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ST-4 Safety Pop Off Valve - Pressure Relief Valve 250 PSI, 1/2" NPT, Replaces 131081, 3559097, 3403479 Safety Valve in Saudi Arabia ST-4 Safety Pop Off Valve - Pressure Relief Valve 250 PSI, 1/2" NPT, Replaces 131081, 3559097, 3403479 Safety Valve in Saudi Arabia ST-4 Safety Pop Off Valve - Pressure Relief Valve 250 PSI, 1/2" NPT, Replaces 131081, 3559097, 3403479 Safety Valve in Saudi Arabia

ST-4 Safety Pop Off Valve - Pressure Relief Valve 250 PSI, 1/2" NPT, Replaces 131081, 3559097, 3403479 Safety Valve

SAR 110
Category
Fittings
– 1 +

Special Features

  • Part Numbers – Direct replacement for Bendix 131081, Cummins 3559097, 3403479, Mack 691GC224. Cross-references: 060-131081, 109914, 1245572, KN31526, S-C645, LSV-5238, 86130183.
  • Compatibility – Works on Tu-Flo 550 & 750 compressors; designed for use with standard air compressor systems that require a 1/2” NPT pop-off valve.
  • Specifications – Features a 250 PSI pressure setting and 1/2” NPT thread size with an overall length of 1-3/8”; suitable for heavy-duty air brake systems.
  • Durability – Constructed from premium copper for superior wear resistance, anti-oxidation, and rust protection, ensuring long-lasting performance under demanding conditions.
  • Easy Installation – Installs directly into the unused compressor discharge port for quick replacement; provides reliable pressure relief for safety and consistent system performance.

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