check valve Books

  • Standards Official Notice - January 2019

    The following AWWA Standards are effective January 1, 2019: C502-18 Dry-Barrel Fire HydrantsC503-18 Wet-Barrel Fire HydrantsC518-18 Double-Disc Swing-Check Valves for Waterworks ServiceC521-18 Plastic Ball ValvesG410-18 Business Practices for Operation and ...

  • Standards Official Notice - Effective June 2017

    The following AWWA Standards will be effective June 2017:ANSI/AWWA B550-17 Calcium Chloride (October 13, 2016)ANSI/AWWA B602-17 Copper Sulfate (January 30, 2017)ANSI/AWWA C151/A.21.51-17 Ductile-Iron Pipe, Centrifugally Cast (February 14, 2017)ANSI/AWWA C508-17 Swing-Check Valves for Waterworks Service, 2-In. Through 48-In. (50-mm Through ...

  • API SPEC 11V1 Standard for Exploration & Production

    PurposeThis specification was formulated to provide gas lift valves, reverse flow (check) valves, orifice valves, dummy valves and wireline retrievable valve mandrels (WRVM) that are consistently manufactured to a predictable level of quality. Technical content provides requirements for design, materials, tests and inspecting, welding, marking, ...

  • API STD 594 For Petroleum Refining Standards

    This international standard covers design, material, face-to-face dimensions, pressure-temperature ratings, and examination, inspection, and test requirements for two types of check valves.— Type ‘A' check valves are short face-to-face as defined in Table 3 and Table 4 and can be: wafer, lug, or double ...

  • API RP 621 For Petroleum Refining Standards

    This recommended practice (RP) provides guidelines for reconditioning heavy wall (API 600 and API 594 type) carbon steel, ferritic alloy (up to 9 % Cr), stainless steel, and nickel alloy gate, globe, and check valves for ASME pressure classes 150, 300, 400, 600, 900, 1500, and 2500. Guidelines contained in this RP apply to flanged and butt weld ...

  • API STD 602 For Petroleum Refining Standards

    This international standard specifies the requirements for a series of compact steel gate, globe and check valves for petroleum and natural gas industry applications.It is applicable to valves of:— nominal pipe sizes NPS 1/4, NPS 3/8, NPS 1/2, NPS 3/4, NPS 1, NPS 1 1/4, NPS 1 1/2, NPS 2, NPS 2 1/2, NPS 3, and NPS ...

  • API SPEC 6A Standard for Exploration & Production

    PurposeThis International Standard specifies requirements and gives recommendations for the performance, dimensional and functional interchangeability, design, materials, testing, inspection, welding, marking, handling, storing, shipment, purchasing, repair and remanufacture of wellhead and christmas tree equipment for use in the petroleum and ...

  • API SPEC 16C Standard for Exploration & Production

    PURPOSE. This specification was formulated to provide for safe and functionally interchangeable surface and subsea choke and kill systems equipment utilized for drilling oil and gas wells. Other parts of the Choke and Kill System not specifically addressed in this document shall be in accordance with the applicable sections of this ...

  • API STD 598 For Petroleum Refining Standards

    This standard covers inspection, examination, supplementary examinations, and pressure test requirements for resilient-seated, nonmetallic-seated (e.g. ceramic), and metal-to-metal-seated valves of the gate, globe, plug, ball, check, and butterfly types. Resilient seats are considered to be:soft seats, both solid and semi-solid grease type (e.g. ...

  • Solution Spotlight: Electronic Controls

    When it comes to water management, technology is making some astounding advancements. For example, today, you can take highly accurate water level and pressure measurements and make immediate system changes through remote controls, all from an offsite location. Adopting electronic controls means substantial savings—in both water and budget! ...

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