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Pilot Operated Regulators
Self Contained Pressure
Self Contained Temperature
Back Pressure Regulators
Visit us at booth 6063
| | Regulating valves are widely used in all types of applications to
control pressure or temperature. Pressure regulators for steam service are
used to reduce high pressure distribution steam to pressures more suitable for
heat transfer applications. Because the latent heat of steam increases as
pressure is reduced, pound for pound more energy will be available from low
pressure steam than from high pressure steam. Also, process equipment
designed to withstand low pressure steam will be lighter and less expensive than
high pressure equipment. Watson McDaniel manufactures
different types of regulating valves to satisfy the requirements of a broad
range of applications.
 | Pilot operated valves use a small pilot regulator to sense pressure or
temperature and control the action of a larger valve. This pilot
regulator may be either internally or externally mounted. Use pilot
operated regulators when sensitive, accurate control is required. |
| Direct acting regulators use a spring to balance the fluid pressure acting
on the diaphragm. These regulators are available in both unbalanced
and balanced designs.
 | Unbalanced regulators are single seated valves that are simple and
compact. The delivery pressure will decrease somewhat as flow
increases. This is called droop. |
| Balanced regulators are designed so that the force of the fluid
pressure acting on the valve plug is equally opposed by either another
valve plug (double seated valve) or a balancing piston. Balanced
regulators exhibit less droop than unbalanced units. For a given
body size, double seated regulators have higher capacities than single
seated units, but they will also leak a small amount. |
|
Watson McDaniel manufactures a complete line of regulating valves for
steam, air, gas and oil service to cover a broad range of applications. |
