{"product_id":"l-j-engineering-329dpsrnp-self-relieving-vacuum-regulator","title":"L.J. Engineering 329DPSRNP Self-Relieving Vacuum Regulator","description":"\u003cdiv\u003e\u003cp\u003eThe L.J. Engineering 329DPSRNP serves as a critical control interface for maintaining stable sub-atmospheric pressure within pneumatic circuitry found in automation facilities. Users calibrate the internal sensing mechanism to sustain suction forces between.3 and 1.5 inches of mercury (inHg) using dedicated actuation adjustments. Thread specifications dictate compatibility requirements, utilizing 1\/2-inch NPT male or female ports depending on the manifold assembly for secure pipe engagement. Self-relieving capability ensures the device vents back pressure instantly if upstream flow stops or exceeds thresholds, safeguarding seals from collapsing due to vacuum lock-up. Maintenance crews recognize this exact model 329DPSRNP among others requiring vacuum-rated gauges rather than barometric standards for leak testing. Proper operation involves isolating the regulated branch before adjusting the setpoint dial located on the pressure adjustment knob. The construction materials typically withstand exposure to common industrial fluids without corrosion, allowing continuous service in environments with fluctuating humidity levels.\u003c\/p\u003e\u003c\/div\u003e","brand":"L.J.","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":46254045036778,"sku":null,"price":101.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-045.png?v=1788727428","url":"https:\/\/gtghardware.com\/products\/l-j-engineering-329dpsrnp-self-relieving-vacuum-regulator","provider":"GTG Hardware","version":"1.0","type":"link"}