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W.E. Anderson Hi-flow Control Valves

Series 2000VA/3000WA Hi-Flow™ Control Valve

Globe Valves, Ideal for Steam and Water Flow Control, 1/2″ to 4″ Sizes, 2-Way or 3-Way

Bronze, Stainless Steel or Iron, Excellent Control of Steam, High Flow Capacity, Linear or Equal Percent Trim


The Hi-Flow™ control valves are pneumatic operated process control valves for use with controllers to regulate the flow of a process variable; that is steam, water, oil, gas, etc. Hi-Flow™ valves are perfect for applications in food processing, dairy production, HVAC, chemical/industrial processing, tire production, textile production, foundry operations, oil drilling rigs, automotive, and more.

Hi-Flow™ control valves were originally designed and manufactured by Taylor and are well known as a durable and dependable valve. Dwyer Instruments acquired the Hi-Flow™ line in 1991 and has continued manufacturing this great quality valve under the W.E. Anderson Division name. Dwyer Instruments offers units from stock and an exceptional lead time on made-to-order units.

W.E. Anderson Hi-Flow™ control valves are single seated, top or cage guided globe valves – probably the simplest, from construction standpoint, yet most versatile control valve in The Hi-Flow™ control valve can fit applications with a smaller size since the valve has a greater flow capacity than most conventional valves of the same size.

Coupled with the high flow capacity, the Hi-Flow™ control valve maintains a wide rangeability of 50:1 to insure precise control. Heavy duty Hi-Flow™ control valves are ruggedly constructed of the highest quality materials, precision machined, and performance tested to assure years of trouble free service. Standard packing consists of PTFE V-rings and wiper to minimize friction without leakage at high operating pressures. Available in brass, iron, 316 SS body, trim is 316 SS with all welded plug construction provide superior durability and corrosion resistance.

Available Downloads


Popular In-Stock Models

2000VA32-230-QS1/2" control valve, Cv of 6.45, bronze body, USP set at 125 psig (8.6 bar), USP adjustable range 96-200 psig (6.8-13.8 bar).
2001VA32-230-QS3/4" control valve, Cv of 10.75, bronze body, USP set at 125 psig (8.6 bar), USP adjustable range 81-155 psig (5.6-10.7 bar).
2002VA32-230-QS1" control valve, Cv of 17.42, bronze body, USP set at 125 psig (8.6 bar), USP adjustable range 123-166 psig (8.5-11.5 bar).
2002VA32-231-QS1" control valve, Cv of 17.42, bronze body, USP set at 125 psig (8.6 bar), USP adjustable range 71-155 psig (4.9-10.7 bar).
2003VA32-230-QS1-1/4" control valve, Cv of 25.30, bronze body, USP set at 98 psig (6.8 bar), USP adjustable range 66-98 psig (4.6-6.8 bar).
2003VA32-231-QS1-1/4" control valve, Cv of 25.30, bronze body, USP set at 125 psig (8.6 bar), USP adjustable range 121-165 psig (8.3-11.4 bar).
2004VA32-231-QS1-1/2" control valve, Cv of 32.10, bronze body, USP set at 125 psig (8.6 bar), USP adjustable range 104-137 psig (7.2-9.5 bar).
2005VA32-231-QS2" control valve, Cv of 50.30, bronze body, USP set at 88 psig (6.1 bar), USP adjustable range 68-88 psig (4.7-6.1 bar).
2005VA32-233-QS2" control valve, Cv of 50.30, bronze body, USP set at 125 psig (8.6 bar), USP adjustable range 116-145 psig (8.0-10.0 bar).



  • Wide Rangeability of 50:1
  • Exceptional shut-off and leak rate that meets ANSI/FCI 70-2 Class IV (0.01% of Cv in the closed position)
  • Selectable fail safe condition with Air-to-Raise or Air-to-Lower actuators and Push-to-Open or Push-to-Close valve bodies
  • Linear or equal percentage flow characteristics
  • Low flow options of restricted trim or needle plug
  • Removeable and replaceable seat ring


W.E. Anderson Hi-flow Control Valves Specifications


  • Service:Compatible liquids, gases, and steam.
  • Line Size:1/2″ to 2.
  • Body Style:2-way or 3-way globe.
  • End Connections:1/2″ to 2″ female NPT.
  • Pressure Limit:Iron or Bronze Body – 250 psi (17.2 bar), 316 SS Body – 300 psi (20.7 bar).
  • Wetted Materials:Body: iron, bronze, or 316 SS; Trim: 316 SS; Packing: PTFE.
  • Temperature Limits:20 to 400°F (-7 to 204.4°C).



  • Type:Pneumatic spring/diaphragm.
  • Control Signal:3 to 15 psi (0.21 to 1.0 bar) standard. Custom ranges available.
  • Maximum Supply Pressure:220, 222, and 230: 100 psi (6.89 bar). 221, 223, 231, and 233: 50 psi (3.45 bar).
  • Air Connection:1/4″ female NPT.
  • Temperature Limit:150°F (66°C).

Actuator Sizing:
The Hi-Flow™ valve incorporates a Lin-E-Aire pneumatic actuator that automatically controls the valve. The opening, closing and throttling of the valve plug in the valve body is accomplished by varying the air pressure to the diaphragm in the actuator.

There are two types of Lin-E-Aire actuators: Air-toLower and Air-to-Raise. The selection of the type depends upon the desired operation on loss of air supply.
The Lin-E-Aire actuator size and spring are selected to meet the requirements of the application. There are three sizes of actuators available. The actuator must be sized to be large enough to shut-off the valve. The shut-off pressure is the difference between the inlet (upstream) and outlet (downstream) pressure when the valve is closed. If there is no outlet pressure, then the shut-off pressure is just the maximum upstream pressure. The charts on pages 18 to 20 show example model numbers with the maximum shut-off pressure for the three different actuator sizes. The column labeled MAX USP (maximum upstream pressure) is the maximum pressure that the actuator can shut-off against.

Standard operating range is 3 to 15 psig (.21 to 1.0 bar). The spring size is automatically chosen at the factory to provide a 3 to 15 psi operating range at the customer provided shut-off pressure. When ordering a valve the shut-off pressure must be given. The spring has an operating range of shut-off pressures that it will operate, and the Lin-E-Aire® actuators have range spring adjustments for adjusting the valve in the field. It is best to adjust the valve in the application so that it operates at the particular shut-off pressure present.


Trim Styles
Flow Characteristic
The Hi-Flow™ valve is a control valve that is regulating the amount of flow through the valve. How the flow through the valve changes as the valve opens corresponds to the trim style, or flow characteristic, of the valve. The trim style is the shape of the plug in the valve. As the valve opens, the plug shape changes the size of the valve opening, which changes the flow rate through the valve.

There are two types of trim styles, or flow characteristics available in the Hi-Flow™Tm Series; Linear (Fig. 1) and Equal Percentage (Fig. 2). With Linear trim, equal increments of plug travel provide equal increments of flow change. With Equal Percentage trim, equal increments of plug travel provide uniform percentage increments of flow change. The correlation between plug travel and flow is shown in Figure 3.

Choosing the optimum valve characteristic may require a detailed study of the process equipment and its operating conditions. However, in many applications, any valve will operate well and the characteristic need not be considered. Typically these are applications were load changes are small (maximum load no greater than three times the minimum).

A linear valve characteristic is nearly always desirable when the major load change in the process requires merely a change in flow through the valve. Such a load change could be a controller set point adjustment or some other load in the process itself calling for a new valve position. For example, when water is being heated by steam supplied through a control valve, a change in cold water temperature or in the rate of water throughout will call for a linear valve. On the other hand, fluctuations in steam pressure call for an equal percentage valve. There is no ideal solution and the user must decide what is best for the application.

Reduced Flow or Restricted Trim
The Hi-Flow™ Series offers restricted, a smaller port size, trim in the 3/4″ and 1″ size valve body. This allows a reduction in the flow rate through the valve without a reduction in pipe size. The 1″ valve size is available with the 3/4″ and 1/2″ trim sizes, and the 3/4″ valve size is available with the 1/2″ trim size. The restricted trim is available in Linear or Equal Percentage characteristic.

The Hi-Flow™ Series offers needle plugs that reduce the orifice size from full port to a much smaller area size. Needle plugs are ideal for control of small flow rates and come in Linear or Equal Percentage characteristic. Needle plugs are available in the 1/2″, 3/4″, and 1″ body sizes. Linear characteristic needle plug sizes are 3/32″, 1/16″, and 1/32″. Equal Percentage characteristic needle plug sizes are 3/8″, 5/16″, 1/4″, 3/16″, and 1/8″.