Selection Guide

ManualsBrandsBarber Colman ManualsDampersSpring Return Valve Actuator for VB-7XXX Series

TAC

1354 Clifford Avenue

P. O. Box 2940

Loves Park, IL 61132-2940

www.tac.com

Selection Guide

Note:

All performance specifications are nominal and conform to acceptable

industry standards. For applications at conditions beyond these specifications,

consult TAC. TAC shall not be liable for damages resulting from

misapplication or misuse of its products.

Globe Valve Assemblies

The TAC VA, VF, and VS-7000 and -9000 series

Linked Globe Valve Assemblies with TAC DuraDrive

Linear Series Actuators are complete actuator/valve

assemblies that accept two position, floating, or

proportional control, respectively, from a DDC system

or from a thermostat, for control of hot water, chilled

water, and steam.

These valve assemblies consist of Linear Series spring

return TAC DuraDrive actuators directly mounted on

1/2" up to 4" (15 mm to 80 mm) 2-way and 3-way globe

valve bodies. 3-way assemblies are available for

mixing (1/2” to 4”) and diverting (1/2” to 2”) applications.

The Linear Series TAC DuraDrive actuators feature

linear travel and an integral linkage, eliminating the

need for separate linkages.

Typical applications include reheat on VAV boxes, fan

coil units, hot and chilled water coils in air handling

units, unit ventilators, and central system applications.

Vx-7xxx-8xx Series

Vx-7xxx-59x Series

Vx-9xxx-8xx Series

Vx-9xxx-59x Series

Linked Globe Valve Assemblies with

TAC DuraDrive™ Linear Series Actuators

2-Way Linked Globe

Valve Assembly

(shown assembly uses

Mx51-710x actuator)

3-Way Linked Globe

Valve Assembly

(shown assembly uses

Mx51-720x actuator)

3-Way Linked Flanged

Globe Valve Assembly

(shown assembly uses

Mx61-720x actuator)

Summary of content (24 pages)

PAGE 1
TAC 1354 Clifford Avenue P. O. Box 2940 Loves Park, IL 61132-2940 www.tac.
PAGE 2
Applicable Literature F-Number Description Audience F-27169 MA51-710x, MF51-7103, and MS51-7103 105 lbf (467 N) Linear Series TAC DuraDrive Actuators General Instructions – – – – – Sales Personnel Application Engineers Installers Service Personnel Start-up Technicians Purpose Describes the actuator’s features, specifications, and possible applications. Provides step-by-step mounting instructions.
PAGE 3
Features and Benefits Features Benefits 24 Vac, 120 Vac, and 230 Vac models. Compact size. Spring return. Manual override. Satisfies a wide range of power requirements. Allows installation in limited spaces. Valve returns to known position upon loss of power. Allows valve positioning and preload adjustment, simplifying installation, start-up, and troubleshooting. Water-resistant rating supports use in most common indoor HVAC environments. Satisfies a wide range of application requirements.
PAGE 4
Linked Globe Valve Assembly Part Numbering System Linked Globe Valve Assemblies VX-XXXX-XXX-X-XX Control Signal Type A = Two Position F = Floating S = Proportional Port Code Configuration 2-Way 1 721, 725 727, 921 = 2-Way, Stem Up Open 722, 726 728, 922 = 2-Way, Stem Up Closed 4 = Straightway 5 = Globe Flanged Size Cv P Code Mixing Diverting 1/2" 0.4 1.3 2.2 4.4 1 2 3 4 — 2.2 — 4.4 — 2.2 — 4.4 3/4" 5.5 7.5 5 6 — 7.5 — 7.5 6 1" 10.0 14.0 7 8 — 14.0 — 15.0 8 1-1/4" 20.
PAGE 5
System Design Considerations Linked Globe Valve Assemblies Note: The information in this section describes characteristics of the VB-7xxx and VB-9xxx valve bodies, which are used in the Vx-7xxx and Vx-9xxx valve assemblies. Control Precision 2-Way Valves: All valves have modified equal percentage flow characteristics. That is, for equal increments of valve stem stroke, the change in flow rate with respect to valve stroke may be expressed as a constant percent of the flow rate at the time of the change.
PAGE 6
3-Way Valves: 3-way mixing valves are designed so that the flow from either of the inlet ports to the outlet is approximately linear, which means the total flow from the outlet is almost constant over the stroke of the valve stem. See Figure-2 for typical flow characteristics of the VB-731x and VB-931x series valve bodies. 100% 90% 80% Rated Flow 70% 60% 50% 40% 30% "A" Port "B" Port 20% 10% 0% 0% 20% 40% Stem Up 60% 80% 100% Stem Down Stroke Figure-2 Typical Flow Characteristics.
PAGE 7
Temperature/Pressure Ratings See Figure-3 for temperature and pressure ratings of 2-way and 3-way valves. Ratings conform with published values and disclaimer. VB-7xxx-0-x-P and VB-9xxx-0-4-P (Cast Bronze Body) Standards: Pressure to ANSI B16.15, Class 250, with 400 psi (2758 kPa) up to 150 °F (65 °C), decreasing to 346 psi (2386 kPa) at 281°F (138 °C). Materials: Valve body is made of bronze, ASTM B584.
PAGE 8
Installation Considerations Mounting Angle of Valve Assembly Be sure to allow the necessary clearance around the valve assembly. The valve assembly must be mounted so that the valve stem is at least 5° above the horizontal. This ensures that any condensate that forms on the valve body will not travel into the linkage or actuator, where it may cause corrosion. On steam applications, where the ambient temperature approaches the limit of the actuator, the valve assembly must be mounted 45° from vertical.
PAGE 9
3-Way Proportional Mixing Valves Used to Bypass Flow L R L L R L When 3-way proportional linked globe valve assemblies are used to control flow through a heating or cooling coil, the valve assembly is piped on the outlet side of the load to throttle the water flow through the load, and therefore control the heat output of the load (Figure-4). Valve Assembly Valve Assembly Bypass Coil A A B B A A B B Return Return Bypass Coil Supply Stem down = flow through coil.
PAGE 10
3-Way Diverting Valves Proportional and two-position 3-way diverting linked globe valve assemblies are used to control the flow of hot or chilled fluids in heating systems, cooling coils, or other load by diverting the flow to either the load or a bypass. The valve must be piped with one inlet and two outlets. (Figure-6). L R L Heat Exchanger Valve Assembly A Return A B B Supply Figure-6 Typical 3-Way Diverting Valve Piping. 10 Copyright 2006 TAC All Rights Reserved.
PAGE 11
Cavitation Limitations on Valve Pressure Drop A valve selected with too high a pressure drop can cause erosion of discs and/or wire drawing of the seat. In addition, cavitation can cause noise, damage to the valve trim (and possibly the body), and choke the flow through the valve. Do not exceed the maximum differential pressure (pressure drop) for the valve selected. Refer to the chart in Figure-7.
PAGE 12
Valve/Actuator Combinations 2-Way Linked Globe Valve Assemblies with Linear Series Actuators Note: Choose a valve assembly having a close-off pressure capability sufficient for the application. Not all valve body and actuator combinations are available factory-assembled. Some combinations must be field-assembled. Table-3 2-Way Linked Globe Valve Assemblies with Linear Series Spring Return Actuators — Selection Chart.
PAGE 13
3-Way Linked Globe Valve Assemblies with Linear Series Actuators Note: Choose a valve assembly having a close-off pressure capability sufficient for the application. Not all valve body and actuator combinations are available factory-assembled. Some combinations must be field-assembled. Table-4 3-Way Linked Globe Valve Assemblies with Linear Series Spring Return Actuators — Selection Chart.
PAGE 14
Globe Valve Body Specifications Table-5 Specifications for 1/2” to 2” VB-7xxx Series and 2-1/2” and 3” VB-9xxx Series Globe Valve Bodies .
PAGE 15
Table-6 Specifications for Flanged 2-1/2” to 4” Vx-9xxx Series Globe Valve Bodies. 2-Way 3-Way Chilled or Hot Water, or Steam Chilled or Hot Water Specifications Flanged Valve Bodies Applications Type of End Fitting Flanged Flanged Size 2-1/2 in. through 4 in. 2-1/2 in. through 4 in.
PAGE 16
Actuator Specifications and Valve Assembly Mounting Dimensions Valve Assemblies with MA51-710x, MF51-7103, and MS51-7103 1/2” (13 mm) Stroke 105 lbf (467 N) Linear Series TAC DuraDrive Actuators Actuator Specifications Inputs Control SIgnal and Power Requirements All 24 Vac circuits are Class 2.
PAGE 17
Actuator Specifications (Continued) Environment Temperature Limits Shipping and storage: -40 to 160 °F (-40 to 71 °C) ambient. Operating: -22 to 140 °F (-30 to 60 °C) ambient. Temperature restrictions: For maximum ambient of 140 °F (60 °C), maximum fluid temperature must not exceed 366 °F (186 °C). Humidity 5 to 95% RH, non-condensing. Locations NEMA 2, UL Type 2 (IEC IP54) with customer-supplied watertight conduit connectors.
PAGE 18
6-49/64 (172) 6-49/64 (172) 3-1/2 (89) 6-5/16 (160) 3-1/2 (89) 6-5/16 (160) E E C A C A J J Figure-8 Mx51-710x with 2-Way Globe Valve. Figure-9 Mx51-710x with 3-Way Globe Valve. 3-1/2 (89) 6-49/64 (172) 6-49/64 (172) 3-1/2 (89) 6-5/16 (160) 6-5/16 (160) E E Flow A B A C J C J Figure-10 Mx51-710x with 2-Way Union Straightway Globe Valve. 6-49/64 (172) Figure-11 Mx51-710x with 2-Way Flared Globe Valve.
PAGE 19
Valve Assemblies with MA51-720x, MF51-7203, and MS51-7203 1/2” (13 mm) Nominal Stroke 220 lbf (979 N) Linear Series TAC DuraDrive Actuators Actuator Specifications Inputs Control SIgnal and Power Requirements All 24 Vac circuits are Class 2.
PAGE 20
Dimensions — 1/2” to 2” Globe Valve Assemblies Valve Assembly Part Number Valve Size in.
PAGE 21
Valve Assemblies with MA61-720x, MF61-7203, and MS61-7203 1” (25 mm) Nominal Stroke 220 lbf (979 N) Linear Series TAC DuraDrive Actuators Actuator Specifications Inputs Control SIgnal and Power Requirements All 24 Vac circuits are Class 2. All circuits 30 Vac and above are Class 1 Power Input Part Number Running Control Signal MA61-7200 MA61-7201 Two-position SPST or Triacs Voltage MS61-7203 a b Connections Holding 60 Hz DC Amps 50/60 Hz VA W VA W 120 Vac ±10% 50/60 Hz 11.7 8.8 10.0 8.
PAGE 22
Dimensions — 2-1/2” and 3” Screwed Globe Valve Assemblies Valve Dimensions in inches (millimetres) Valve Size in. Valve Assembly Part Number 2-Way (Refer to Figure-15) C E J 2-1/2 8-1/2 (216) 3-13/16 (97) 13-15/16 (354) 13-9/16 (344) 8-1/2 (216) 4-5/8 (117) 3 9-1/2 (241) 4-1/4 (108) 14-1/4 (362) 13-5/8 (346) 9-1/2 (241) NPT/Metric Thread 2-Way (N.O.) Vx-9213-59x-4-P Vx-9215-59x-4-P 2-Way (N.C.
PAGE 23
Dimensions — 2-1/2” to 4” Flanged Globe Valve Assemblies Valve Assembly Part Number ASA Flanged 2-Way (N.O.) Vx-9213-59x-5-P 3-Way Vx-9313-59x-5-P ASA Flanged 2-Way (N.C.) Vx-9223-59x-5-P Valve Size in.
PAGE 24
10-5/8 (270) 2-9/16 (65) 9-9/16 (243) 4-1/16 (103) E C G A J F Figure-18 Mx61-720x with 2-1/2” to 4” N.C. 2-Way Flanged Globe Valve. 10-5/8 (270) 2-9/16 (65) 9-9/16 (243) 4-1/16 (103) E C G A J F Figure-19 Mx61-720x with 2-1/2” to 4” 3-Way Flanged Globe Valve. Copyright 2006, TAC All brand names, trademarks and registered trademarks are the property of their respective owners. Information contained within this document is subject to change without notice. TAC 1354 Clifford Avenue P.O.