Specifications.pdf

Rev. S Date: 5/23 Document No. ACV-ZW209 Product No. Model ZW209 Patent zurn.com/patents

Model ZW209 Pressure Reducing Valve

Zurn Industries, LLC | Wilkins 1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766 In Canada | Zurn Industries Limited 7900 Goreway Drive, Unit 10, Brampton, Ontario L6T 5W6, 877-892-5216 www.zurn.com

BODY CONFIGURATIONS GLOBE STYLE BODY ANGLE

STYLE

BODY

END

CONNECTION

PRESSURE RATING

FULL

PORT

REDUCED

PORT

Threaded 400 psi max. 1 1/4"-3" n/a 1 1/4"-3"

Flanged ANSI Class 150, 250 psi max.

1 1/2"-16" 3"-10" 1 1/2"-10" ANSI Class 300, 400 psi max.

Grooved 300 psi max. 1 1/2"-10" n/a 1 1/2"-10"

MINIMUM INLET PRESSURE 10 PSI

Standard Features

Options (Add suffix letters to ZW209) Function

Body

Connections

Main Valve Options

Pilot System

DIRECTION OF FLOW

Application The Zurn Wilkins Model ZW209 Pilot Operated Pressure Reducing Valve is designed for many applications where the reduction of high inlet pressures to safe and stable outlet pressure is required. The pilot assembly reacts to changes in downstream pressure allowing the main valve to modulate between the closed and open position ensuring a constant downstream set pressure. Once the downstream pres-sure reaches the pilot setting, the main valve will seal shut preventing damage downstream. Pressure regulation is not dependent upon flow rate, resulting in minimal pressure loss through the valve. In addition the Model ZW209 comes stan-dard with epoxy coating internally and externally for corrosion protection, as well as isolation valves and pressures gauges for quick and easy maintenance or repair.

Standards Compliance:

*(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

Materials

*The closing speed control (optional) on this valve should always be open at least three (3) turns off its seat.

Schematic Diagram

NSF/ANSI/CAN 61

Zurn Industries, LLC | Wilkins 1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766 In Canada | Zurn Industries Limited 7900 Goreway Drive, Unit 10, Brampton, Ontario L6T 5W6, 877-892-5216 www.zurn.com

Globe and Angle Main Valve Dimensions

DIM FULL PORT

VALVE SIZE INCHES (mm)

1 1/4 (32) 1 1/2(38) 2 (50) 2 1/2 (65) 3 (80) 4 (100) 6 (150) 8 (200) 10 (250) 12 (300) 14 (350) 16 (400)

A

Threaded 7 1/4 7 1/4 9 7/16 11 12 1/2

Class 150 Flange 8 1/2 9 3/8 11 12 15 20 25 3/8 29 3/4 34 39 41 3/8

Class 300 Flange 9 10 11 5/8 13 1/4 15 5/8 21 26 7/16 31 1/8 35 1/2 40 1/2 43 1/2

Grooved 8 1/2 9 11 12 1/2 15 20 25 3/8 29 3/4

B Diameter 5 5/8 5 5/8 6 3/4 8 9 3/16 11 11/16 15 3/4 20 1/8 23 11/16 27 1/2 31 3/4 34 1/2

C Max. 5 3/4 5 3/4 6 3/16 7 3/8 8 10 3/16 12 5/16 15 9/16 17 5/8 20 3/16 22 13/16 25 7/8

D Threaded/Grooved 1 3/8 1 3/8 1 3/4 2 1/8 2 9/16 3 7/16 5 5 5 13/16 6 3/4 8 7/8 8 13/16

Class 150 Flange 2 1/2 3 3 1/2 3 3/4 4 1/2 5 1/2 6 3/4 8 9 1/2 10 1/2 11 3/4

Class 300 Flange 3 3 1/4 3 3/4 4 1/8 5 6 1/4 7 1/2 8 3/4 10 1/4 11 1/2 12 3/4

E NPT Body Tap 3/8 3/8 3/8 1/2 1/2 3/4 3/4 1 1 1 1 1

F NPT Cvr. Plug Tap 1/2 1/2 1/2 1/2 1/2 3/4 3/4 1 1 1 1 1

G NPT Cover Tap 3/8 3/8 3/8 1/2 1/2 3/4 3/4 1 1 1 1 1

H

Threaded 3 1/4 3 1/4 4 3/4 5 1/2 6 1/4

Class 150 Flange 4 4 3/4 5 1/2 6 7 1/2 10 12 11/16 14 7/8

Class 300 Flange 4 1/4 5 6 6 7/16 8 10 1/2 13 1/4 15 9/16

Grooved 4 7/16 4 3/4 5 1/2 6 7 1/2 10 12 11/16 14 7/8

J

Threaded 1 15/16 1 15/16 3 1/4 4 4 1/2

Class 150 Flange 4 3 1/4 4 4 5 6 8 8 5/8

Class 300 Flange 4 1/4 3 1/2 4 5/16 4 7/16 5 5/16 6 1/2 8 1/2 9 5 /16

Grooved 3 3/16 3 1/4 4 4 1/4 5 6 8 8 5/8

Valve Stem Internal Thread 10-32 10-32 10-32 10-32 1/4-20 1/4-20 1/4-20 3/8-16 3/8-16 3/8-16 3/8/16 3/8-16 Stem Travel (in) 7/16 7/16 3/4 7/8 1 1 3/16 1 3/4 2 3/8 2 13/16 3 7/16 3 13/16 4 5/16

Approx. Wt. (lbs) 22 26 36 55 70 130 240 440 720 820 1200 1550

B

C

F G

B

C

E A

D

B

GF

J

H

DIM

VALVE SIZE INCHES (mm)

3" (80) 4" (100) 6" (150) 8" (200) 10"

(250)

A Class 150 Flange 10 1/4 14 17 3/4 21 7/16 26

Class 300 Flange 11 14 1/2 18 11/16 22 7/16 27 7/16

B Dia 6 3/4 9 3/16 11 11/16 15 3/4 20 1/8

C Max 6 3/8 8 7/16 12 5/16 13 1/4 16 3/4

D Class 150 Flange 3 3/4 4 1/2 5 1/2 6 3/4 8

Class 300 Flange 4 1/8 5 6 1/4 7 1/2 8 3/4

E NPT Body Tap 3/8 1/2 3/4 3/4 1

F NPT Cvr. Plug Tap 3/8 1/2 3/4 3/4 1

G NPT Cvr. Tap 3/8 1/2 3/4 3/4 1

Valve Stem Internal Thread 10-32 1/4-20 1/4-20 3/8-16 3/8-16

Stem Travel (in) 3/4 1 1 1/5 1 3/4 2 3/8

Approx. Wt. (Lbs) 35 80 140 275 480

Reduced Port Main Valve Dimensions

A

C

B

D

E

B F

G

Reduced Port Body

Angle Style BodyGlobe Style Body

PILOT SYSTEM

DIMENSIONS VALVE SIZE INCHES (mm)

DIM 1-1/4

(32)

1-1/2 (40)

2" (50)

2-1/2" (65)

3" (80)

4" (100)

6" (150)

8" (200)

10" (250)

12" (300)

14" (350)

16" (400)

Full Port Body

X 8 1/2 8 1/2 8 1/2 8 1/2 9 1/2 12 13 14 17 1/2 20 23 26

Y 4 4 3 1/2 4 4 1/2 6 8 10 12 14 16 17 1/2

Z 8 1/2 8 1/2 9 9 9 1/2 10 11 1/2 13 14 1/2 17 19 20 1/2

Reduced Port Body

X 8 1/2 9 1/2 12 13 14

Y 3 1/2 4 1/2 6 8 10

Z 9 9 1/2 10 11 1/2 13

Angle Body

X 9 9 9 9 10 12 1/2 13 1/2 14 1/2 18

Y 5 5 5 5 5 6 8 10 12

Z 9 9 9 1/2 9 1/2 10 10 1/2 12 13 1/2 15

Angle Pilot System Dimensions

Globe Pilot System Dimensions

Pilot System Dimensions Y

Z

X

INLET

Z

X

Y

1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766 In Canada | Zurn Industries Limited 7900 Goreway Drive, Unit 10, Brampton, Ontario L6T 5W6, 877-892-5216 www.zurn.com

Suggested flow calculations are based on flow through Schedule 40 Pipe. Maximum continuous flow is approx. 20 ft./sec (6.1 meters/sec) & maximum intermittent is approx. 25 ft./sec (7.6 meters/sec) and minimum continuous flow is approx. 1.25 ft./sec (0.4 meters/sec). Many factors should be considered in sizing pressure reducing valves including inlet pressure, outlet pres-sure and flow rates.

Notice:

In cases where design flow falls below the minimum continuous flow rate, a low flow by-pass shall be installed.

Operation The Model ZW209 utilizes a pressure reducing pilot valve that installs on the discharge side of the control circuitry. The pilot is a direct acting, normally open, spring loaded, diaphragm actuated valve. The operation of the ZW209 begins with accurately sizing the valve, then fine tuning the control circuit by adjusting the pilot spring to the desired downstream pressure.

Inlet pressure is piped to the inlet port of the pressure reducing pilot. A sensing line runs internally from the discharge side of the pilot to its lower control chamber under the diaphragm. Thus, downstream pressure exceeding the preset acts to close the pilot while the adjustable spring seeks to keep it open. The result is a modulating action in the pilot that is transmitted to the bonnet of the main valve. This creates a mirror modulation of the diaphragm assembly in the main valve. Downstream pres-sure is maintained within narrow limits regardless of changing flow rates or varying inlet pressures.

Typical Installation

Caution: The recommended installation orientation for ACVs is horizontal, with the valve cover up. 6” and larger valves should only be installed horizontally, with the valve cover up, due to the difficulty of properly bleeding air out of the cover and perform-ing maintenance on valves installed in the vertical orientation.

Specifications The Pressure Reducing Valve shall be a diaphragm actuated, pilot controlled valve. The main valve body shall be ductile iron ASTM A 536. The stem of the basic valve shall be guided top and bottom. The diaphragm shall not be used as a seating surface.

All internal and external ferrous surfaces shall be coated with a high quality, fusion epoxy coating. The pilot control shall be field adjustable from 15 psi to 120 psi. The valve shall be certified to NSF/ANSI/CAN Standard 61. The Pressure Reducing Valve shall be a ZURN WILKINS Model ZW209.

DIRECTION OF FLOW

INLET SHUT-OFF OUTLET SHUT-OFF

INLET SHUT-OFF OUTLET SHUT-OFF

ZW209BP

ZW209

Full Port Globe and

Angle Valve size inches (mm)

1 1/4 (32)

1 1/2 (40)

(50)

2 1/2 (65)

(80)

(100)

(150)

(200)

(250)

(300)

(350)

(400)

Reduced Port Globe Valve Size inches (mm)

(80)

(100)

(150)

(200)

(250)

Suggested Flow

(GPM)

Max. Continuous 93 125 210 300 460 800 1800 3100 4900 7000 8400 11000

Max Intermittent 120 160 260 375 600 1000 2250 4000 6150 8700 10500 13800

Min. Continuous 10 10 15 20 30 50 115 200 300 435 530 690

Suggested Flow (Liters/sec)

Max. Continuous 6 8 13 19 29 50 113 195 309 550 665 870

Max. Intermittent 7.6 10 16.4 23 37 62 142 246 388 440 530 95

Min. Continuous .6 .6 0.9 1.3 1.9 3.2 7.2 13 19 28 33 43

Flow Characteristics

Job Name Contractor

Job Location Engineer

1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766 In Canada | Zurn Industries Limited 7900 Goreway Drive, Unit 10, Brampton, Ontario L6T 5W6, 877-892-5216 www.zurn.com

Flow Characteristics

10 100 1000 10000

PR

ES

SU

RE

D

RO

P (P

SI

FLOW (GPM)

BODY MINIMUM FRICTION LOSS

1- 1/

4" G lo be

A ng le

1- 1/

2" A ng le

1- 1/

2" G lo be

2" G lob e

2" A ng le

2- 1/

2" G lob e

2- 1/

2" A ng le

3" A ng le

4" G lob e

& A ng le

6" A ng le

8" A ng le6"

G lob e

8" G lob e

3" G lo be

" A ng le

" G lob e

" G lob e

" G lob e

" G lob e

* Notes for Body Minimum Friction Loss Chart:

Minimum inlet pressure is 10 psi higher than set point or the additional body friction loss intended flow, whichever is higher.

(friction loss may be important at flows above 20 ft/s) Example: A 6" valve intended to flow 2000 GPM at 120 psi has a friction loss of 20 psi at 2000 GPM. The minimum inlet pres-sure would be 120 + 20 = 140 psi. When inlet pressure is below set point, the outlet pressure will be the pressure at the inlet minus the friction loss.

Notes for Pressure Reduction Limit Chart: Determine if the outlet reduced flowing pressure is within the safe operating zone for your Zurn Automatic Control Valve. First, find the system inlet pressure on the left axis and draw a horizontal line from that point across the chart. Then find the outlet reduced flowing pressure on the bottom axis and draw a vertical line up to where it meets the first line. The point where the lines intersect should be in the green “Safe Continuous Operating Zone” below and to the right of the yellow “Noise Zone”. If the operating point is in the area labeled “Noise Zone” or “Cavitation Damage Zone”, the valve seal ring, plunger, or body may be damaged. The lifespan of the valve will be reduced. Damage from cavitation to internal components may cause high pressure downstream and/or external leaks. To move out of the cavitation or noise zone you will need to place two valves in series in order to safely reduce pressure. Use the chart to pick an intermediate pressure in the green zone that you will set the first valve in series to. The intermediate pressure you pick will then become the inlet pressure for the 2nd valve and you can verify it will be in the green zone using the chart.

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170

IN

LE

T

PR

ES

SU

R E

(P

SI

OUTLET PRESSURE (PSI)

PRESSURE REDUCTION LIMIT WATERWORKS PRESSURE REDUCTION LIMIT CHART

Safe Continuous Operating Zone

Noise Zone

Cavitation Damage Zone

(Do not Operate)