Valves
A valve is a device that regulates the flow of a fluid by opening, closing, or partially obstructing a passageway.
Modern control valves operate on sophisticated automation systems that are based on external input. The valve is used to regulate flow based on previously-determined setpoints or variables, for example. These types of valves require an actuator, which will position the valve accurately depending on its input and setup. Actuators can be electrical, hydraulic or pneumatic, depending on the application and its environment.
Valves are critical in HVAC applications, and paired with actuators are designed to regulate the flow of both hot and chilled water in HVAC systems. Ball valves are most common for HVAC systems, able to regulate flow in several different directions with just one fitting.
Valves provide several functions, including:
- Starting or stopping flow based on the valve state
- Regulating flow and pressure within a piping system
- Controlling the direction of flow within a piping system
- Throttling flow rates within a piping system
- Improving safety through relieving pressure or vacuum in a piping system
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Our Suppliers
Hattersley
Origin: (England – China)
VIR Engineers & Contractors
Manufacturer of tube fittings.
Watts Water Technologies
Origin: USA
Mueller Fire Valves
Origin: USA
Brass Valves – Bonze Valves – Cast Iron Valves
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COMMON VALVE TYPES AND THEIR APPLICATIONS
Valves feature a range of characteristics, standards, and groupings that help to give you an idea of their intended applications and expected performance. Valve designs are one of the most basic ways to sort the huge range of valves available and find a good fit for a project or process.
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BALL VALVE
Predominantly equipped with quick-acting 90-degree turn handles, these valves use a ball to control flow to provide easy on-off control. Generally accepted by operators to be faster and easier to operate than gate valves.
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Air Vents
Air vents are designed for use on heating systems. Our line includes products such as high-capacity air vents that provide automatic air venting for hot or cold-water distribution systems and models with a manual vent feature for fast venting of residential and commercial systems.
DuoVent High Capacity Air Vents with manual vent
FV-4 Automatic Vent Valves
Automatic Vent Valves, Chrome Plated
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Pressure & Temperature Gauges
Instruments used to measure and display pressure mechanically are called pressure gauges, vacuum gauges, or compound gauges (vacuum & pressure). The widely used Bourdon gauge is a mechanical device, that both measures and indicates and is probably the best-known type of gauge.
Temperature, pressure gauges, and indicators are standard equipment for any hydronic or radiant heating project and are designed to provide an accurate reading of system parameters to maintain or adjust temperature/pressure at desired levels.
Pressure gauges are used in commercial, residential, and institutional HVAC applications. We have models with various configurations, sizes, and pressure rating scales.
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Lead Free Combination Pressure and Temperature Gauges, Bottom-Entry
Lead Free* Bottom-Entry Pressure Gauges
Combination Pressure and Temperature Gauges, Center Back-Entry
Lead Free Liquid-Fill Angle Thermometers
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Water Hammer Arrestors
Water hammer arrestors are used to absorb the shock when water flowing in a piping system suddenly stops due to fast closing shutoff valves, dishwashers, and clothes washers. This action protects against the annoying and potentially damaging effects of the water hammers. We have models for residential and commercial applications.
Lead Free Water Hammer Arrestors
Lead Free Water Hammer Arrestors
Lead Free Mini Water Hammer Arrestors
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GATE VALVE
As one of the most common valve types, gate valves use linear motion to start and stop the flow. These are typically not used for flow regulation. Instead, they are used in fully open or closed positions.
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GLOBE VALVE
Globe valves are typically applied in modulating control operations. Typically available in three body types, T-body , Y-Pattern, and Angle body.
On top of the mechanical motion involved with a valve, also consider the method of actuation. In most cases, valves fall into one of three categories:
- Manual Valves: Typically adjusted by hand, these valves use handwheels, hand levels, gear wheels, or chains to actuate.
- Actuated Valves: Often connected to electric motors, air or pneumatic systems, hydraulic systems, or solenoids, these valves allow remote control and automation for high-precision or large-scale applications.
- Automatic Valves: Some valves activate when a specific flow condition is met. Examples include check valves closing during backflow or pressure release valves activating when an over-pressure condition is detected.
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CHECK VALVE
Used to prevent backflow, these valves are typically self-activated allowing the valve automatically opens when media passes through the valve in the intended direction and close should flow reverse.
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FIRE PROTECTION GATE VALVE (MUELLER)
Mueller resilient wedge gate valves have features to make them easier to operate and preserve sealing capability, and interior coating integrity for many years of reliable service. Numerous designs and end connections are available that meet stringent UL/FM requirements, some with maximum working pressures of 350psi. In addition to popular end connection options.
FIRE PROTECTION CHECK VALVE (MUELLER)
Mueller UL listed, FM approved check valves are of the gravity operated, swing check design. They are rugged in construction and simple in design, allowing for removal of all parts through the top of the valve for inspection or replacement without removing the valve from the line. Mueller check valves are bossed on both sides of the body for connecting by-passes and have a drain plug at the bottom under the inlet end for attaching a drain valve, and are available with either rubber or bronze disc facings.
