Watts B911S User Manual

4 (1)
Watts B911S User Manual

ES-911

For Residential and Commercial Applications

Job Name

–––––––––––––––––––––––––––––––––––––––––––

Contractor

––––––––––––––––––––––––––––––––––––––––––––

Job Location –––––––––––––––––––––––––––––––––––––––––

Approval

–––––––––––––––––––––––––––––––––––––––––––––

Engineer

–––––––––––––––––––––––––––––––––––––––––––––

Contractor’s P.O. No. –––––––––––––––––––––––––––––––––––

Approval

–––––––––––––––––––––––––––––––––––––––––––––

Representative ––––––––––––––––––––––––––––––––––––––––

 

 

 

 

Series 911

Combination Fill Valve and

Backflow Preventer

Size: 12" (15mm)

Series 911 combination fill valve and backflow preventer consists of a Model 9D backflow preventer and Model 1156F feed water pressure regulator in one pre-assembled unit. This valve is designed for use on boiler feed lines to provide make-up water to the boiler and prevent backflow when supply pressure fails below system pressure.

Features

911

Pre-assembled for ease of installation

Easy service accessibility

High capacity fill valve for quick system filling and purging

Models

911 – union NPT x NPT connections

911S – union solder x NPT connections

B911 – all bronze body construction union NPT x NPT connections

B911S – all bronze body construction union solder x NPT connections

Specifications

A combination fill valve and backflow preventer shall be installed on the boiler feed line to provide make-up water to the boiler. The valve shall contain a Watts Regulator Model 9D backflow preventer and Model 1156 feed water pressure regulator. The combination fill valve and backflow preventer shall be a Watts Regulator Company Series 911.

Pressure – Temperature

Maximum Temperature: 212°F (100°C) Maximum Working Pressure: 100psi (6.9 bars)

Adjustment Range: 10-25psi (68.7 – 172.4 kPa) set at 15psi (103.4 kPa)

Options

add suffix:

S – 12" (15mm) union solder inlet x 12" (15mm) threaded outlet

Dimensions — Weights

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODEL

SIZE (DN)

 

 

DIMENSIONS

 

 

 

 

 

 

 

WEIGHT

 

 

 

 

 

 

A

 

B

 

 

 

 

 

 

in.

 

mm

in.

 

 

mm

in.

 

mm

 

lbs.

 

kgs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

911

12

 

15

812

 

216

514

 

133

 

4.2

 

1.9

911S

12

 

15

812

 

216

514

 

133

 

4.2

 

1.9

B911

12

 

15

812

 

216

514

 

133

 

4.2

 

1.9

B911S

12

 

15

812

 

216

514

 

133

 

4.2

 

1.9

add prefix:

B – bronze body regulator

USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.wattsreg.com

Canada: 5435 North Service Rd., Burlington, ONT L7L 5H7; www.wattscda.com

Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

ES-911 0329

©Watts Regulator Company, 2003

Printed in U.S.A.

Loading...