPT 

(2) 1/2 in NPT 

(2) 3/4 in NPT 

1/2 NPT 

1/2 in 

1/2 in & 3/8 in (1.27 cm & 0.97 cm) 

1/2 in (1.27 cm) 

1/2 in NPT 

1/2 pipe thread 

1/4 in (0.64 cm) 

2 in 

3/4 Pipe Thread 

3/4 in 

3/4 in (1.91 cm) 

3/4 in NPT 

3/4 in with Nipple 

3/4 pipe thread 

3/8 in 

3/8 in (0.97 cm) 

3/8 in with Filter 

3/8 pipe thread 

0.34 in Diameter on 1.5 in Centers 

5 in (for Ford) Flange Spacing 

5/16 in on 1-1/2 in Centers 

5/16 in on 1-1/2 in centers 

Bracket 

Female Reservoir 

Flange 

Frame Bracket 

Freightliner In-Column Mount 

Heavy wall mounting nipple 

Horizontal 

Nipple 

Rear 

Rear axle flange 

Reservoir 

Standard Flange 

Two mounting holes, 0.34 dia on 1.50 in centers 

Two mounting holes, 0.34 in diameter on 1.50 in centers 

Universal Bracket (BEN296010N) 

Universal Bracket Included (BEN102846N) 

Universal Bracket Included (BEN296010N) 

Universal Mounting Bracket 

Valve Body Flange 

4S/2 

AC-574AA 

AR-1 

AR-2 

ATR-1 

ATR-1DC 

ATR-2 

ATR-3 

ATR-6 

BP-R1 

BR-9235 

CR-30 

E-10R 

E-2 

E-3 

E-4 

E-5 

E-6 

E-7 

FAB 

FF-2 

Free 4-port relay core 

HR-1 

Kelsey 

LOV2 

LOV4 

LQ-2 

LQ-4 

LQ-5 

M-30T 

M-32 

M-32QR 

MDILAND 

Mini relay 

Model - Control Line 

R 

R-12 

R-12D 

R-12DC 

R-12P 

R-14 

R-6 

R-8 

R-8P 

R14 

RE-4 

RE-6 

RE-6NC 

RF 

RG-2 

RR-1 

RV-1 

Reporting relay 

Reversing valve 

SEALCO 

SR-4 

SR-5 

SR-7 

SV-1 

SV-3 

SV-4 

TC-7 

WM-101 

WM-111527 

WM-111531 

WM-111542 

WM-147 

WM-147-L1 

WM-292 

10-21/64 ft 

10-51/64 in 

101 mm 

102 mm 

104 mm 

107 mm 

108 mm 

11 in 

11-1/2 ft 

110 mm 

116 mm 

117 mm 

12-29/32 in 

12-51/64 in 

128.8 mm 

138 mm 

14-1/4 in 

16-3/32 in 

3 in 

3-1/2 in 

3.98 in 

4-5/8 in 

4.02 in 

4.25 in 

4.57 in 

4.61 in 

5-1/2 in 

5-13/16 in 

5.11 in 

5.43 in 

6 in 

7 in 

7-11/32 in 

7-21/32 in 

7-35/64 in 

9-1/8 in 

10 ft 

100 mm 

101 mm 

105 mm 

113 mm 

113.8 mm 

118 mm 

120 mm 

121 mm 

13 in 

3-1/4 in 

3-11/16 in 

3-29/32 in 

3-29/64 in 

3-3/32 in 

3-3/64 in 

3-5/8 in 

3-7/8 in 

3.7 in 

3.86 in 

3/32 in (0.23 cm) 

4 7/16 in 

4-1/2 in 

4-19/64 in 

4-5/16 in 

4.45 in 

4.48 in 

4.72 in 

4.76 in 

5-11/32 in 

6-3/4 in 

6-61/64 in 

7-1/8 in 

7-45/64 in 

7-51/64 in 

9 ft 

94 mm 

98 mm 

(1) 1/4 in NPT and (2) 1/2 in NPT 

(2) 1/2 in NPT 

(4) 1/2 in NPT 

(4) 1/2 in. NPT 

(4) 3/8 in NPT 

1/2 NPT 

1/2 NPTF 

1/2 in 

1/2 in (1.27 cm) 

1/4 NPT 

1/4 in (0.64 cm) 

3/8 NPT 

3/8 in 

3/8 in (0.97 cm) 

H= (2) 1/2 in NPT and V= (2) 3/8 in NPT 

M16x1.5 

ABS Brake System 

Air Relay Valve 

Bendix R-12 Style 

Bendix R-12DC Style 

Bendix Style 

Bobtail 

Charging 

Controls air pressure to the brake chambers. During an ABS stop, the modulator valve adjusts air pressure to the brake chamber to control braking and prevent wheel lockup. Compatible with all versions of Meritor WABCO ECUs. 

For use on trailers produced April 1, 1999 or later. For 3M Enhanced Easy Stop or 2M/3M Easy Stop Units. 

For use on trailers produced prior to April 1, 1999. For 3M Enhanced Easy-Stop or 2M/3M Easy-Stop Units. 

Provides air pressure to activate ATC or RSC when needed. 

Provides an alternative to separate valve installation by combining a quick release valve with two ABS modulator valves. This valve package is compatible with C, D and E Version ECUs. 

Provides an alternative to separate valve installation by combining a service brake relay valve with two ABS modulator valves and one ATC valve. For D and E Version ECUs only. 

Provides an alternative to separate valve installation by combining a service brake relay valve with two ABS modulator valves. Compatible with C, D and E Version ECUs. 

R-12 

R-12DC Style 

R-6 

Single 

Standard trailers, turntables, steerables, dollies 

TRS Valve Location - Center Of Tandem Axle, Center Of Tri-Axle 

Trailer 

Trailer, H/D Truck 

Trailer, Heavy-Duty Truck 

Trailers 

Trailers and Dollies 

Tri-Axles - Side-By-Side 

Truck or Tractor 

Truck/Tractor/Bus 

Universal 

Universal Trailer-Pre 121 & Converter Dollies 

Universal Truck & Trailer. 

Universal Truck, Tractor & Trailer. 

Used on 2 Tank, 3 Valve Trailer Systems & Tractor Applications. 

Volvo 

converter dollies, turn-able axles, heavy haulers, and air lift axles equipped with service brake chambers