{"product_id":"802841bxr-genuine-bendix-r-12-air-brake-relay-valve","title":"802841BXR - Genuine Bendix R-12 Air Brake Relay Valve","description":"\u003cp\u003eGenuine Bendix 802841BXR R-12 Air Brake Relay Valve is used in heavy-duty air brake systems to speed up brake application and release by controlling air flow close to the brake chambers. Instead of routing full brake-delivery air all the way from the foot valve, the R-12 uses a smaller control signal to open and close local reservoir air near the axle. Bendix describes the R-12 as a relay valve normally mounted near the brake chambers it serves.\u003c\/p\u003e\u003cp\u003eKey Functions\u003cbr\u003e- Relays control pressure from the foot brake valve to the service brake chambers.\u003cbr\u003e- Speeds brake application by supplying air from a nearby reservoir.\u003cbr\u003e- Speeds brake release by exhausting chamber pressure locally.\u003cbr\u003e- Provides predictable brake response through a specified 7.5 PSI crack pressure.\u003c\/p\u003e\u003cp\u003eFitment \u0026amp; Specifications\u003cbr\u003e- Component Type: Air Brake Relay Valve\u003cbr\u003e- Bendix Series: R-12\u003cbr\u003e- Bendix Part Number: 802841\u003cbr\u003e- Body Configuration: 2 Supply \/ 2 Delivery, horizontal\u003cbr\u003e- Crack Pressure: 7.5 PSI\u003cbr\u003e- Control Port: 1\/4-18 NPT\u003cbr\u003e- Supply Ports: 2 × 3\/4-14 NPT\u003cbr\u003e- Delivery Ports: 2 × 1\/2-14 NPT\u003cbr\u003e- Exhaust Port: 1\/2-14 NPT\u003cbr\u003e- Operating Temperature Range: -40°F to 200°F (-40°C to 93°C)\u003cbr\u003e- Mounting: Four 0.96 × 0.40 in slots\u003c\/p\u003e\u003cp\u003eVerify fitment with us before ordering to ensure the correct part for your application.\u003c\/p\u003e","brand":"Bendix","offers":[{"title":"Default Title","offer_id":67996880077021,"sku":"WP20461","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20461-1.png?v=1790961769","url":"https:\/\/wisentpartscenter.com\/products\/802841bxr-genuine-bendix-r-12-air-brake-relay-valve","provider":"Wisent Parts Center","version":"1.0","type":"link"}