SKU:- K021578 | Part Number:- K021578
Sale price
$1,472.02
Regular price
The Bendix Sr7 Valve Spring Brake K021578 is a spring brake valve used in heavy-duty truck air brake systems to manage airflow to the spring brake chambers. The valve incorporates anti-compounding to help prevent simultaneous service and park brake application and features a 3/8 PTC balance port and 3/8 PTC control port for straightforward plumbing into the air system. Four 3/8-18 NPT delivery ports provide multiple outlet connections, while the 1/2-14 NPT supply port and 1/4-18 NPT park control port support standard air line sizes. The exhaust is oriented facing down and uses an exhaust adapter without silencer to direct exhaust air away from surrounding components. The unit mounts using two 3/8-16 UNC-2A studs with a stud length of 0.94 inches. Operating temperature ranges from -40 degrees F to 200 degrees F (-40 degrees C to 93 degrees C), with a spring brake hold-off pressure of 107 psi and compliance with FMVSS 121 requirements for air brake performance in commercial vehicles.
- Height: 12.001 in - Width: 12.001 in - Length: 12.001 in - Weight: 3.1 lbs - Maximum Operating Temperature: 200 F (93 C) - Minimum Operating Temperature: -40 F (-40 C) - Mounting Stud Length: 0.94 in - Spring Brake Hold-Off Pressure: 107 psi - Used in heavy-duty truck air brake systems to control spring brake operation - Suits applications requiring an SR-7 style spring brake valve - Anti-compounding function helps prevent simultaneous service and park brake application - Balance port sized at 3/8 PTC for correct system plumbing - Control port sized at 3/8 PTC for straightforward air line connection - Four delivery ports with 3/8-18 NPT threads to service multiple brake chambers - Park control port with 1/4-18 NPT thread for park brake circuit connection - Supply port with 1/2-14 NPT thread to accept main air supply - Exhaust orientation facing down to direct exhaust air away from surrounding components - Exhaust adapter without silencer for unimpeded exhaust flow - Operating temperature range from -40 deg F to 200 deg F (-40 deg C to 93 deg C) - Mounting via two 3/8-16 UNC-2A studs for secure installation - Mounting stud length of 0.94 in to suit common bracket thicknesses - Spring brake hold-off pressure of 107 psi to maintain correct spring brake release - Complies with FMVSS 121 regulatory requirements for air brake performance - Supplied as an aftermarket new component for replacement use in existing systems
