Watts SC8 User Manual

For Health Hazard Applications

ES-SC8

Job Name

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

Contractor

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

Job Location

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

Approval

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

Engineer

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

Contractor’s P.O. No.

––––––––––––––––––––––––––––––––––

Approval

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

Representative

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

Series SC8

Cast Brass Hose Bibbs

with Separate Tamper-proof Vacuum Breaker

Watts offers six styles of hose bibbs which are supplied with separate vacuum breaker to be attached to the hose bibb after hose bibb installation. Once the vacuum breaker is properly installed to the hose bibb it is tamper-proof. This provides backsiphonage protection for po-table hoses connected to hose thread faucets. Garden hoses are an extension of the plumbing system and have been known to cause illness or death when unprotected in uses such as with chemical sprayers, flushing of tanks or pipes, or the filling of pools.

Models

SC8-1 No kink faucet, 1⁄2" male NPT or copper sweat

connection with vacuum breaker.

SC8-2 No kink hose faucet,

⁄4" copper sweat

connection with vacuum breaker.

SC8-3 Lawn faucet,

⁄2" or 3⁄4" regular pattern, dual

sweat connection with vacuum breaker.

SC8-4 Lawn faucet,

⁄4" female NPT regular pattern

with vacuum breaker.

SC8-5 Hose bibb hex shoulder,

⁄2" male NPT

with tee handle and vacuum breaker.

SC8-6 Hose bibb hex shoulder,

⁄4" male NPT

with tee handle and vacuum breaker.

Features

• Backflow backsiphonage protection

• Separate non-removable vacuum breaker (with break-away screw)

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.

Cast Iron

Handwheel

SC8-1

SC8-2

SC8-3

SC8-4

SC8-5

SC8-6

Adjustable

Packing Nut

Tamper-proof

Vacuum Breaker

Break-away

Screw

Vacuum Breaker

Attached After Hose

Bibb Installation

Drainage

Feature

Standards

Tamper-proof vacuum breaker (Watts Model 8B) is tested and approved in conformance with Standard 1011 of the American Society of Sanitary Engineers and by all principal cities, states and areas having these requirements.

IAPMO Uniform Plumbing Code

How it Works

Series SC8 is a combination hose bibb with separate tamperproof vacuum breaker - to be attached after installation. Under normal conditions, the inner diaphragm opens to permit generous flow, while the circumferential diaphragm closes the air vents.

Should supply pressure drop and a backflow begin, the inner diaphragm immediately closes to prevent backflow into the main line, while the circumferential diaphragm opens the air vents to break the vacuum.

bars psi

2.8 40

2.4 35

2.1 30

1.7 25

1.4 20

1.0 15

.7 10

.3 5

012 345678910gpm 0 3.8 7.6 11 15 19 23 27 30 34 38 lpm

Flow

Supply Pressure

Performance Curve

Capacity

Dimensions

MODEL ORDER NO. SIZE (DN) DESCRIPTION DIMENSIONS WEIGHTi

ABC

in. mm. in. mm. in. mm. lbs. kgs.

NO KINK HOSE FAUCET with tee handle and vacuum breaker SC8-1 611150

⁄2" 15 Male I.P. or Copper Connection 31⁄8"79 21⁄2"64 21⁄4" 57 .75 .34

SC8-2 611250

⁄4" 20 Copper Connection 31⁄8"79 21⁄2"64 21⁄4" 57 .75 .34 LAWN FAUCET (Sillcock) with cast iron handwheel and vacuum breaker SC8-3 6113501⁄2" or 3⁄4" 15 or 20 Regular Pattern, Dual Connections 31⁄4"83 21⁄2"64 21⁄4" 57 .75 .34 SC8-4 611450

⁄4" 20 I.P. Regular Pattern 31⁄4"83 21⁄2"64 21⁄4" 57 .75 .34 HOSE BIBB HEX SHOULDER with tee handle SC8-5 611550

⁄2" 15 I.P. Inlet Hose End 35⁄8" 92 2 51 21⁄4" 57 .75 .34 SC8-6 611650

⁄4" 20 I.P. Inlet Hose End 33⁄4" 95 2 51 21⁄4" 57 .75 .34 Note: Models SC8-1 through SC8-5 are packaged with the Model 8B vacuum breaker with break-away set screw. The SC8-6 model is packaged with the Model 8 which has an allen head set screw.

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

Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca