Watts M1113-12 - Manual (Page 6)

2 4 6 8 10 20 40 60 80 100 200 500 1000 2000 5000 10000 20000 100000
M
ustang
s
eries
12541 Gulf Freeway • Houston, Texas 77034 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
Specifications
M113-12 (Globe)
M1113-12 (Angle)
The Solenoid Control Valve shall be a pilot operated diaphragm valve designed to open fully or close drip-
tight as commanded by a 3-Way Solenoid Pilot. The valve shall have provisions for manual operation in
the event of power outage. Solenoid voltage shall be _________ and enclosure shall be NEMA 4 General
Purpose. The main valve shall (open / close) when the solenoid is energized.
The main valve shall be a hydraulically operated, single diaphragm actuated, globe or angle pattern valve.
Y-pattern valves shall not be permitted. The valve shall contain a disc and diaphragm assembly that forms
a sealed chamber below the valve cover, separating operating pressure from line pressure. The diaphragm
shall be constructed of nylon reinforced Buna-N, and shall not seal directly against the valve seat and shall
be fully supported by the valve body and cover. Rolling diaphragm construction will not be allowed and there
shall be no pistons operating the main valve or any pilot controls.
The main valve body and cover shall be Ductile Iron ASTM A536, and all internal cast components shall be
Ductile Iron or CF8M (316) Stainless Steel. All Ductile Iron components, including the body and cover, shall
be lined and coated with an NSF and FDA Approved Epoxy Coating applied by the electrostatic heat fusion
process. All main valve trim and throttling components (cover bearing, valve seat and disc guide) shall
be Stainless Steel. The valve body and cover must be machined with a 360-degree locating lip to assure
proper alignment.
The disc and diaphragm assembly shall contain a Buna-N synthetic rubber disc with a rectangular cross-
section that is securely retained on 3-1/2 sides by a disc retainer and disc guide. Diaphragm assemblies
utilizing bolts or cap screws for component retention will not be permitted.
The exposed portion of the seat disc shall contact the valve seat and seal drip-tight. The disc and diaphragm
assembly must be guided by two separate bearings, one installed in the valve cover and one concentrically
located within the valve seat, to avoid deflection and assure positive disc-to-seat contact. Center guided
valves will not be permitted. All necessary repairs shall be made from the top of the valve while the body
remains in line.
Pilot control systems for valves 3” and smaller shall contain a Flow Clean Strainer and a 3-Way Solenoid
Pilot with screw type Manual Operator. Pilot control systems for 4” valves shall contain a 3-Way Solenoid
Pilot with screw type Manual Operator, an external Y-Strainer and Isolation Ball Valves on all body connec-
tions. All pilot control systems shall utilize copper tubing and brass fittings regardless of valve size.
The valve shall be Watts ACV Model M113-12 (Globe) or M1113-12 (Angle) Solenoid On-Off Control Valve.
Other Watts ACV Solenoid Control Valves
M113-6 / M1113-6 Solenoid (On-Off) Valve (6” & larger)
910 Ops & Inst