Regulator

Steam Products
Please select the type of steam product:
Condensate Pump
Liquid Drainer
Regulator
Steam Trap

HD Series Regulator (Valve Only)
HD
The Watson McDaniel HD-Series Pilot Operated Regulators were designed for extremely accurate control of temperature and pressure in steam service applications. The HD-Series is made of Ductile Iron for extended pressure and temperature ratings. These regulators use several different control pilots, which can be attached to the valve to control pressure, temperature, or a combination of both. The different control pilots can be added or removed from the regulator body. This modular design adds to the versatility of this product. The most common options include the P-Pilot for pressure reducing, and the T-Pilot for temperature control.
Product Data Sheet
Manufaturer: Watson McDaniel

HD Pilots
A
The "A" Air Pilot is used with the HD Regulator to control steam pressure on steam mains and process equipment. The "A" Air Pilot can also be used in conjunction with the PTL or PTR pneumatic temperature controllers for controlling temperature in process applications. The principal advantage the "A" Air Pilot over standard spring loaded pilots is that pressure adjustments to the regulator can be made from a remote location. A regulator that is placed in a difficult to reach or inaccessible location can be adjusted by a remote control panel board placed in an accessible location. Note: Temperature Control Range: 0-350 degrees F when used with PTL & PTR Pneumatic Temperature Controllers.
Product Data Sheet
Manufaturer: Watson McDaniel

BP
The "BP" Back-Pressure Pilot used with the HD regulator, maintains upstream pressure in steam systems. These regulators are commonly used to supply flash steam to low pressure mains. The BP Pilot can maintain downstream pressure to +/- 1 PSIG.
Product Data Sheet
Manufaturer: Watson McDaniel

DP
The "DP" Differential Pressure Pilot is used with the HD Regulator to maintain steam pressure at a balanced differential pressure above another media source. This is typical on an oil burner where steam used for atomization is injected into the oil burner at a set pressure above the incoming oil supply. Therefore, as oil pressure fluctuates based on demand, the steam pressure will be maintained at a differential pressure above the oil pressure.
Product Data Sheet
Manufaturer: Watson McDaniel

P
The "P" Pressure Pilot is used with the HD Regulator to control steam pressure in steam mains or for process equipment. Pilot operated regulators will maintain constant downstream pressure even when the inlet pressure to the valve fluctuates or steam usage varies. The P Pilot can maintain downstream pressure to +/- 1 PSIG.
Product Data Sheet
Manufaturer: Watson McDaniel

P5
The "P5" Pressure Pilot is used with the HD Regulator to control steam pressure in steam mains or for process equipment. Pilot operated regulators will maintain constant downstream pressure even when the inlet pressure to the valve fluctuates or steam usage varies. The P5 Pilot can maintain downstream pressure to +/- 0.5 PSIG.
Product Data Sheet
Manufaturer: Watson McDaniel

S
The "S" Solenoid Pilot can be used for automatic operation, remote control, programmed cycling, sequential function interlocks with other equipment, and emergency shut-off in case of power failure. The "S" Pilot can be used in conjunction with Pressure, Temperature, or Air Pilots to electrically control on/off operation of the HD Regulator. When the solenoid pilot is used, the regulator can be turned on or off by electrically activating or de-activating the solenoid. Normally Closed (nc) - Standard / The normally closed Solenoid Pilot remains closed in the non-activated state. The regulating valve will remain closed until an electrical signal is sent to the solenoid pilot. This is known as a fail-safe condition. Normally Open (no) - Optional / The normally opened Solenoid Pilot remains open in the non-activated state. The regulating valve will function normally unless an electrical signal is used to shut-off the solenoid pilot.
Product Data Sheet
Manufaturer: Watson McDaniel

T
The "T" Temperature Pilot is used with the HD regulator to control temperature in various processes and systems. Some examples are: Oil Heaters, Ovens, Process heaters, Vats, Dryers and Jacketed Kettles. Note: The Low Pressure Temperature Pilot must be used in conjunction with a low pressure main valve for applications where inlet steam pressure is less than 15 PSIG.
Product Data Sheet
Manufaturer: Watson McDaniel

TRP
The "TRP" Temperature Pilot is used with the HD Regulator to control temperature in various processes and systems. Some examples are: Oil heaters, Ovens, Process Heaters, Vats, Dryers and Jacketed Kettles. The "TRP" Pilot will control lower temperatures than the standard "T" Pilot.
Product Data Sheet
Manufaturer: Watson McDaniel

HD Regulators With Common Pilots
HDP
The HD Regulator with the "P" Pressure Pilot is used for reducing steam pressure in piping mains and process applications. Pilot-operated regulators will maintain constant downstream pressure even when the inlet pressure to the regulator fluctuates or steam usage varies.
Product Data Sheet
Manufaturer: Watson McDaniel

HDT
The HD Regulator with the "T" Temperature Pilot is used for controlling temperature in various processes and systems, such as Oil Heaters, Ovens, Process Heaters, Vats, Dryers and Jacketed Kettles.
Product Data Sheet
Manufaturer: Watson McDaniel

HDA
The HD Regulator with the "A" Air Pilot is used for reducing steam pressure on steam mains and process equipment. The "A" Air Pilot can also be used in conjunction with the PTL and PTR Pneumatic Temperature Controllers for controlling temperature in process applications. The principal advantage of the "A" Air Pilot over standard spring-loaded pilots is that pressure adjustments to the regulator can be made from a remote location. A regulator placed in a difficult to reach or inaccessible location can be adjusted by a remote control panel board placed in an accessible location.
Product Data Sheet
Manufaturer: Watson McDaniel

HDPT
The HD Regulator with both the "P" Pressure Pilot and "T" Temperature Pilot is used to simultaneously control both pressure and temperature in process applications. Using both the temperature and pressure pilot on the same regulator eliminates the need for two separate regulators to control temperature and pressure.
Product Data Sheet
Manufaturer: Watson McDaniel