Siemens 599-02071 User Guide

Powermite 599 Series

Technical Inst ructions

1/2

MT Series Terminal U nit Three-way Valves

Description

The Powermite Series ANSI Class 250 MT Series three-way valves are designed to work with any MT Series pneumatic or electronic actuator with a 7/32 inch (5.5 mm) stroke.

Document No. 155-197P25

VF 599-6

May 20, 2008

Features

Application

Ordering a Valve Plus Actuator Assembly

Product Numbers

• Direct coupled universal bonnet

• Choice of brass or stainless steel trim

• ANSI Leakage Class IV (0.01% of Cv)

A typical application for the Powermite three-way valve is the mixing of hot or chilled water for convectors, fan coil units, unit conditioners, radiation, reheat coils, and similar terminal units requiring an actuator that delivers a minimum of 67 pounds force (300N).

To order a complete valve plus actuator assembly from the factory, combine the actuator prefix code with the suffix of the valve assembly product number. See Technical Bulletin (TB) 251, (155-306P25) for selection procedure and ordering codes.

Valve assemblies can be ordered using the numbers in Table 1.

Flow Rate Valve size Product Number

Cv (Kvs) Inch (mm) Brass Trim Stainless Steel Trim

0.4

0.63 (0.54)

1.0 (0.85)

1.6 (1.37)

2.5 (2.15)

4.0 (3.44)

6.3 (5.43) 3/4 (20) 599-02070 599-02078 10 (8.6) 1 (25) 599-02071 599-02079

Table 1. Product Numbers.

(0.34) 1/2 (15) 599-02064 599-02072

(15) 599-02065 599-02073 (15) 599-02066 599-02074 (15) 599-02067 599-02075 (15) 599-02068 599-02076 (15) 599-02069 599-02077

Siemens Industry, Inc.

Technical Instructions Powermite 599 Series MT Terminal Unit 3-Way Valves

Body UNS CA 844 bronze or

Spring Range 8-13 psi (55 to 90 kPa)

Canadian Registration Numbers 0H7645.5

-20 to 150

-30 to 66

400

(2758)

200

93

385

(2655)

250

121

365

(2586)

300

149

335

(2300)

350

177

300

(2068)

Document Number 155-197P25 May 20, 2008

Specifications

Material

Operating

Valve size 1/2 inch to 1 inch (15 to 25 mm) Capacity See Tables 3 and 4 and Figure 1 Body style Globe Seat style Metal-to-metal Action 3-way mixing Valve body rating ANSI Class 250; See Table 2 Stem travel (Stroke) 7/32-inch (5.5 mm)

Forged brass C37700 Body trim See Table 1 Stem Stainless steel ASTM A582 Type 303 Packing Ethylene propylene O-ring

Controlled medium Water, glycol solutions to 50% Medium temperature range 35°F to 250°F (2°C to 120°C) Maximum inlet pressure See Table 2 Maximum recommended differential pressure for modulating service Brass trim 25 psi (173 kPa) Stainless steel trim 50 psi (345 kPa) Rangeability Cv <1 >50:1 Cv >1 >100:1 Close-off pressures See Tables 5 and 6 and Figure 2 Close-off ratings According to ANSI/FCI 70-2 Leakage rate Class IV (0.01% of Cv) Flow characteristics Linear

Miscellaneous

0C0838.9 Mounting location NEMA 1 (interior only) Dimensions See Tables 7 and 8 and

Figures 4 and 5 Valve weight See Table 7

Service Kit

Protective black knob to cover the bonnet and threads/manual override

Table 2. Body Temperature-Pressure Rating.

Valve Body

Bronze/

Temperature Pressure

°F °C psig (kPa)

Forged Brass

Page 2 Siemens Industry, Inc.

426888950

Powermite 599 Series MT Terminal Unit 3-way Valves Technical Instructions

Size

inch

Document Number 155-197P25 May 20, 2008

Table 3. Maximum Water Capacity - U.S. Gallons per Minute.

Valve

Size

Pressure Differential - psi

inches Cv\1 2 3 4 5 6 8 10 15 20 25 30 40 50 60 75

0.4 0.6 0.7 0.8 0.9 1.0 1.1 1.3 1.5 1.8 2.0 2.2 2.5 2.8 3.1 3.5

0.63 0.9 1.1 1.3 1.4 1.5 1.8 2.0 2.4 2.8 3.2 3.5 4.0 4.5 4.9 5.5

1.0 1.4 1.7 2.0 2.2 2.5 2.8 3.2 3.9 4.5 5.0 5.5 6.3 7.1 7.8 8.7

1/2

1.6 2.3 2.8 3.2 3.6 3.9 4.5 5.1 6.2 7.2 8.0 8.8 10.1 11.3 12.4 13.9

2.5 3.5 4.3 5.0 5.6 6.1 7.1 7.9 9.7 11.2 12.5 13.7 15.8 17.7 19.4 22 4 5.7 7 8.0 8.9 10 11.3 12.6 15.5 17.9 20.0 21.9 25 28 31 35

3/4 6.3 8.9 10.9 12.6 14.1 15.4 17.8 20 24 28 32 35 40 45 49 55

1 10 14.1 17.3 20 22 24 28 32 39 45 50 55 63 71 77 87

3

Table 4. Maximum Water Capacity - Cubic Meters per Hour (m

/hr).

Valve

Pressure Differential - kPa

Kvs/

(mm)

1 10 20 30 40 50 60 80

150 200 300 400 500

100

0.03 0.11 0.15 0.19 0.22 0.24 0.26 0.30 0.34 0.42 0.48 0.59 0.68 0.76

0.05 0.17 0.24 0.30 0.34 0.38 0.42 0.48 0.54 0.66 0.76 0.94 1.08 1.21

0.09 0.27 0.38 0.47 0.54 0.60 0.66 0.76 0.85 1.0 1.2 1.5 1.7 1.9

15

0.14 0.43 0.61 0.75 0.87 0.97 1.06 1.23 1.37 1.7 1.9 2.4 2.7 3.1

0.21 0.68 0.96 1.17 1.35 1.51 1.66 1.91 2.15 2.6 3.0 3.7 4.3 4.8

0.34 1.1 1.5 1.9 2.2 2.4 2.7 3.1 3.4 4.2 4.9 6.0 6.9 7.7 20 0.54 1.7 2.4 3.0 3.4 3.8 4.2 4.9 5.4 6.7 7.7 9.4 10.9 12.1 25 0.86 2.7 3.8 4.7 5.4 6.1 6.7 7.7 8.6 10.5 12.2 14.9 17.2 19.2

Siemens Industry, Inc. Page 3

Technical Instructions Powermite 599 Series MT Terminal Unit 3-Way Valves

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Document Number 155-197P25 May 20, 2008

Selection Example

See Figure 1.

Figure 1. Water Capacity Graph.

Select a valve given:

Required flow = 20 gpm.

Desired pressure drop = 5 psi.

Choose a 1-inch (25-mm) valve, Cv 10.

Page 4 Siemens Industry, Inc.

Powermite 599 Series MT Terminal Unit 3-way Valves Technical Instructions

(15) (0.34< Kvs <1.37)

(15) (2.15< Kvs <3.44)

1/2 0.4< Cv <1.6

(15) (2.15< Kvs <3.44)

Document Number 155-197P25 May 20, 2008

Figure 2. Close-off Pressures.

Table 5. Close-off Pressures for Electro n ic Actuators.

Action

3-way

NC

Upper Port

Valve Size Inch (mm)

1/2 0.4< Cv <1.6

1/2 2.5< Cv <4

SQS

psi (kPa)

SSC

psi (kPa)

95 (655) 95 (655)

50 (345) 50 (345)

3/4 (20)

40 (276) 40 (276)

1 (25)

NO

Bottom Port

1 (25)

(15) (0.34< Kvs <1.37)

1/2 2.5< Cv <4

3/4 (20)

10 (69) 10 (69)

160 (1103) 95 (655)

85 (586) 55 (379)

70 (482) 40 (276)

1 (25)

Siemens Industry, Inc. Page 5

Technical Instructions Powermite 599 Series MT Terminal Unit 3-Way Valves Document Number 155-197P25 May 20, 2008

Table 6. Maximum Available Close-off Pressures for Pneumatic Actua to rs.

Action

3-way

NC

Upper port

NO

Bottom port

Valve Size Inch (mm)

1/2 0.4< Cv <1.6

(15) (0.34< Kvs <1.37)

1/2 2.5< Cv <4

(15) (2.15< Kvs <3.44)

3/4 (20)

1 (25)

1/2 0.4< Cv <1.6

(15) (0.34< Kvs <1.37)

1/2 2.5< Cv <4

(15) (2.15< Kvs <3.44)

3/4 (20)

1 (25)

2-inch Actuator

0 psi (0 kPa)

(with 8 to 13 psi valve)

95 (655)

50 (345)

40 (276)

15 psi (103 kPa)

(with 8 to 13 psi valve)

45 (310)

25 (172)

10 (69)

Operation

As the valve stem moves downward, the flow through the NO port decreases and the flow through the NC port increases. As the valve stem moves upward, the flow through the NO port increases and the flow through the NC port decreases.

In the event of power failure, a spring return actuator returns the valve to its normal position. Non-spring return actuators will hold the last commanded position. See the Technical Instructions of the various actuators for additional information.

Figure 3.

Page 6 Siemens Industry, Inc.

Powermite 599 Series MT Terminal Unit 3-way Valves Technical Instructions Document Number 155-197P25 May 20, 2008

Sizing

Mounting and Installation

The sizing of a valve is important for correct system operation. An undersized valve will not have sufficient capacity at maximum load. An oversized valve can initiate cycling, and the seat and throttling plug can be damaged because of the restricted opening. Correct sizing of the control valve for actual expected conditions is considered essential for good control.

The following variables must be determined: The medium to be controlled: water, etc.

The maximum inlet temperature and pressure of the medium at the valve. The pressure differential that will exist across the valve under maximum load demand. The maximum capacity the valve must deliver. The maximum line pressure differential the valve actuator must close against. See Application Bulletin (AB)-1 Control Valve Selection and Sizing (155-285) for further

recommendations. See Tables 3 and 4 for valve capacities.

Install the valve so that the flow follows the direction of the arrow indicated on the valve body.

For best performance, install the valve assembly with the actuator above the valve body. The valve and actuator can be installed in any position between vertical and horizontal. It is not recommended to install the valve assembly so that the actuator is below horizontal or upside down.

Service

Allow sufficient space for servicing the valve and actuator. See Table 7 for valve body dimensions. See Figure 5 and Table 8 for dimensions of the service envelope recommended around the actuator.

NOTE: Instructions for field mounting an actuator, wiring diagrams, and start-up

are covered in the Technical Instructions and Installation Instructions for each actuator.

Replace the valve if inoperable.

Siemens Industry, Inc. Page 7

Technical Instructions Powermite 599 Series MT Terminal Unit 3-Way Valves Document Number 155-197P25 May 20, 2008

Dimensions

See Table 7 for valve body dimensions. The letters in Figure 5 refer to the valve centerline to top of actuator, width of the actuator, and service envelope dimensions in Table 8.

Figure 4. 3-Way Valve Body.

Table 7. 3-Way Valve Dimensions.

Valve Size

inch (mm)

1/2

(15)

3/4

(20)

1

(25)

A

2-3/4

(70)

3-1/4

(83)

3-7/8

(98)

B

2-15/16

(74)

3-9/16

(90)

3-15/16

(99)

C

1-5/16

(33)

1-5/16

(33)

1-9/16

(39)

Weight

lb-(kg)

1.10 (0.5)

1.44

(0.65)

2.20 (1.0)

Page 8 Siemens Industry, Inc.

Powermite 599 Series MT Terminal Unit 3-way Valves Technical Instructions Document Number 155-197P25 May 20, 2008

Table 8. Dimensions of the Actuators and Recommended Service Envelope.

Dimensions in Inches (Millimeters).

Figure 5.

Actuator

599-01088

2-Inch

Pneumatic

SQS65U

0 to 10 Vdc

NSR*

SQS65.5U

0 to 10 Vdc

SR**

SQS85.53U

Floating

SR

SSC61U

0 to 10 Vdc

NSR

SSC61.5U

0 to 10 Vdc

SR

SSC81U

Floating

NSR

SSC81.5U

Floating

SR

*NSR: Non-spring Return **SR: Spring Return

Actuator

Prefix

Code

256, 257,

258

264

265

266

261

262

259

260

Valve

size

1/2 (15) 3-1/16 (78) 11 (280) 4 (100) 10 (250) 3/4 (20) 3-1/16 (78) 11 (280) 4 (100) 10 (250)

1 (25) 3-5/16 (84) 11-1/4 (285) 4 (100) 10 (250) 1/2 (15) 6-5/8 (167) 14-1/ 2 (370) 5-1/16 (128) 9 (225) 3/4 (20) 6-5/8 (167) 14-1/ 2 (370) 5-1/16 (128) 9 (225)

1 (25) 6-7/8 (173) 15 (380) 5-1/16 (128) 9 (225) 1/2 (15) 6-1/16 (153) 14 (355) 5-1/16 (128) 9 (225) 3/4 (20) 6-1/16 (153) 14 (355) 5-1/16 (128) 9 (225)

1 (25) 6-5/16 (159) 14-1/2 (370) 5-1/16 (128) 9 (225) 1/2 (15) 6-1/16 (153) 14 (355) 5-1/16 (128) 9 (225) 3/4 (20) 6-1/16 (153) 14 (355) 5-1/16 (128) 9 (225)

1 (25) 6-5/16 (159) 14-1/2 (370) 5-1/16 (128) 9 (225) 1/2 (15) 5-1/2 (140) 13-1/ 2 (343) 4-3/4 (121) 12-3/4 (324) 3/4 (20) 5-1/2 (140) 13-1/ 2 (343) 4-3/4 (121) 12-3/4 (324)

1 (25) 5-3/4 (146) 13-3/4 (349) 4-3/4 (121) 12-3/4 (324) 1/2 (15) 5-1/2 (140) 13-1/ 2 (343) 4-3/4 (121) 12-3/4 (324) 3/4 (20) 5-1/2 (140) 13-1/ 2 (343) 4-3/4 (121) 12-3/4 (324)

1 (25) 5-3/4 (146) 13-3/4 (349) 4-3/4 (121) 12-3/4 (324)

Centerline

to Top of

Actuator, H1

Service

Height,

H

Width or

Diameter of

Actuator,

W1

Service

Width, W

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Technical Instructions Powermite 599 Series MT Terminal Unit 3-Way Valves

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Document No. 155-197P25

Document Number 155-197P25 May 20, 2008

Parts of the Valve

Table 9. 3-Way Bronze/Forged Brass Valves.

Item Part Name Part No. Qty Material

1 Bonnet Assembly — 1 — 2 Spring — 1 Stainless steel 3 Wiper — 1 Nylon

4 Valve Body — 1 Bronze/Forged Brass 5 Stem and Plug Assembly — 1 Stainless steel or brass 6 Upper guide disc — 1 Brass 7 Retaining ring — 1 Stainless steel

Information in this publication is based on current specifications. The company reserves the right to m ake changes in specifications and models as design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respec t i ve owners. © 2008 Siemens Industry, Inc.

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