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  These EBW air interlock valves were designed to operate two different air systems at the same time. The lightweight valves are designed to lock the trailer brakes and open the air operated vapor valve at the same time. These six-way air valves can be used in the normally open (N/O) and normally closed (N/C) configurations of N/O, N/C, or N/O, N/O, or N/C, N/C positions. They have an adjustable stem and come standard with TTMA and API mounting holes.
Six-Way Air Interlock Valves
  Part Number
EBW 880-256-01 EBW 880-256-02
Description
1/4” - 1” Button Six Way Air Valve 1/4” - 1” Roller Tip Six-Way Air Valve
EBW 880-256-01
EBW 880-256-02
  Key
 Description
 Part Number
   1
 Plug - Nut
   EBW 880-145-01
   2
 Body - Air Valve
  EBW 880-257-01
   3
  Spring
   EBW 880-148-01
   4
Spool & O-Ring Assembly
  EBW 880-258-01
   5
  Silicon Lube (5 PLCs)
   EBW 11529-01
   6
Screw 1/4-20 x 1.5
  EBW 11063-19
   7
  Retaining Ring
   EBW 11090-04
   8
 Dust Seal
   EBW 880-142-01
   9
Washer 1/4 Int. Lock
  EBW 11163-04
   10
  Screw Adjuster 1” with nut
   EBW 880-144-02
   11
 Anti-seize & Lubricant
   EBW 11144-01
   12
 Washer 1/4 Plain Stainless Steel
   EBW 11275-02
   Ensure proper vapor recovery every time by using the Air Interlock with Limit Switch. With the limit switch, bottom loading cannot begin until a vapor recovery hose is connected to the vapor check valve. The switch does its job by breaking a connection in the secondary over-fill prevention system, thus preventing the rack monitor from giving a green light to the transport. Once a vapor line is connected, loading can begin. The coupler first depresses the plunger button of the interlock, which then locks the trailer brake system and completes the connection to the rack monitor. The vapor hose must be disconnected before the brakes will release, allowing the truck to be driven away.
Interlock Valve with Limit Switch
EBW 880-155-01
1/4” - 1” Button with Limit Switch
   Key
 Description
 Part Number
 1
  Air Valve Assembly
  EBW 881-156-01
   2
Screw 1/4-20 x 1.5” Hex Head
  EBW 11063-07
 3
 Rod - Actuator
 EBW 880-154-01
 4
 *Nut - Hex Jam
 EBW 11021-04
 5
  *Adapter - Valve to Switch
  EBW 881-155-01
   6
O -Ring
  EBW 11003-25
 7
 Limit Switch
 EBW 11219-02
   Service Kit for 880-155-01
  EBW 90012
 To locate the Polar Service Center nearest you, please call 1-877-534-2076 west of the Continental Divide and 1-800-955-8558 east of the Continental divide or visit our website at: www.polarcorp.com
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Petroleum Trailer Parts Catalog Interlock Valves



















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