Watts LF288A - Manual

Series LF288A
Hot or Cold Water Anti-Siphon
Vacuum Breakers
Sizes: 1 ⁄
4
" - 3" (8-80mm)
Series LF288A 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 tem-
peratures 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 equip-
ment 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 Features Lead Free* construction to
comply with Lead Free* installation requirements.
Full Size Orifice - Series LF288A has a full-size orifice to assure
pipe size capacity. Water passages are streamlined to provide
high water flow with minimal pressure loss.
For bottom/inlet and outlet connection type vacuum breakers
1 ⁄
4
",
3 ⁄
8
" (8, 10mm) size, refer to ES-LFN388.
Features
• Lead Free* Brass Body
• Full size orifice for maximum flow
• Lightweight disc assembly prevents spilling under all rates
of flow
Models
LF288A 1 /
4
" – 3 /
4
" (8 – 20mm) with Lead Free* brass body
LF288A-C 1 /
4
" – 3 /
4
" (8 – 20mm) with Lead Free* brass body
and polished chrome finish
LF288AM4 1" (25mm)
LF288AM2 1
1 /
4
" – 3" (32 - 80mm)
Specifications
For Anti-Siphon Vacuum Breakers
An atmospheric type anti-siphon vacuum breaker shall be installed
where indicated on the plans to prevent the backsiphonage of
contaminated water. Device shall include lightweight disc float with
silicone disc for tight seating. This device
is not to be used under continuous pressure or where there is a
possibility that a backpressure condition may develop. The Hot or
Cold Water Anti-Siphon Vacuum Breakers shall be constructed
using Lead Free* materials. Lead Free* 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 LF288A.
For Health Hazard Applications
ES-LF288A
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.
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
LEAD FREE
*
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
1 /
2
" (15mm) LF288A
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