Watts 008QT - Manual

Job Name _________________________________________ Contractor _______________________________________________
Job Location _______________________________________ Approval _________________________________________________
Engineer __________________________________________ Contractor P.O. No. ________________________________________
Approval __________________________________________ Representative ____________________________________________
Series 008QT
High Hazard Backflow
Preventer
Anti-Siphon, Spill-Resistant
Designed for indoor point of use applications to prevent back-sipho-
nage of contaminated water back into the potable water supply.
Separation of the water supply from the air inlet is accomplished by
means of a diaphragm seal. This feature protects against any spill-
age during start-up or operation.
SIZES
3 ⁄
8
", 1 ⁄
2
", 3 ⁄
4
" and 1" (10, 15, 20, 25mm)
FEATURES
● Standardly supplied with Tee handles
●
Available less Tee handle with stem wrench
flats. For use where space is limited
● Available in left-handed or right-handed outlet
●
Patented design
● Spill-resistant design for indoor use
●
Affordable design
● Modular cartridge for ease of service
●
Vent uses an o-ring for reliable operation
● Bronze body for durability
●
Compact space saving design
● ASSE 1056
● IAPMO Classified
INSTALLATION
The SVB is designed to be installed at the point of use. When factory
installed deck/machine mounted on machines or equipment, the
critical level of the SVB shall be not less than 1" (25mm) above the
flood rim. If field applied for general plumbing applications, the criti-
cal level of the SVB shall be a minimum of 6" above the flood rim.
SPECIFICATIONS
A spill-resistant vacuum breaker (SVB) shall be installed, in accor-
dance with the manufacturer's instructions, as noted on the plans.
The valve shall consist of a one piece modular check and float as-
sembly made of engineered thermoplastic and housed in a bronze
body. Springs shall be stainless steel. The valve shall be constructed
with a molded diaphragm separating the air inlet from the potable
water supply to prevent spillage. The valve shall be a Watts SVB Se-
ries 008QT.
ES-008QT
ASSE 1056
IAPMO Classfied
008QT-L (Left-Handed) 008QT (Right-Handed)
Hood Screws
(2 Req'd)
Hood
Bonnet Vent
Spring
Hood Screw
O-ring
Vent O-ring
Hood
Bonnet
Vent
Spring
Test Cock
Retainer
Check
Assembly
Body
Shutoff
Valve Assy.
(2 Req'd)
Air Bleed Screw
Bleed O-ring
(not shown)
Test Cock
Retainer
Check
Assembly
Body
Vent
O-ring
O-ring
Size: 3 ⁄
8
", 1 ⁄
2
"
(10, 15mm)
Size: 3 ⁄
4
", 1"
(20, 25mm)
Patent # 5125429
FOR INDOOR USE!
Size 3 ⁄
4
", 1"
(20, 25mm) shown
Watts product specifications in U.S. customary units and metric are
approximate and are provided for reference only. For precise measure-
ments, 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 previ-
ously or subsequently sold.