Schneider Electric VA-7000 Series, VA-9000 Series, VF-7000 Series, VF-9000 Series, VS-7000 Series Selection Guide

Selection Guide

VA/VF/VS‑7000/9000 Series

Linked Globe Valve Assemblies with Linear SmartX Actuators

Globe Valve Assemblies

The Schneider Electric VA, VF, and VS‑7000 and ‑9000 series
Linked Globe Valve Assemblies with Schneider Electric SmartX
Linear Series Actuators are complete actuator/valve assemblies

that accept two position, oating, 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

Schneider Electric SmartX 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 Schneider
Electric SmartX 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.

2-Way Linked Globe

Valve Assembly

(shown assembly uses

SmartX Mx51-710x

actuator)

3-Way Linked Globe

Valve Assembly

(shown assembly uses

SmartX Mx51-720x

actuator)

3-Way Linked Flanged
Globe Valve Assembly

(shown assembly uses

SmartX Mx61-720x

actuator)

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Docume nt Number: F-2725 2-4

Applicable Literature

F-Number Description Audience Purpose

F‑27169

F‑27120

F‑27171

F‑27165

F‑27167

F‑26080 EN‑205 Water System Guidelines

F‑24380

F‑26075

F‑26077

F‑24384

F‑26073

F‑26079

F‑26074

F‑26078

F‑26076

F‑24382

F‑25672

F‑24386

F‑25673

F‑24393

F‑25674

MA51‑710x, MF51‑7103, and MS51‑7103 105 lbf (467 N) Linear Series
SmartX Actuators General Instructions

MAx1‑720x, MFx1‑7203, and MSx1‑7203 220 lbf (979 N) Linear Series
SmartX Actuators General Instructions

MA51‑710x, MF51‑7103, MS51‑7103 Linear Series SmartX Actuators
Installation Instructions

Mx51-710x, Mx51-720x, and Mx61-720x SmartX Linear Series Spring

Return Actuator Submittal Sheet

Vx‑7xxx‑xxx‑x‑P and Vx‑9xxx‑xxx‑x‑P Two‑Way and Three‑Way Globe

Valve Assemblies with SmartX Linear Series Spring Return Actuators

Submittal Sheet

VB-7211 Series 1/2” to 1¼” Union Straightway NPT Stem Up Open,

2‑Way Valves General Instructions

VB-7213 Series 1/2” to 2” Screwed NPT Stem Up Open, 2-Way Valves

General Instructions

VB-7215 Series 15 mm to 50 mm Screwed Rp Stem Up Open, 2-Way

Valves General Instructions

VB-7221 Series 1/2” to 1¼” Union Straightway NPT Stem Up Closed,

2‑Way Valves General Instructions

VB‑7223 Series 1/2” to 2” Screwed NPT Stem Up Closed, 2‑Way Valves
General Instructions

VB‑7225 Series 15 mm to 50 mm Screwed Rp Stem Up Closed, 2‑Way
Valves General Instructions

VB-7313 Series 1/2” to 2” Screwed NPT 3-Way Mixing Valves General

Instructions

VB-7315 Series 15 mm to 50 mm Screwed Rp 3-Way Mixing Valves

General Instructions

VB-7323 Series 1/2” to 2” Screwed NPT 3-Way Diverting Valves General

Instructions

VB-9213 Series 2½” to 6” Screwed or Flanged Stem Up Open, 2-Way

Valves General Instructions

VB-9215 Series 65 mm and 80 mm Screwed Stem Up Open, 2-Way

Valves General Instructions

VB-9223 2½” to 6” Screwed or Flanged Stem Up Closed, 2-Way Valves

General Instructions

VB‑9225 Series 65 mm and 80 mm Screwed Stem Up Closed, 2‑Way
Valves General Instructions

VB-9313 Series 2½” to 6” Screwed or Flanged 3-Way Mixing Valves

General Instructions

VB-9315 Series 65 mm and 80 mm Screwed 3-Way Mixing Valves

General Instructions

– Sales Personnel
– Application Engineers
– Installers
– Service Personnel
– Start‑up Technicians

– Sales Personnel
– Application Engineers

– Application Engineers
– Installers
– Service Personnel
– Start‑up Technicians

– Sales Personnel
– Application Engineers
– Installers
– Service Personnel
– Start‑up Technicians

Describes the actuator’s features,

specications, and possible applications.
Provides step-by-step mounting instructions.

Describes the actuator’s features and
possible applications. Provides step‑by‑step

mounting instructions.

Describes features and specications of the

Linear Series SmartX Actuators.

Describes features and specications of the
Globe Valve Assemblies using the Linear

Series SmartX Actuators.

Describes approved water treatment
practices.

Describes the valve’s features, specications,

and possible applications. Provides

step-by-step mounting, installation, and

checkout instructions.

Selection Guide

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Document Number: F-27252-4

Selection Guide

Features Benefits

24Vac, 120Vac, and 230Vac models. Satisfies a wide range of power requirements.

Compact size. Allows installation in limited spaces.

Spring return. Valve retur ns to known position upon loss of power.

Manual override. Allows valve positioning and preload adjustment, simplifying installation,

start-up, and troubleshooting.

Rugged polymer or die-cast housings rated for up to NEMA2, UL
Type2 (IP54).

Valve sizes 1/2” to 4” and 15 mm to 80 mm (Union Straightway, NPT,
Flanged, Metric) 2-Way and 3-Way.

Up to 250 psig (1724 kPa) close-off. Meets variety of close-off requirements.

Built-in position feedback on MFx1-710x floating and all
proportional models.

High fluid and ambient temperature ratings. Allows use in harsh environments.

Proportional models feature control function switch or jumper. Allows the selection of direct or reverse action for application flexibility.

Thermal isolation. Protects the actuator from cold or excess heat generated by chilled water,

Spring-loaded PTFE valve packing. Self adjusting. No tightening required.

250 psig valve body static pressure rating per ANSI Standards
(B16.15—1985) for screwed cast bronze bodies. 125psig valve
body static pressure rating for cast iron flanged bodies.

Overload protection on all models. Eliminates application of excessive force on stem and overheating of

Highly visible position indicator. Shows the valve position, facilitating setup, checkout, and troubleshooting.

24Vac models require less than 10VA. Saves cost while meeting job specifications, by using fewer transformers

Water-resistant rating suppor ts use in most common indoor HVAC
environments.

Satisfies a wide range of application requirements.

Offers maximum flexibility in selecting precise control for a wide variety of
applications, significantly reducing installation time.

hot water, or steam passing through the valve. Discourages condensation.

Meets most demanding pressure requirements.

actuator.

and less energy.

Globe Valve Assembly Selection Procedure

When selecting a globe valve assembly, you must deter mine the applicable codes for the control signal type, valve body configuration, end
connection, port size, and actuator. Select a globe valve assembly part number as follows:

1. Control Signal Type, Valve Body Configuration, and End Connection

Referring to “Part Numbering System” on page 4, select the appropriate codes for these part number elds.

2. Valve Size (Flow Coefficient)

If the required ow coefcient (C

a. Refer to the “Sizing and Selection” section on pages 8 to 11, to calculate the required Cv.

b. Select the nearest available Cv and corresponding valve body port code from “Part Numbering System” on page 4.

3. Actuator

Select the appropriate actuator and code, according to “Part Numbering System” on page 4, based on the control signal type,
required valve normal position, and voltage requirements. For detailed actuator information, refer to the applicable actuator
specications on page 16, 19, or 21.

Note: Globe Valve Assemblies are not available with Mx51‑7103‑0x0 actuators (equipped with appliance wire). However, if

required, you may eld-assemble one of these actuators to a globe valve body. For information on Mx51-7103-0x0 actuators,
refer to page 16.

4. Close-off Pressure

Conrm in Table-3 or Table-4 that the selected actuator and valve body combination provides sufcient close-off pressure. If no

close‑off pressure is shown, the valve body/actuator combination is not valid.

5. Available Space

If available space is a consideration, check the appropriate dimensional gure (Figure 8 through Figure 19) and its accom­panying table for any potential t problems.

) has not yet been determined, do so as follows:

v

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Docume nt Number: F-2725 2-4

Selection Guide

Port Code

Control Signal Type

A = Two Position
F = Floating
S = Proportional

Connection

1 = Union Straightway

a

2 = Flared End

b

3 = Thread NPT
5 = Metric Thread (Rp)

c

a

1/2" to 1-1/4" only.

b

1/2" only.

c

15 to 80 mm only.

Pattern Code

4 = Straightway
5 = Globe Flanged

Linked Globe Valve Assemblies

Actuator

V X - X X X X - X X X - X - X X

Two Position

MA51-7100=801
MA51-7103=N/A

d

MA51-7103-100=804
MA51-7101=802
MA51-7200=592
MA51-7201=591
MA51-7203=593
MA61-7200=595
MA61-7201=594
MA61-7203=596

Floating

MF51-7103=N/A

d

MF51-7103-100=804
MF51-7203=593
MF61-7203=596

1 The configuration of the valve assembly determines the valve stem

position and flow, as shipped from the factory. See the table below.

2-Way 3-Way

C

v

Size C

v P Code Mixing Diverting P Code

1/2" 0.4 1 — —

1.3 2 2.2 2.2 2

2.2 3 — —

4.4 4 4.4 4.4 4

3/4" 5.5 5 — —

7.5 6 7.5 7.5 6

1" 10.0 7 — —

14.0 8 14.0 15.0 8

1-1/4" 20.0 9 20.0 20.0 9

1-1/2" 28.0 10 28.0 28.0 10

2" 40.0 11 41.0 40.0 11

2-1/2" 56.0 12 67

e

— 12

65.0 12 74

f

— 12

3" 85.0 13 91

e

— 13

85.0 13 101

f

— 13

4" 145.0 14 170 — 14

k

vs

kvs

15 mm 0.3 1 — —

1.1 2 1.9 — 2

1.9 3 — —

3.8 4 3.8 — 4

20 mm 4.8 5 — —

6.5 6 6.5 — 6

25 mm 8.7 7 — —

12.0 8 12.0 — 8

32 mm 17.0 9 17.0 — 9

40 mm 24.0 10 24.0 — 10

50 mm 35.0 11 36.0 — 11

65 mm 56.0 12 58.0 — 12

80 mm 73.0 13 78.0 — 13

e

Threaded valve body.

f

Flanged valve body.

Valve Assemblies Valve Body Action Factory Shipped Position Action

Valve Stem Flow

VX-721X-XXX-4-P 2-Way Stem Up Open Up Open A to AB Flow decreases as actuator extends
VX-725X-XXX-4-P
VX-727X-XXX-4-P
VX-921X-XXX-X-P

VX-722X-XXX-4-P 2-Way Stem Up Closed Up Closed A to AB Flow increases as actuator extends
VX-726X-XXX-4-P
VX-728X-XXX-4-P
VX-922X-XXX-X-P

VX-731X-XXX-4-P 3-Way Mixing Up B to AB A to AB Flow increases as actuator extends
VX-931X-XXX-X-P B to AB Flow decreases as actuator extends

VX-732X-XXX-4-P 3-Way Diverting Up B to AB B to A Flow increases as actuator extends

B to AB Flow decreases as actuator extends

Proportional

MS51-7103=N/A

d

MS51-7103-20=N/A

d

MS51-7103-30=N/A

d

MS51-7103-40=N/A

d

MS51-7103-50=N/A

d

MS51-7103-60=N/A

d

MS51-7103-100=804
MS51-7103-120=806
MS51-7103-130=808
MS51-7103-140=810
MS51-7103-150=812
MS51-7103-160=814
MS51-7203=593
MS61-7203=596

Configuration

721, 725 = 2-Way, Stem Up Open
727, 921

722, 726 = 2-Way, Stem Up Closed
728, 922

731, 931 = 3-Way, Mixing

732 = 3-Way, Diverting

1

d

Factory assemblies not available.

Purchase actuator and valve body
separately and field assemble.

Linked Globe V

alve Assembly Part Numbering System

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Document Number: F-27252-4

Selection Guide

Stroke

Closed

Open

100%

90%

80%

70%

60%

50%

40%

30%

20%

10%

0%

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Rated Flow

StrokeStem Up

Stem Down

0% 20% 40% 60% 80% 100%

Rated Flow

100%

90%

80%

70%

60%

50%

40%

30%

20%

10%

0%

"A" Port

"B" Port

050

(345)

100

(689)

150

(1034)

200

(1379)

250

(1724)

300

(2068)

350

(2458)

400

(2758)

400 (204)

340 (171)

300 (149)
281 (138)

200 (93)

150 (65)

100 (38)

50 (10)

0

286

(1973)

321

(2218)

169

(1166)

165

(1138)

Limits for
VB-93X3-0-5

Limits for
VB-92X3-0-5

Limits for
VB-727X, VB-728X

Limits for
VB-725X, VB-726X

Limits for
VB-721X, VB-921X-0-4,
VB-722X, VB-922X-0-4,
VB-73XX, VB-93XX-0-4

Temperature—°F (°C)

Pressure—psig (kPa)

Linked Globe Valve Assembly

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. The change
of flow rate with respect to valve stroke is relatively small when the valve
plug is near the valve seat and relatively high when the valve plug is
nearly wide open. See Figure 1 for typical modified equal percentage
flow characteristics of VB-72xx and VB-92xx series valves.

Figure 1 Typical Modified Equal Percentage Flow Characteristics.

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.

Rangeability.

Nominal Valve Size

Standard Metric

1/2” 15 mm

Port Code (P)

1

2 15:1

3 25:1

Nominal
Rangeability

5:1

4 40:1

3/4” 20 mm

1” 25 mm

5 50:1

6 60:1

7 60:1

8 75:1

1¼” 32 mm 9 75:1

1½” 40 mm 10 75:1

2” 50 mm 11 75:1

2½” 65 mm 12 75:1

3” 80 mm 13 75:1

4” — 14 75:1

3-Way Valves: For mixing valves, control begins as soon as plug
displacement allows flow. Thus, the rangeability of 3-way valves
normally exceeds 500:1, which is the reciprocal of 0.2% nominal
leakage.

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. Valve trim is 316
stainless steel stem with brass, stainless steel, or bronze plug, metal-to­metal or EPDM disc with PTFE packing parts. See Table-5 or Table-6 for
further details.

VB-9xxx-0-5-P (Cast Iron Body with Flanged End Fittings)

Standards: Pressure to ANSI B16.1, Class 125, with 200psi (1379kPa)

up to 150°F (65°C), decreasing to 169psi (1165kPa) at 281°F (138°C).

Materials: Valve body is made of cast iron, ASTM A126 ClassB. Valve

trim is 316 stainless steel stem, brass or bronze plug, metal-to-metal or
EPDM disc with PTFE packing parts. See Table-5 or Table-6 for further
details.

Rangeability

Rangeability is the ratio of rated flow to the minimum controllable flow
through a valve.

and VB-92xx series globe valves. Refer to the model charts on the
following pages for detailed valve information.

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Figure 2 Typical Flow Characteristics.

2-Way Valves: Table-1 lists the rangeability for VB-72xx

Figure 3 Temperature and Pressure Ratings for VB-7xxx and VB-9xxx Series Globe Valves.

Selection Guide

Close-off Ratings

Nominal actuator
leakage) with EPDM discs and PTFE discs in steam applications.
Metal-to-metal trim such as brass 3-way and high temperature stainless
are designed for ANSI III (0.1% leakage). Seat leakage for reduced port
versions of metal-to-metal seats may match the full port versions,
allowing up to 1% on the 0.4Cv plugs.

close-off ratings are based on ANSI IV (0.01%

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. See the applicable Actuator General
Instructions for details.

Insulation of Linked Globe Valve Assembly

The globe valve should be completely insulated to minimize the effect of
heat transfer and condensation at the actuator.

Caution: The actuator and the integral linkage must not be insulated.
Doing so will result in excess heat or condensation within the actuator.

Temperature Limits for Globe Valve Assembly

When installing the globe valve assembly, obser ve the minimum and
maximum temperature limits given in the Actuator Specifications and

Valve Assembly Mounting Dimensions section of this document.

Sizing and Selection

Flow Coefficient (Cv)

Two-position Control

Two-position control valves are normally selected “line size” to keep
pressure drop at a minimum. If it is desirable to reduce the valve below

line size, then 10% of “available pressure” (that is, the pump pressure
differential available between supply and return mains with design flow
at the valve location) is normally used to select the valve.

Proportional Control

Proportional control valves are usually selected to take a pressure drop
equal to at least 50% of the “available pressure.” As “available

pressure” is often difficult to calculate, the normal procedure is to select
the valve using a pressure drop at least equal to the drop in the coil or
other load being controlled (except where small booster pumps are
used) with a minimum recommended pressure drop of 5 psi (34 kPa).
When the design temperature drop is less than 60°F (33°C) for
conventional heating systems, higher pressure drops across the valve
are needed for good results (Table-2).

Table 2. Conventional Heating System

Design Tempera­ture
Load Drop °F (°C)

60 (33) or More 50% 1 x Load Drop

40 (22) 66% 2 x Load Drop

20 (11) 75% 3 x Load Drop

a - Recommended minimum pressure drop = 5 psi (34 kPa).

Secondary Circuits with Small Booster Pumps: 50% of available
pressure difference (equal to the drop through load, or 50% of booster
pump head).

Recommended
Pressure Drop
(% of Available
Pressure)

a

Multiplier on
Load Drop

When sizing a valve, you must select a flow coefficient (Cv), which is

defined as the flow rate in gallons per minute (GPM) of 60°F water that
will pass through the fully open valve with a 1psi pressure drop (ΔP) It is
calculated according to this formula:

where ΔP is measured in psi.

Since the flow rate through the heat exchanger is usually specified, the
only variable normally available in sizing a valve is the pressure drop.
The following information in this section can be used to determine what
pressure drop to use in calculating a valve Cv. Once you have calculated
the Cv, consult “Part Numbering System” on page 4 to select the valve
body having the nearest available Cv.

Note: Metric equivalent.

The metric measure of flow coefficient is kvs, which is calcu­lated according to the formula: kvs=

(where DP is measured in bar; 1 bar = 100 kPa.).

If the Cv is already known, it may be converted directly to its
kvs equivalent: kvs=

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Document Number: F-27252-4

Selection Guide

Coil

Return

Bypass

Supply

Stem down = flow through coil.
Stem up = flow through coil bypass.

Coil

Return

Bypass

Supply

Stem up = flow through coil.
Stem down = flow through coil bypass.

Valve
Assembly

A

B

A
B

R

L

L

Valve
Assembly

A

B

A
B

R

L

L

Boiler

Return

Bypass

A

B

A
B

Coil

Return

Supply

Supply

A

B

A
B

Typical Boiler Hot Water Reset Typical Primary-Secondary Piping

System

Pump

From
Other

Zones

Balancing

Cock

Balancing

Cock

To Other

Zones

Valve
Assembly

A

B

A
B

R

L

L

Valve
Assembly

A

B

A
B

R

L

L

3-Way Proportional Mixing Valves Used to Bypass Flow

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).

Figure 4 Typical Piping of 3-Way Mixing Valve for Control of Heating or Cooling Coil.

3-Way Proportional Mixing Valves used to Blend Water Flows

Proportional 3-way mixing valves used to blend two water flows (Figure 5) control the heat output by varying the water temperature to the load at
constant flow. These valves do not require high pressure drops for good control results. They can be sized for a pressure drop of 20% of the
“available pressure” or equal to 25% of the pressure drop through the load at full flow.

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Docume nt Number: F-2725 2-4

Figure 5 Typical 3-Way Mixing Valve Piping for Proportional Control Used to Blend Two Water Flows.