Siemens VGG Series Manuale del proprietario

Siemens AG Building Technologies Division

VGG Series

Technical Instructions

Document No. 7636us

VGG…

February 09, 2016

VGG10.xxxU Gas Valves

for use with SKPxx.xxxUx electro-hydraulic actuators

ISO 9001 and 14000

REGISTERED FIRM

Only with series SKPxx.xxxUx actuators

Description The normally closed VGG10.xxxU series of single body gas valves combined with

SKPxx.xxxUx series electro-hydraulic actuators to provide safety shut-off, gas pressure

regulation and/or air-gas ratio control for commercial or industrial gas burners.

Table 1. VGG10.xxxU model numbers

Model Numbers Body style Connection

VGG10.154U Single NPT thread

VGG10.204U Single NPT thread

VGG10.254U Single NPT thread

VGG10.404U Single NPT thread

VGG10.504U Single NPT thread

VGG10.654U Single NPT thread

VGG10.804U Single NPT thread

Technical Instructions VGG Series Valves

Document Number CC1N7636us

February 09, 2016

Page 2Siemens AG Building Technologies Division

Features UL listed, FM approved, CSA certified, IRI approvable, ISO 9001 and 14000 certified.

CE, Australian and Japanese approved versions available

¼" NPT pressure taps on the inlet and outlet (see Table 2 for details)

Stainless steel mesh inlet filter protects the valve seat as well as downstream components

Dual stem guides ensure precise disc alignment and tight shut-off

Valves in connection with SKPxx.xxxUx actuators open slowly and close rapidly

Contoured valve disc provides smooth release of gas and stable regulating control

Application All VGG10.xxxU valves can be combined with any SKPxx.xxxUx series actuator. The actuator

can be mounted while the valve is installed and under pressure.

SKPxx.xxxUx regulating actuators are applicable for both low and high supply gas pressure

applications, eliminating excessive regulator inventories. Maximum pressure ratings vary

with valve size (see Table 2).

All VGG10.xxxU valves perform these functions in combination with each of the following

actuators:

SKP15.xxxUx Safety shut-off

SKP25.xxxUx Safety shut-off and constant pressure regulation or zero governor

SKP55.xxxUx Safety shut-off, pressure regulation and differential pressure air-gas ratio

control

SKP75.xxxUx Safety shut-off, pressure regulation and adjustable air/gas ratio control

Since more than one function can be performed by a single valve, fewer components and

fittings are required, significantly reducing both the size and weight of the gas train. In

addition, smaller diameter gas valves can be used. For details on valve sizing refer to the flow

charts (figures 2 and 3).

CAUTION:

Do not oversize valves equipped with a regulating SKP25.xxxUx / SKP55.xxxUx /

SKP75.xxxUx actuator. Oversizing may limit turndown and could cause oscillations.

VGG Series Valves Technical Instructions

Document Number CC1N7636us

February 09, 2016

Siemens AG Building Technologies Division Page 3

Ordering

information

Gas valves and actuators are ordered separately. For additional SKPxx.xxxUx actuator

information, see the following technical instructions:

SKP15.xxxUx 155-751P25

SKP25.xxxUx 155-752P25

SKP55.xxxUx 155-753P25

SKP75.xxxUx 155-754P25

NOTE:

The SKPxx.xxxUx actuators have an operating temperature range of 14 °F to

140 °F (-10 °C to 60 °C)!

Table 2. Product numbers

Product number Size

NPT

Maximum

operating

pressure

psi

Close-off

pressure

psi

Capacity CFH

Natural gas at

P = 1"W.C.

Number of test

points, 1/4"NPT

Valve body

material

Inlet Outlet

VGG10.154U ½" 20 75 327 / 242* 2 2 Aluminum

VGG10.204U ¾" 20 75 614 / 442* 2 2 Aluminum

VGG10.254U 1" 20 75 914 / 686* 2 2 Aluminum

VGG10.404U 1 ½" 20 75 2,047 / 1,643* 2 2 Aluminum

VGG10.504U 2" 20 75 3,511 2 2 Aluminum

VGG10.654U 2 ½" 10 25 5,085 1 1 Cast iron

VGG10.804U 3" 10 25 6,158 1 1 Cast iron

* VGG10.xxxU valves, ½-through 1 ½-inch have reduced flow when used with AGA66 (NEMA 4 kit).

Capacities shown are with/without NEMA 4 kit

Accessories

Part Number Description

AGA61

Manual adjusting throttle attachment AGA61 permits VGG10.xxxU series valves to be used as

adjustable limiting orifice valves. Once adjusted, the AGA61 has a provision to be sealed from

tampering.

AGA66

Sealing gasket to provide NEMA 3, NEMA 3R, and NEMA 4 protection.

- Gasket kit to mount between actuator SKPxx.xxxUx and valve VGG10.xxxU

- Degree of protection increased from IP54 to IP65

- Refer to Mounting Instruction M7643.2 (74 319 0421 0)

Technical Instructions VGG Series Valves

Document Number CC1N7636us

February 09, 2016

Page 4Siemens AG Building Technologies Division

Specifications

Approvals

Agency approvals/standards UL/429, FM/7400,

CSA/ANSI Z21.21/CSA 6.5 C/I

IRI approvable

Agency marks apply only for VGG10.xxxU series

gas valve bodies assembled with SKPxx.xxxUx

actuators.

Operating

environment

Maximum operating pressure See Table 2

Maximum back pressure (differential) 2 psi (150 mbar)

Close-off pressure See Table 2

Permissible gas temperature 14 °F to 140 °F (-10 °C to 60 °C)

Permissible operating temperature 14 °F to 140 °F (-10 °C to 60 °C)

Use Siemens gas valves in accordance with UL429.

The valve is used as:

-Safety shutoff valve (in connection with SKP15.xxxUx)

-Pressure regulation with safety shutoff function (in connection with SKP25.xxxUx,

SKP55.xxxUx or SKP75.xxxUx)

Perm. mounting

position

7631z01us/0815

Operating pressure See Type summary

Types of gases Suitable natural gases, propane, butane and air

Strainer Built-in, mesh size 0.9 mm

Physical

characteristics

Body materials See Table 2

Weight See Table 3

Connections Pipe connections NPT threads (see Table 2)

Pressure and vent taps See Table 2

VGG Series Valves Technical Instructions

Document Number CC1N7636us

February 09, 2016

Siemens AG Building Technologies Division Page 5

Operation All VGG10.xxxU gas valves are normally closed, two-way valves. The valves have a standard,

integral, stainless steel mesh filter (0.9 mm) in the inlet to protect the downstream

components against contamination.

VGG10.xxxU series gas valves have a contoured valve disc for stable regulating control and

smooth release (see Figure 1).

Sectional view of VGG10.xxxU valve

7636z13us/0116

Figure 1. Sectional view of VGG10.xxxU models

Closing spring:

The valve includes a closing spring. The spring force acts as closing force on the valve

seat.

Technical Instructions VGG Series Valves

Document Number CC1N7636us

February 09, 2016

Page 6Siemens AG Building Technologies Division

Gas flow charts

1,000

700

500

400

300

200

100

0.7

0.5

0.4

0.3

0.2

cf/h 1 Natural gas 0.64

cf/h 2 Propane gas 1.52

cf/h 3 Butane gas 2.00

cf/h 4 Air 1.00

m3/h 4 Air 1.00

7 100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2

100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2 3

7 100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2

100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2 3

3 4 5 7 10 2 3 4 5 7 100 2 3 4 5 7 1000 2 3 4 5 7

Sp. Gr.

1,000

700

500

400

300

200

100

0,7

0,5

0,4

´´W.C. mbar

Pressure drop p

2,000

1/2"

3/4"

11/2"

2 1/2"

7636z01us/0815

Figure 2. Sizing VGG10.xxxU valves without AGA66 NEMA 4 kit

Assumptions:

1) Pressure downstream of valve is atmospheric

2) Maximum temperature is 140 °F

3) Valve in fully open position



NOTE:

Pressure drop is for one valve when using SKPx5.xxxUx actuator, without a

NEMA 4 kit (AGA66).

CAUTION:

Do not oversize valves equipped with regulating actuators SKP25.xxxUx,

SKP55.xxxUx or SKP75.xxxUx Oversizing may limit turndown and could cause

oscillations.

VGG Series Valves Technical Instructions

Document Number CC1N7636us

February 09, 2016

Siemens AG Building Technologies Division Page 7

Gas flow charts, continued

1,000

700

500

400

300

200

100

0.7

0.5

0.4

0.3

0.2

cf/h 1 Natural gas 0.64

cf/h 2 Propane gas 1.52

cf/h 3 Butane gas 2.00

cf/h 4 Air 1.00

m3/h 4 Air 1.00

7 100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2

100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2 3

7 100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2

100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2 3

3 4 5 7 10 2 3 4 5 7 100 2 3 4 5 7 1000 2 3 4 5 7

Sp. Gr.

1,000

700

500

400

300

200

100

0,7

0,5

0,4

´´W.C. mbar

Pressure drop p

2,000

1/2"

3/4"

1 1/2"

2 1/2"

7636z02us/0815

Figure 3. Sizing VGG10.xxxU valves with AGA66 NEMA 4 kit

Assumptions:

1) Pressure downstream of valve is atmospheric

2) Maximum temperature is 140 °F

3) Valve in fully open position



NOTE:

Pressure drop is for one valve when using SKPx5.xxxUx actuator, with a NEMA 4

kit (AGA66).

CAUTION:

Do not oversize valves equipped with regulating actuators SKP25.xxxUx,

SKP55.xxxUx or SKP75.xxxUx. Oversizing may limit turndown and could cause

oscillations.

Technical Instructions VGG Series Valves

Document Number CC1N7636us

February 09, 2016

Page 8Siemens AG Building Technologies Division

Dimensions

Dimensions in Inches (mm)

VGG10.xxxU

Ø3.8" (96.52 mm)

Inch

1/4" NPT

ØE

7636m10us/0216

VGG Series Valves Technical Instructions

Document Number CC1N7636us

February 09, 2016

Siemens AG Building Technologies Division Page 9

Dimensions

Dimensions in Inches (mm)

Table 3. VGG10.xxxU models

Valve model Nominal

size

inch

(mm)

ØE

inch

(mm)

inch

(mm)

inch

(mm)

inch

(mm)

inch

(mm)

inch

(mm)

Weight

pounds

(kg)

VGG10.154U ½"3.11

(79)

3.15

(80)

4.29

(109)

1.26

(32)

1.22

(31)

1.10

(28)

1.81

(46)

1.65

(0.75)

VGG10.204U ¾"3.11

(79)

3.15

(80)

4.29

(109)

1.26

(32)

1.22

(31)

1.10

(28)

1.81

(46)

1.65

(0.75)

VGG10.254U 1"3.11

(79)

3.15

(80)

4.29

(109)

1.26

(32)

1.22

(31)

1.10

(28)

1.81

(46)

1.50

(0.70)

VGG10.404U 1 ½"4.02

(102)

4.96

(126)

5.89

(149.7)

1.61

(41)

1.34

(34)

1.34

(34)

2.36

(60)

3.30

(1.50)

VGG10.504U 2"4.21

(107)

4.96

(126)

6.68

(169.7)

1.97

(50)

1.34

(34)

1.34

(34)

2.95

(75)

4.00

(1.80)

VGG10.654U 2 ½"5.91

(150)

7.28

(185)

11.42

(290)

3.62

(92)

2.44

(62)

--- 3.94

(100)

32.50

(15.80)

VGG10.804U 3"5.91

(150)

7.28

(185)

12.20

(310)

3.94

(100)

2.44

(62)

--- 4.72

(120)

34.00

(15.50)

Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design

improvements are introduced. Other product or company names mentioned herein may be the trademarks of their respective owners.

Siemens AG Building Technologies Division

Berliner Ring 23

76437 Rastatt

GERMANY

Your feedback is important to us. If you have

comments about this document, please send them

to [email protected]

Document No. CC1N7636us

Country of Origin: DE

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