The PP & 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.

• The PP-pilot can maintain downstream pressure to plus/minus 1 psig
• PP5-Pilot can maintain down stream pressure to plus/minus 0.5 psig
• Choices of three overlapping pressure ranges
• Pilot is easily installed on pilot adapter using 4-bolts, no tubing connections are required
• Full-port strainer and blow-down valve on pilot adapter for protection of pilot from dirt and scale
• Solid floating diaphragm is more failure-resistant
• Watson McDaniel's pilots can be used with other manufacturers regulators

Applications: For HD regulators

• Technical Drawing https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS12705_Tech.pdf