Simplicity 909 Manuel d'utilisateur télécharger pdf

For Health Hazard Applications

ES-909RPDA

Job Name

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

Contractor

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

Job Location

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

Approval

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

Engineer

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

Contractor’s P.O. No.

–––––––––––––––––––––––––––––––––––

Approval

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

Representative

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

Series 909RPDA

Reduced Pressure Detector

Assemblies

Sizes: 2

⁄2" – 10" (65 – 250mm)

Series 909RPDA Reduced Pressure Detector Assemblies are used in health

hazard applications and are designed exclusively for use in accordance with

water utility authority containment requirements. It is mandatory to prevent

the reverse flow of fire protection system substances, i.e., glycerin wetting

agents, stagnant water and water of non-potable quality from being pumped

or siphoned into the potable water line.

Benefits: Detects leaks ...with emphasis on the cost of unaccountable water;

incorporates a meter which allow the water utility to:

• detect leaks that historically create great annual cost due to waste

• provide a detection point for unauthorized use. It can help locate illegal taps

Modular check design concept facilitates maintenance and assembly access.

All sizes are standardly equipped with AWWA epoxy coated, UL/FM listed OSY

resilient seated gate valves, CFM (cubic feet per minute) or GPM (gallon per

minute) meter and ball type test cocks. A pressure differential relief valve is

located in a zone between the check valves.

Modular Design

Features a modular design concept which facilitates maintenance and

assembly access. All sizes are standardly equipped with gate valves and ball

type test cocks.

Features

• Body construction fused epoxy coated cast iron

• Replaceable bronze seats

• Maximum flow at low pressure drop

• Compact for economy combined with performance

• Design simplicity for easy maintenance

• Furnished with

⁄8" x

⁄4" (16 x 19mm) meter

• Air-in/Water-out relief valve design provides maximum capacity during

emergency conditions.

• No special tools required

Specifications

A Reduced Pressure Detector Assembly shall be installed on fire protection

systems when connected to a public water supply. Degree of hazard present

is determined by the local authority having jurisdiction. The unit shall be a

complete assembly including UL listed and FM approved OSY shutoff valves.

Including an auxiliary line consisting of an approved backflow preventer and

water meter. The assembly shall meet the requirements of AWWA C511-92;

ASSE 1047; UL Classified File No. EX3185; CSA B64 and USC Manual 8th.

Edition. Assembly shall be a Watts Regulator Company Series 909RPDA.

909RPDAOSY

Relief Valve

First

Check

Assembly

Second

Check

Assembly

IMPORTANT: INQUIRE WITH GOVERNING AUTHORITIES

FOR LOCAL INSTALLATION REQUIREMENTS

Now Available

WattsBox Insulated Enclosures.

For more information, send for literature ES-WB.

How it operates

The unique relief valve construction incorporates two channels: one for air,

one for water. When the relief valve opens, as in the accompanying air-

in/water-out diagram, the right-hand channel admits air to the top of the

reduced pressure zone, relieving the zone vacuum. The channel on the left

then drains the zone to atmosphere. Therefore, if both check valves foul, and

simultaneous negative supply and positive backpressure develops, the relief

valve uses the air-in/water-out principle to stop potential backflow.

Relief Valve Seat

Relief Valve Piston

Relief Valve

Piston Assembly

Wiper Seal

Bottom Plug

Spring Assembly

Water Air

Out In

Pipe Line

Center

Relief Valve

Body Flange

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 with-

out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

ES-909RPDA.qxd 3/2/10 1:43 PM Page 1

1 2 3 4

Résumé du contenu

Page 1 - Series 909RPDA

For Health Hazard ApplicationsES-909RPDAJob Name ––––––––––––––––––––––––––––––––––––––––––––Contractor ––––––––––––––––––––––––––––––––––––––––––––Jo

Page 2

StandardsAWWA C511-92; CSA B64USC Manual for Cross-connection Control, 8th EditionApprovalsApproved by the foundation for Cross-Connection Control and

Page 3 - 1710 1900 2090 2280 lpm

3Capacity*Typical maximum flow rate (7.5 feet/sec.) **UL rated flow21⁄2" (65mm)0 20 40 60 80 100 120 140 160 180 200 220 240 gpm0 76 152 228 304

Page 4