Product specifications

19
RELAY VALVES - HALDEX
SERVICE EMERG.AUX
PART NO.INLET INLET DELIVERY RES.RES.
KN30200* 3/8
" 3/8" 3/8" (1) 1/2"
KN30300 1/4" 1/4" 1/4" (1) 3/4"
KN30400 1/4" 1/4" 3/8" (1) 3/4"
(1)=Plugged
* = non-charging
RESERVOIR DELIVERY
PART NO. ABCDINCLUDED WITH VALVE:
KN28500 3/8" 3/8" 3/8" 3/8" (1)
3
/
8
" PLUG.
KN28510 3/8" 1/2" 3/8" 3/8" (1)
1
/
2
"
,
(1)
3
/
8
" PLUG.
KN28520 1/2" 1/2" 1/2" 1/2" (1)
1
/
2
" PLUG.
EMERGENCY RELAY VALVE
4 port. Suitable for pre-121
trailers, converter dollies, or
exempt trailers.
Crack pressure 3.0 PSI
RELAY VALVES(RG2)
2 Delivery Ports. Compact size.
A fast, low cracking pressure straight
relay for tractor-trailer-truck
applications.
Crack pressures 5.6 +/- 1.0 PSI.
Cover may be rotated without affecting
warranty.
RELAY VALVE
2 & 4 Horizontal Delivery Ports.
A multipurpose, low differential, high capacity,
straight relay. Meets FMVSS-121 timing
requirements. Cover can be rotated without affecting
performance or warranty.
3/8" delivery ports.
1/2" reservoir ports
3/8" control port
2 Delivery Ports 4.6 PSI crack pressure
Part No. KN28060
4 Delivery Ports
7 PSI Crack Pressure
Part No. KN28080
(1)=Plugged
AUX
PART NO.CONTROL DELIVERY SUPPLY SUPPLY
A103600 1/4" 3/8" 3/4" (1)
RELAY VALVE
Four delivery ports facing
down. Cracking pressure
3.0 PSI. Meets or exceeds
MFMVSS-121 requirements.
Cover may be rotated without
affecting warranty.
Built-in anti-compounding two-way
check valve for spring brake control.
Part No. KN28071X
Supply (2): 1/2"
Delivery (2): 1/2"
Control (2): 1/4" and 1/8"
Crack Pressure: 4.0± 1 PSI
Remanufactured Relay Valve -
Two Port - Single Control Line
Used to apply and release
service brakes on tractor or
trailer.
Part No. KN28131X
Part No. KN28140X
Supply (2): 1/2"
Delivery (2): 1/2"
Control (1): 1/4"
Crack Pressure: 4.0± 1 PSI
Remanufactured Fast Air and Balancing
(FAB) Relay Valve
Speedup or fast air relay.
Used on converter dollies and long wheel
base towing trailers to speed the tractor
control signal to the rear trailer(s) service
brakes.Cover may be rotated without
affecting performance or warranty.
Two mounting holes: .34 diameter on
.50" centers.
KN28300X
Supply (2): 1/2"
Delivery (2): 1/2"
Control (1): 3/8"
Crack Pressure: 0 PSI
RG5 - 2 Delivery Port Relay Valve
Used on 2 tank, 3 valve trailer systems and tractor applications.
Compact size.
Made of durable (EGC) Engineering Grade Composite.
All ports are molded-in identification.
Interchangeable with competitive valves.
Corrosion and rust proof.
Crack Pressure: 6.0 PSI
Part No. KN28550
Supply A: 1/2" x 3/8" nipple
installed at factory
Supply B: Plugged
Delivery C: 3/8"
Delivery D: 3/8"
Control Port: 1/4"