{"product_id":"st4-safety-valve-1-2-250psi-oe109914","title":"ST4 SAFETY VALVE 1\/2\" 250PSI - OE109914","description":"The OE Spares OE109914 ST4 Safety Valve 1\/2\" 250PSI is a ST4 Style safety valve for use in truck and trailer air brake systems. Safety valves open at a pre-set pressure to vent excess air from the circuit, protecting compressors and system components from overpressure damage caused by regulator malfunction or compressor over-run. Installed on the wet tank or compressor outlet, the ST4 provides a final safeguard against system overpressure, venting automatically and reseating once pressure normalises.","brand":"OE SPARES","offers":[{"title":"Default Title","offer_id":68408507728123,"sku":"OE109914","price":44.73,"currency_code":"AUD","in_stock":true}],"url":"https:\/\/www.tranzmile.com\/products\/st4-safety-valve-1-2-250psi-oe109914","provider":"Tranzmile - Truck Trailer \u0026 Parts","version":"1.0","type":"link"}