{"product_id":"watson-mcdaniel-pp-b-pressure-pilots-cast-steel-body-standard-blue-spring-20-100-psig","title":"Watson McDaniel PP-B Pressure Pilots, Cast Steel Body, Standard, Blue Spring, 20 - 100 PSIG","description":"\u003ch2\u003eWatson McDaniel PP-B Pressure Pilots For HD Regulating Valves (20 - 100 PSIG)\u003c\/h2\u003e \u003ch2\u003eFeatures:\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eThe PP-Pilot can maintain downstream pressure to ±1 PSIG.\u003c\/li\u003e \u003cli\u003ePP5-Pilot can maintain downstream pressure to ±0.5 PSIG.\u003c\/li\u003e \u003cli\u003eChoices of three overlapping pressure ranges.\u003c\/li\u003e \u003cli\u003ePilot is easily installed on pilot adapter using four bolts, no tubing connections are required.\u003c\/li\u003e \u003cli\u003eFull port strainer and blowdown valve on pilot adapter for protection of pilot from dirt and scale.\u003c\/li\u003e \u003cli\u003eSolid floating diaphragm is more failure resistant.\u003c\/li\u003e \u003cli\u003eWatson McDaniel's pilots can be used with other manufacturers’ regulators.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eOptions \u0026amp; Features (See Specification Sheet For Full List):\u003c\/strong\u003e\u003c\/p\u003e \u003ch2\u003ePP \u0026amp; PP5 Pilots\u003c\/h2\u003e \u003cp\u003eThe \u003cstrong\u003ePP \u0026amp; PP5 Pressure Pilots\u003c\/strong\u003e are used with the HD Regulator to control steam pressure in steam mains or for process equipment. Pilot-operated regulators maintain constant downstream pressure even when the inlet pressure to the valve fluctuates or steam usage varies. The PP-Pressure Pilot is adequate for controlling pressure in most industrial applications. For increased accuracy use the PP5 Pilot.\u003c\/p\u003e \u003cp\u003eA Pressure Pilot is used with the HD Regulator to control steam pressure in steam mains or for process equipment. The PP-Pressure Pilot (1.0 PSIG accuracy) is adequate for controlling pressure in most industrial applications. For increased accuracy use PP-5 Pilot. (0.5 PSIG accuracy).\u003c\/p\u003e \u003cp\u003eThe PP \u0026amp; PP5 Pressure Pilots are used with the HD Regulator to control steam pressure in steam mains or for process equipment. Pilot-operated regulators maintain constant downstream pressure even when the inlet pressure to the valve fluctuates or steam usage varies. The PP-Pressure Pilot is adequate for controlling pressure in most industrial applications. For increased accuracy use the PP5 Pilot.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePP-Pressure Pilot (Standard) 1.0 PSIG accuracy.\u003c\/li\u003e \u003cli\u003ePP5-Pressure Pilot (Special Applications) 0.5 PSIG accuracy.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eOptions\u003c\/h2\u003e \u003cul\u003e \u003cli\u003ePressure pilot can be used with temperature pilot to eliminate the need for two separate regulators.\u003c\/li\u003e \u003cli\u003eSolenoid pilot can be added for remote on\/off control of regulator.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eControlling Pressure\u003c\/h2\u003e \u003cp\u003eThe PP and PP5 Pilots are both spring-adjusted pressure pilots. The PP-Pilot is used on typical general purpose pressure reducing applications. The PP5-Pilot is used when higher accuracy is required and is capable of maintaining a control pressure window of less than 1 PSI.\u003c\/p\u003e \u003ch2\u003eHow It Works\u003c\/h2\u003e \u003cp\u003eThe Pressure Pilot controls the operation of the HD Regulator. The sensing line connects the pressure pilot to the downstream side of the regulator. Pressure in the sensing line applies an upward force to the pilot diaphragm to compress the adjustment spring. When system pressure equals set point, the diaphragm moves upwards against the force of the adjusting spring, closing pilot valve. When the pilot valve is shut, steam cannot pass thru to the underside of the regulator diaphragm, closing the regulator. When the steam pressure falls below its set point, the pilot valve opens allowing steam to lift the main valve diaphragm which opens up the regulating valve.\u003c\/p\u003e \u003cdiv style=\"clear: both;\"\u003e \u003c\/div\u003e \u003cdiv class=\"tech\"\u003e \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e \u003cdiv class=\"specs\"\u003e \u003cdiv class=\"column\"\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"left\"\u003ePressure Pilot\u003c\/div\u003e \u003cdiv class=\"right\"\u003e \u003cdiv\u003e(Standard: 1.0 Psig Accuracy) PP\u003c\/div\u003e \u003cdiv\u003e(High-Accuracy: 0.5 Psig Accuracy) PP5\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"left\"\u003ePilot Body Material\u003c\/div\u003e \u003cdiv class=\"right\"\u003e \u003cdiv\u003eCast Steel\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"left\"\u003eMax Inlet Pressure\u003c\/div\u003e \u003cdiv class=\"right\"\u003e \u003cdiv\u003e300 PSIG\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"left\"\u003eReduced Outlet Pressure Range\u003c\/div\u003e \u003cdiv class=\"right\"\u003e \u003cdiv\u003e3-200 PSIG\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"column\"\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"left\"\u003eInlet Pressure Range\u003c\/div\u003e \u003cdiv class=\"right\"\u003e \u003cdiv\u003eHD Standard Main Valve:15-300 PSIG\u003c\/div\u003e \u003cdiv\u003eHD Low-Pressure (LP) Main Valve: 5-20 PSIG\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"left\"\u003eMinimum Differential Pressure\u003c\/div\u003e \u003cdiv class=\"right\"\u003e \u003cdiv\u003eHD Standard Main Valve: 10 PSI\u003c\/div\u003e \u003cdiv\u003eHD Low-Pressure (LP) Main Valve: 3 PSI\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"left\"\u003ePart Number\u003c\/div\u003e \u003cdiv class=\"right\"\u003e \u003cdiv\u003ePP-B\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv style=\"clear: both;\"\u003e \u003c\/div\u003e \u003ch2\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0721\/4576\/4430\/files\/Watson-McDaniel-PP-Series-Pressure-Pilots-Spec-Sheet.pdf?v=1786495361\"\u003eView Technical Specification Sheet Here\u003c\/a\u003e\u003c\/h2\u003e","brand":"Watson McDaniel","offers":[{"title":"Default Title","offer_id":44166049693774,"sku":"PP-B","price":787.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/4576\/4430\/files\/Watson-McDaniel-PP-Series-Pressure-Pilots__99408.1778580030.1280.1280.jpg?v=1786666153","url":"https:\/\/valveman.com\/products\/watson-mcdaniel-pp-b-pressure-pilots-cast-steel-body-standard-blue-spring-20-100-psig","provider":"ValveMan","version":"1.0","type":"link"}