Watts LF288A-DM - Manual

Series LF288A-DM
(Deck/Equipment Mounted)
Hot or Cold Water Anti-Siphon
Vacuum Breakers
Sizes: 1 ⁄
2
" (15mm)
Series LF288A-DM represents a complete line of vacuum
breakers designed to prevent backsiphonage of contaminated
water into a potable water supply.
They feature a lightweight, durable “disc float" suitable for
temperatures up to 180°F (82°C) which closes the atmospheric
vent to prevent spilling under all rates of flow. Therefore, they
are ideally recommended for low flow installations such as
laboratory equipment which use such a small amount of water.
They also contain a durable silicone disc which has high heat
and water hammer shock resistance and assures tight seating
with the lightest of seating contact. The LF288A-DM features
Lead Free* construction to comply with Lead Free* installation
requirements.
Full Size Orifice - Series LF288A-DM has a full-size orifice to
assure pipe size capacity. Water passages are streamlined to
provide high water flow with minimal pressure loss.
Features
• Lead Free* Brass Body
• Full size orifice for maximum flow
• Lightweight disc assembly prevents spilling under all
rates of flow
Models
LF288A-DM with Lead Free* brass body
LF288AC-DM with Lead Free* brass body and polished
chrome finish
Specifications
For Anti-Siphon Vacuum Breakers
An atmospheric type anti-siphon vacuum breaker shall be in-
stalled where indicated on the plans to prevent the backsiphon-
age of contaminated water. Device shall include lightweight
disc float with silicone disc for tight seating. The device may be
installed 1" or higher above the highest point of downstream
piping. This device is not to be used under continuous pressure
or where there is a possibility that a backpressure condition
may develop. The (Deck/Equipment Mounted) Hot or Cold Wa-
ter Anti-Siphon Vacuum Breakers shall be constructed using
Lead Free* materials. Lead Free* (Deck/Equipment Mounted)
Hot or Cold Water Anti-Siphon Vacuum Breakers shall comply
with state codes and standards, where applicable, requiring
reduced lead content. The device shall meet the requirements
of ASSE Standard 1001, ANSI A112.1.1 and CSA B64 and
shall be a Watts Series 288A-DM.
For Health Hazard Applications
ES-LF288A-DM
1 /
2
" (15mm) LF288A-DM
Center Stem Guide
for accurate seating
Disc has high heat
and water hammer
shock resistance
Disc Float
durable and light-
weight, closes vent
with minimum flow
Full Size Orifice
assures pipe
size capacity
Since atmospheric type vacuum breakers are subject to normal main-
tenance and replacement, they should be located where emergency
water spillage will create no problem and where they can be accessible
for inspection or servicing.
This device shall not be subjected to continuous pressure for more
than twelve (12) hours per ASSE Std. 1001. For continuous pressure
application, specify Watts Series LF800 pressure type vacuum break-
ers. Vacuum breakers are not designed, tested or approved to protect
against backpressure backflow. For protection against backpressure
backflow, install Watts Series LF909 or Series LF009 reduced pressure
principle backflow preventers.
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
LEAD FREE
*
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
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.
NOTICE