BARBER COLEMAN VALVE

Buy Barber Coleman Valve

Control valves are used mainly within industrial plants to operating conditions such as temperature, pressure, flow, and liquid level. They do this by fully or partially opening or closing in response to signals received from lers that compare a “setpoint” to a “process variable” whose value is provided by sensors that monitor changes in such conditions. Valves are technically pipe fittings, but are usually discussed as a separate category. In an open , fluid flows in a direction from higher pressure to lower pressure.

The opening or closing of is done by means of electrical, hydraulic or pneumatic systems. Positioners are used to the opening or closing of the actuator based on Electric or Pneumatic Signals.

Valves are used in a variety of contexts, including industrial, military, commercial, residential, and transport. Plumbing , such as taps for hot and cold tap , are the most noticeable types of . Other encountered on a daily basis include gas on cookers, small fitted to washing machines and dishwashers, and safety devices fitted to hot systems.

Valves may be operated manually, either by a hand wheel, lever or pedal. Valves may also be automatic, driven by changes in pressure, temperature, or flow. These changes may act upon a diaphragm or a piston which in turn activates the . Examples of this type of found commonly are safety fitted to hot systems or boilers.

More complex systems using requiring automatic based on an external input (i.e., regulating flow through a pipe to a changing set point) require an actuator. An actuator will stroke the depending on its input and set-up, allowing the to be positioned accurately, and allowing over a variety of requirements

There a variety of Barber Coleman Valves available at HVAC PLUS. The following are a few of these :

  • Ball

These provide excellent solutions for applications. There are two types of ball : There is a pop-top ball for 1/2″ and 3/4″ sizes from the VBB series and the VB-200. The VB-200 series can be used for large . Both these models are available in chrome plated brass as well as stainless steel materials. These cannot be used for steam applications.

  • Zone

In cases where cost is a major consideration, zone are useful. Unlike ball , zone can be used for as well as steam applications.

  • Globe

These are used for high end solutions. They have a linear stroke and are usually used with pneumatic actuators. However Barber Coleman provides theses globe with electric actuators.

Barber-Colman offers a range of two-way and three-way globe designed to steam and hot flow as well as serve in both cooling and heating applications with non-corrosive liquids.

  • Butterfly

For requirements larger than 6″, butterfly are the best suited for the job. Barber Coleman provides for sizes up to 18″ and can even customize for larger requirements.

  • Mixing Valve

These combine the flow of two or more inlets into a single outlet for applications such as temperature and concentration . They are extensively used in situations where specific concentrations must be combined and regulated. Mixing are not used only used to heat or cool . They are used extensively in industrial applications to perform a wide range of temperature and concentration . They are often found in HVAC service (for use in heating, ventilating, and/or air conditioning systems).

A few other from are:

  • Needle , used for accurate flow .
  • Pinch used for slurry flow regulation.
  • Plug ; slim for on/off but with some pressure drop.

Valves vary widely in form and application. Sizes typically range from 0.1 mm to 60 cm (2 ft). Special can have a diameter exceeding 5 meters. Valves are quite diverse and may be classified into a number of basic types. Valves may also be classified by how they are actuated:

  • Hydraulic
  • Pneumatic
  • Manual
  • Solenoid
  • Motor

Valve positions are operating conditions determined by the position of the disc or rotor in the . Some are made to be operated in a gradual change between two or more positions. Return and non-return allow fluid to move in 2 or 1 directions respectively.

Operating positions for 2-port can be either shut (closed) so that no flow at all goes through, fully open for maximum flow, or sometimes partially open to any degree in between. Many are not designed to precisely intermediate degree of flow; such are considered to be either open or shut.

Valves with three ports serve many different functions: Thermostatic mixing mix hot and cold to produce a constant temperature in the presence of variable pressures and temperatures on the two input ports.

A 4-port is a whose body has four ports equally spaced round the body and the disc has two passages to connect adjacent ports. It is operated with two positions. It can be used to isolate and to simultaneously bypass a sampling cylinder installed on a pressurized line. It is useful to take a fluid sample without affecting the pressure of a hydraulic system and to avoid degassing (no leak, no gas loss or air entry, no external contamination).

Many are led manually with a handle attached to the stem. If the handle is turned ninety degrees between operating positions, the is called a quarter-turn . Butterfly, ball , and plug are often quarter-turn . Valves can also be led by actuators attached to the stem. They can be electromechanical actuators such as an electric motor or solenoid, pneumatic actuators which are led by air pressure, or hydraulic actuators which are led by the pressure of a liquid such as oil or . Pilot are which are used to other . Pilot in the actuator lines the supply of air or liquid going to the actuators.

Barber Coleman are some of the best in the world. With more than a hundred years of quality servicing and the manufacturing of top quality products, they have managed to excel at manufacturing systems for building , home and industries. From their actuators and thermostats to their sensors and lers, Barber Coleman Company covers the entire range of products required for any Heating Ventilating and Air Conditioning application.

At HVAC Plus online, you can shop for the entire range of products and service parts, including parts and repair kits, offered by the Barber Coleman company.