PART NO : AB8475                          
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The R-12P relay valve is a special purpose relay designed specifically for use on trailers and converter dollies. This 0 p.s.i. crack and differential relay speeds up brake application signals to provide an equal or balanced pressure signal to all trailer and dolly brakes on double and triple trailer combinations. By maintaining the same application signal across the entire train of trailers this pilot operated relay valve aids in achieving overall vehicle brake balance and stability.

MODEL:
R-12P

SUPPLY PORTS:
1/2" NPT (2)

DELIVERY PORTS:
3/8" NPT (4)

CONTROL PORT:
1/4" NPT

CRACK PRESSURE:
0 PSI

CROSS REFERENCES:
109264, 065476, 109001, 109002, 109264, 109424, 109446, 65476.
A cross reference listing means that this valve is a suitable replacement for the part numbers listed. Some changes in air line plumbing may be required.