Description
QUICK RELEASE/CHECK VALVE – QR-1C (1/2" NPT)
PART NUMBER(S):
Fleet Products: 289714, 289714-G | OE: 289714, KN32041, 289714RX, BHV289714N, N20952A
DESCRIPTION:
Model: Quick Release + Double Check (QR-1C)
Vehicles: Universal fit for heavy-duty truck and trailer air brake systems (emergency side of spring brakes)
• Releases air pressure from the emergency side of spring brakes
• Prevents simultaneous application (anti-compounding function)
• Supply Port Size: 1/4" NPT
• Delivery Port Size: 3/8" NPT
• Balance Port Size: 1/4" NPT
• Crack Pressure: 0–1 PSI (max)
• Mounting: Two 11/32" diameter holes, bolt-on (1.5" spacing)
• Combines quick release and check valve functionality
• Direct exhaust, reduces brake lag
• Double check prevents anti-compounding during emergency applications
Used primarily on the emergency side of spring brake systems in trucks and trailers. Ensures rapid air exhaust and prevents unintended simultaneous spring brake application. Commonly specified across Freightliner, Mack, Navistar, Volvo, and other North American truck platforms. Designed for use in robust air brake systems with reliability and safety-critical performance.
CROSS-REFERENCE(S):
289714, 289714N, 289714RX, 289714X, 289714P, OR289714X, BW289714, BW289714N, 104576, KN32041, BHV289714N, QR-1C, ZZ289714, KN32040, AV289714, BEN289714N, OTR289714, E-BN289714N, 745-289714N, 745-289714RX, 25175160, 20QE2288, 2QE2288, TDAR955289714N, R955289714N, R955289714X, ZAC289714, 1676745C1, BAN289714, BX289714N, 034012, 729013401, 85150276, ACA-09479700, N17943, TWDBEN289714N, FB8536, H289714, OR289714, R289714, K289714, BND289714N, BX289714B1, BX289714X, BXOR289714, BXW289714, 109089, 800539, 6300WKN32041, 8235R955289714N, TDARKN32041, WKN32041, 4735050030, 9340990100, 9340990150, 9340990200, 34012, 170.289714, 170289714, 8235RKN32041, AM170289714, 3626, 36260, EM36260, LQV-3626, 14477, TV289714, KL3516WA, BER-289714, S-9749, S9749, M-289714, 0587-289714P, 14233, 1899664717, 3501023, 4820-01-095-1697, 90015034, B9749GRP, F224699, FC289714, Q7005A, RL3516FD07, SM-3321, US31-1046
A cross-reference listing means this part may be a compatible replacement for these part numbers based on OEM or distributor data.
IMPORTANT INSTALLATION NOTES:
✔ Ensure no leaks; verify operation of check valve to prevent anti-compounding
✔ Use thread sealant compatible with NPT ports
✔ Mount using two 11/32" bolts (1.5" spacing)
✔ Test for leaks and function after installation
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