Watts F1114-1 User Manual

RATE-OF-FLOW VALVE with SOLENOID (On-Off) FEATURE

01/05

F114-1 (Globe)

Classic Series

Speciﬁcations

The Rate-of-Flow Control Valve with Solenoid (On-Off) Feature shall be a pilot operated diaphragm valve designed to automatically limit ﬂow rate to a constant, adjustable, maximum. The throttling action of the valve shall be controlled by an externally mounted modulating control pilot which senses differential pressure across a remote mounted oriﬁce plate (ﬁeld installed). The valve shall also act as a Solenoid (On-Off) Control Valve, opening to allow ﬂow control action or closing drip-tight as commanded by the solenoid pilot.

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.

F1114-1 (Angle)

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 61 Certiﬁed Epoxy Coating applied by the electrostatic heat fusion process. All main valve throttling components (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 “Quad Seal” 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 Quad Seal 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, Adjustable Closing Speed, Adjustable Opening Speed Control, 2-Way Solenoid and Rate-of-Flow Pilot. Pilot control systems for valves 4” and larger shall contain an external Y-Strainer, Adjustable Closing Speed Control, Adjustable Opening Speed Control, 2-Way Solenoid, Rate-of-Flow Pilot and Isolation Ball Valves on all body connections. The Oriﬁce Plate shall be factory calibrated and installed in a machined counter-bore in the inlet ﬂange. All pilot control systems shall utilize copper tubing and brass ﬁttings regardless of valve size.

The valve shall be Watts ACV Model F114-1 (Globe) or F1114-1 (Angle) Rate-of-Flow Control Valve with Solenoid (On-Off) Feature.

8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com