Siebe Control Valves
Since 1819, some of the most popular and highest quality control products within the HVAC industry have been Siebe valves and Siebe control parts. For almost two hundred years, Siebe has been a premier and innovative producer of both two-way and three-way control valves for heating, ventilation, and air conditioning parts for use in commercial, residential, and industrial applications.
Renowned for their cost-effectiveness and compact structure, Siebe control valves have created a vanguard presence in the HVAC community. Siebe manufactures both two-way and three-way control valves for all types of HVAC applications in residential, commercial, and industrial settings. The two-position control valves are normally selected "line size" to keep pressure drop at a Minimum. Control valves or proportional valves are power-operated devices used to modify fluid flow or pressure rate in a process system. These valves are used throughout industry in many applications.
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Siebe Thermostatic Radiator Valves
Siebe thermostatic radiator valves are a high quality, cost-effective solution to numerous HVAC applications mainly in residential and commercial HVAC systems. Small and easy to install, their thermostatic radiator valves have range-limiting capabilities, non-stick valve internals, a double gland seal, a frost protection setting of 8°, and a range of 12° to 29°C.
Available in 8mm, 10mm, and 15mm sizes, Siebe thermostatic radiator valves provide both vertical and horizontal flow. These valves excel in durability and offer a plethora of benefits, including:
- A construction that prevents the build-up of limescale
- Reverse flow capabilities
- A sleek design intended to prevent the collection of dust and other contaminants
- Double gland seal protection against water leakage
- Liquid-filled chrome head allows for quick changes in temperature
- A positive off position
- Ability to individually set and control temperatures for each room in your TXV system
Although Siebe's most popular valve is its thermostatic radiator valve, they also produce all the typical HVAC valves as well. Some of their valves include the following styles:
•Thermo expansion valves (TXV)
•Solenoid valves
•Ball valves
•Needle valves
•Modular reversing valve
•Mixing valve
Thermo expansion valves (often abbreviated as TXV or TX valve) is a component in refrigeration and air conditioning systems that controls the amount of refrigerant flow into the evaporator, thereby controlling the superheat at the outlet of the evaporator. Thermal expansion valves are often referred to generically as "metering devices".
Solenoid valves are devices that use a solenoid to control valve activation. Actuation methods include electric, electro-hydraulic, electro pneumatic, and pneumatic. Unpowered states include normally open and normally closed. In a tandem center solenoid valve, the pressure and tank ports are connected while the service ports are blanked. This allows system unloading while still providing isolation of the service lines. In a float center solenoid valve, the supply pressure port is closed. All others ports are interconnected. This allows the supply to be shut off while enabling the load to move or free wheel with flow available to other services. Solenoid valves include ball and butterfly valves.
Ball valves provide tight shut-off and characterize-able control. They have high range-ability due to the design of the regulating element, without the complications of side loads typical of butterfly or globe valves.
Needle control valves have a slender, tapered point at the end of the valve stem that is lowered through the seat to restrict or block flow. Fluid flowing through the valve turns 90 degrees and passes through an orifice that is the seat for a rod with a cone shaped tip.
Mixing valves are designed to combine the flows of two or more inlets into a single outlet. They are extensively used in situations where specific concentrations must be combined and regulated. The most common application for mixing valves is to combine, regulate and dispense hot and cold water received from two inlets. In most cases, a temperature sensitive element is employed, which expands or contracts depending upon the temperature coming into the valve.
Other types of valves temperature controls from Siebe are listed below.
Globe valves These valves are linear motion valves with rounded bodies, from which their name is derived. They are widely used in industry to regulate fluid flow in both on/off and throttling service
Diaphragm valves These types of valves are related to pinch valves, but use an elastomeric diaphragm instead of an elastomeric liner in the valve body. This is to separate the flow stream from the closure element. Instead of pinching the liner closed to provide shut-off, the diaphragm is pushed into contact with the bottom of the valve body to provide shut-off.
Pinch valves Pinch valves include any valve with a flexible elastomer body that can be pinched closed, cutting off flow, using a mechanism or fluid pressure. Pinch valves are full bore, linear action valves so they can be used in both an off/on manner or in a variable position or throttling service.
Butterfly valves These particular valves are quick opening valves that consist of a metal circular disc or vane with its pivot axes at right angles to the direction of flow in the pipe, which when rotated on a shaft, seals against seats in the valve body. They are normally used as throttling valves to control flow.
Plug control valves These valves date back to ancient times, where they were developed for use in citywide Roman plumbing systems. Today, they remain one of the most widely used valves for both on/off and throttling services.
Siebe offer their customers valve repair kits for every valve product as well as a full line of valve parts like valve linkage extension kit, globe valve linkage kit and valve body, and valves sensors.
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