Master valve definition

Master valve means a large valve located on the wellhead and used to control the flow of oil or gas from a well.
Master valve. Assembly: Install where indicated on the drawings. Isolation Gate Valve Assembly: Install where indicated on the drawings. Locate at least 12-inches from and align with adjacent walls or edges of paved areas. Quick Coupling Valve Assembly: Install where indicated on the drawings. INSTALLATION OF SPRINKLER AND BUBBLER IRRIGATION COMPONENTS Remote Control Valve (RCV) Assembly for Sprinkler and Bubbler Laterals: Flush mainline before installation of RCV assembly. Install where indicated on the drawings. Wire connectors and waterproof sealant shall be used to connect control wires to remote control valve wires. Install connectors and sealant per the manufacturer's recommendations. North College Corridor Improvements – Conifer to Xxxxxx July 14, 2014 Project Special Provisions REVISIONS OF SECTION 623 IRRIGATION SYSTEM Install only one RCV to a valve box. Locate valve box at least 12-inches from and align with nearby walls or edges of paved areas. Group RCV assemblies together where practical. Arrange grouped valve boxes in rectangular patterns. Allow at least 12-inches between valve boxes. Adjust RCV to regulate the downstream operating pressure. Attach ID tag with controller station number to control wiring. Sprinkler Assembly: Flush lateral pipe before installing sprinkler assembly. Install per the installation details at locations shown on the drawings. Locate rotary sprinklers 12-inches from adjacent walls, fences, or edges of paved areas. Locate spray sprinklers 3-inches from adjacent walls, fences, or edges of paved areas. Set sprinklers perpendicular to the finish grade. Supply appropriate nozzle or adjust arc of coverage of each sprinkler for best performance. Adjust the radius of throw of each sprinkler for best performance. Bubbler Assembly: Flush lateral pipe before installing bubbler assembly. Install bubbler assembly per the installation details at locations shown on the drawings. Adjust the output flow of each bubbler for best performance. INSTALLATION OF DRIP IRRIGATION COMPONENTS Remote Control Valve (RCV) Assembly for Drip Laterals: Flush mainline pipe before installing RCV assembly. Locate as shown on the drawings. Wire connectors and waterproof sealant shall be used to connect control wires to remote control valve wires. Connectors and sealant shall be installed as per the manufacturer's recommendations. Install only one RCV to valve box. Locate at least 12-inches from and align with nearby walls or edges of paved areas. Group RCV assemblies...
Master valve means a remote control valve located after the backflow prevention device that controls the flow of water to the irrigation system mainline.

Examples of Master valve in a sentence

  • Configuration, location and installation of POC and POC components shall be arranged such that distance from City main to downstream side of Master valve shall be as short as possible.

  • Master valve shall be installed after the backflow prevention device using a normally closed valve.

  • Check for following in a tank truck as per statutory regulations before accepting it for filling:  Provision of PV vent, emergency vent, Master valve and other safety fittings.

  • Master valve box covers shall be heat branded with the controller assignment.

  • Engineering design: Design of well and wellhead.2. Civil works: Construction of roads, drilling platforms, water supply, cuttings handling etc.3. Wellhead procurement: Master valve, operating valve, side valves, fittings, pipes etc.4. Wellhead installation: Mechanical works, drilling cellar, borehole shed, silencer etc.

  • The tank lorries should have provision for sealing with bullet type seals at all top dome covers , Master valve box and discharge points to guard against any malpractices .

  • Additional disadvantages would be that interventions through the tubing are more difficult than a vertical tree since removing orinstalling plugs is more difficult than opening or closing the valves in the conventional X-mas tree.Below is a description of the main valves in a subsea X-mas trees used for the production phase: Master valve: It is used to completely shut in the well production tubing/annulus.

  • Additional disadvantages would be that interventions through the tubing are more difficult than a vertical tree since removing orinstalling plugs is more difficult than opening or closing the valves in the conventional X-mas tree.Below is a description of the main valves in a subsea X-mas trees used for the production phase:• Master valve: It is used to completely shut in the well production tubing/annulus.

  • Master valve shall be brass body, rated at 200 PSI, 3” size, normally open with 24 VAC solenoid, Superior 3300 Series with standard 12-volt solenoid.

  • Verify splices at the valve box, from the Master valve wire to the cable and flow sensor wire to the cable, made with watertight connectors.


More Definitions of Master valve

Master valve means automatic valve installed at the irrigation supply point which controls water flow into the irrigation system. When this valve is closed water will not be supplied to the irrigation system.
Master valve means an automatic control valve located inline of the mainline and upstream of the rest of an irrigation system’s automatic control valves.

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