Watts 912HP - Manual

For Non-Health Hazard Applications
ES-912HP
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912HP
Patent #6,397,878
May also be installed vertically
Series 912HP
High Pressure Hose Drop
Backflow Preventers
Sizes: 3 ⁄
4
", 1" (20, 25mm)
Series 912HP High Pressure Hose Drop Backflow Preventers are
specifically made for isolation protection on high pressure plumbing
supply lines, such as high pressure hose drops which are used for
the washdown of equipment and facilities. Ideally suited for food
processing plants, series 912HP provides backsiphonage and
backpressure backflow protection to prevent the reverse flow of
potentially contaminated water from the processing and rendering
areas into the potable water supply. Series 912HP safeguards the
water supply, thus ensuring the water is safe to drink and is safe for
use in processing the meat within the facility.
The assembly is designed for non-health hazard applications and
may be used where continuous pressure conditions exist. The valve
incorporates the use of a bronze ball valve shutoff on the inlet of the
assembly and a dual check with atmospheric vent specifically
designed to handle the temperature and pressure conditions com-
monly found in the meat processing industry. Female inlet and male
outlet connections. Sizes:
3 ⁄
4
" (20mm) and 1"(25mm). Drain is 1 ⁄
2
"
(15mm) threaded connection.
Features
• All bronze ball valve and brass backflow preventer
• Designed for maximum working pressure of 400psi (28 bars)
• Female national pipe thread inlet connection and male national
pipe thread outlet connection
• Ball valve design includes reinforced/enhanced PTFE seats and
electroless nickel plated brass ball, blow-out proof pressure
retaining stem, and low profile oval handle.
• In the event of fouling of the downstream check valve, leakage
would be vented to atmosphere thereby providing a visual
indication of failure of the check assembly.
• Can be installed vertically (flow up or flow down) or horizontally.
• Integral stainless steel screen protects the check assemblies from
fouling due to dirt and debris.
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.
Specifications
A High Pressure Hose Drop Backflow Preventer shall be installed
on all hose drops to provide protection against backpressure and
backsiphonage backflow. The high pressure hose drop backflow
preventer shall consist of a ball valve of 2-piece construction with a
ASTM B-584 bronze body, ASTM B-16 or B-124 ENP brass ball,
Durafill
® or Uniseal seats, Teflon ® stem packing, blow-out proof
stem, and low profile oval handle. The assembly shall also include a
dual check with atmospheric vent consisting of a primary check
valve utilizing a rubber disc setting against a mating rubber part to
ensure tight sealing. The secondary check shall utilize a Teflon
® disc
to provide protection against backpressure. The backflow preventer
body shall be of brass construction with a brass male tail piece and
integral stainless steel strainer. The assembly shall be rated at a
maximum working pressure of 400psi (28 bars) and a maximum
temperature of 180°F (75°C). The high pressure hose drop back-
flow preventer shall be a Watts Regulator Company Series 912HP.
Teflon ® is a registered trademark of E.I. DuPont DeNemours & Co., Inc.
Durafill ® is a registered trademark of Cargill, Limited.
Flow
Ball Valve Shutoff
First Check
Second Check
Vent and Drain
Connection
Integral Stainless
Steel Screen
Union Male Outlet
Connection