For Non-Health Hazard Applications
ES-SS007
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SS007QT
Series SS007
Stainless Steel Double Check
Valve Assemblies
Sizes:
1
⁄2" – 1" (15 – 25mm)
Series SS007QT Stainless Steel Double Check Valve Assemblies
provide protection of the potable water supply for non-health haz-
ard cross-connections. Only those cross-connections identified by
local inspection authorities as non-health hazard shall be allowed
the use of an approved double check valve assembly. This series
should be used when the downstream liquid is of a composition
where bronze material would be damaged or if it is desirable to
eliminate trace elements of lead and copper. Typical low hazard
installations may be found in industrial or chemical plant use, pulp
and paper industry, hospitals and corrosive atmospheres. The
LFSS007 features Lead Free* construction to comply with Lead
Free* installation requirements.
Features
• Investment Cast 316 Stainless Steel Assembly for
corrosion resistance.
• All wetted valve components - test cocks, ball valve shutoffs,
pipe nipples, body and cover, and check modules are made
from "Lead Free" Stainless Steel or Plastic construction.
• Bolted on, top entry single access cover for ease of maintenance.
• Modular check construction featuring nonreversible checks
with captured springs for simplified servicing.
• Top mounted vandal resistant EZ-TC-SS test cocks provide easy
access for testing — no tools or fittings required for testing.
• Stainless Steel test cocks include dust covers to protect the
threads from dirt, dust and insects.
• Check valve seats are replaceable without the use
of special tools.
• True line sized check modules reduce fouling due to
dirt and debris.
EZ-TC-SS Test Cocks
First Check
Module Assembly
Second Check
Module Assembly
Check Module Assembly
Series SS007QT features a modular design concept which
facilitates complete maintenance and assembly by retaining
the spring load.
IMPORTANT: INQUIRE WITH GOVERNING AUTHORITIES
FOR LOCAL INSTALLATION REQUIREMENTS
Now Available
WattsBox Insulated Enclosures.
For more information, send for literature ES-WB.
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.
LEAD FREE
*
*The wetted surface of this product contacted by consumable water
contains less than one quarter of one percent (0.25%) of lead by weight.
Specifications
A Double Check Valve Assembly shall be installed at each noted
location. The assembly shall consist of two positive seating check
modules with captured springs and silicone seat discs. Seats and
seat discs shall be replaceable without the use of special tools. There
shall be no threads or screws, in the waterway, exposed to line fluids.
Service of all internal components shall be through a single access
cover secured with stainless steel bolts. The assembly shall include
two resilient seated isolation valves, four top mounted vandal resist-
ant test cocks with dust covers and a protective stainless steel wye
strainer with a 20 mesh screen. The assembly shall consist of an
investment cast 316 Stainless Steel body and cover with Series 300
Stainless Steel test cocks, 316 Stainless Steel ball valve shutoffs with
PTFE seat blow out proof 304 Stainless Steel stem and 304 Stainless
Steel tee handles. The assembly shall meet the requirements of
ASSE Standard 1015 and AWWA Standard C510. The Lead Free*
Stainless Steel Double Check shall comply with state codes and
standards, where applicable, requiring reduced lead content. The
assembly shall be a Watts Series SS007QT.
ES-SS007.qxd 10/13/09 9:19 AM Page 1
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