Watts LF8 - Manual

For Health Hazard Applications
ES-LF8
Series LF8
Hose Connection Vacuum
Breakers
Size: 3 ⁄
4
" hose thread
Series LF8 is a line of unique vacuum breakers specially made to
permit the attachment of portable hoses to hose thread faucets.
Designed to prevent the flow of contaminated water back into the
potable water supply, these devices require no plumbing changes
and screw directly onto sill cocks. The Series LF8 features Lead
Free* construction to comply with Lead Free* installation require-
ments.
Series LF8 can be used on a wide variety of installations, such as
service sinks, swimming pools, photo developing tanks, laundry
tubs, wash racks, dairy barns, marinas and general outside gar-
dening uses.
Features
• Copper silion alloy body (all models except 8P, which is plastic)
• Stainless steel working parts for longevity
• Durable rubber diaphragm and disc for
consistent positive seating
Models
LF8A - Furnished with exclusive “Non-Removable” feature and
standardly equipped to allow sill cock to be drained.
NOTICE
Device should only be installed on approved sill cocks
containing at least four full threads. Non-removable
once installed.
LF8 - Similar to the 8A except it is furnished without the
“Non-Removable” or draining feature. Secured with Allen
head set screw.
LF8B - Furnished with break-away set screw to provide a
tamper-resistant installation. Standardly equipped to allow
sill cock to be drained.
LFNF8 - Especially made for wall and yard hydrants. Permits man-
ual draining for freezing conditions.
8P - Furnished with exclusive patented “Non-Removable”
feature. Standardly equipped to allow sill cock to be drained.
Constructed of durable, corrosion-resistant, reinforced
thermoplastic. Tamper-proof feature.
LF8AC, LF8C or LF8BC - Same as above but furnished
with chrome finish.
LF8FR - With freeze relief feature.
Series LF8 is tested and certified under ANSI A112.1.3
(ASSE 1011), which precludes use under continuous pressure.
This valve should only be used in areas where spillage of
water will not cause damage.
Inlet Connection: 3 ⁄
4
" standard female hose thread
Outlet Connection: 3 ⁄
4
" standard male hose thread
Maximum Pressure: 125psi (8.6 bar)
Maximum Temperature: 180°F (82°C)
For backflow preventers for tub and shower hand spray sets,
request literature ES-S8.
Specifications
A hose connection type anti-siphon vacuum breaker shall be
installed where indicated on the plans to prevent the backsiphon-
age of contaminated water. Lead Free* hose connection vacuum
breaker shall be constructed using Lead Free* materials. Lead Free
vacuum breaker shall comply with state codes and standards,
where applicable, requiring reduced lead content. This device is not
to be used under continuous pressure or where there is a possibil-
ity that a backpressure condition may develop. This device shall
meet the requirements of ANSI A112.1.3, ASSE Standard 1011.
Vacuum breaker shall be a Watts Series LF8.
8P
Tamper-Proof Feature
LFNF8
Permits Manual Drain
LF8A
Non-Removable Model
LF8
LF8FR
LF8B
LEAD FREE
*
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
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.
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
NOTICE