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  • BS 6283-4:1991

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Safety and control devices for use in hot water systems Specification for drop-tight pressure reducing valves of nominal size up to and including DN 50 for supply pressures up to and including 12 bar

    Available format(s):  Hardcopy, PDF

    Superseded date:  31-07-2009

    Language(s):  English

    Published date:  28-06-1991

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Committees responsible
    Foreword
    Specification
    Section 1. General
    1.1 Scope
    1.2 Definitions
    1.3 Nominal size
    1.4 Marking
    Section 2. Materials
    2.1 General
    2.2 Bodies and associated parts
    2.3 Sealing and diaphragm materials
    2.4 Spring materials
    Section 3. Design and construction
    3.1 End connections and flow dimensions
    3.2 Guides and moving parts
    3.3 Adjustment
    3.4 Springs
    3.5 Strainer
    Section 4. Performance
    4.1 Production tests
    4.2 Type tests
    Appendices
    A Information to be supplied by the purchaser
    B Production tests
    C Torque test
    D Drop-tight seating test
    E Flow capacity test
    F Back pressure test
    G Endurance test
    Tables
    1 Nominal size of valve
    2 Flow capacity
    3 Torque
    Figures
    1 Drop-tight seating test rig
    2 Endurance test rig

    Abstract - (Show below) - (Hide below)

    Design, construction and testing of drop tight pressure reducing valves, sometimes known as pressure limiting valves. Does not give recommendations on application or installation of the valves.

    General Product Information - (Show below) - (Hide below)

    Committee B/504
    Development Note Supersedes 88/11544 DC and BS 6283-4(1982) (09/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    BS 5412-5:1976 Specification for the performance of draw-off taps with metal bodies for water services Physio-chemical characteristics: materials, coatings
    BS 864-5:1990 Capillary and compression tube fittings of copper and copper alloy Specification for compression fittings for polyethylene pipes with outside diameters to BS 5556
    BS 2056:1991 Specification for stainless steel wire for mechanical springs
    BS 970-4:1970 Specification for wrought steels for mechanical and allied engineering purposes Valve steels
    BS 3075:1976 Specification for nickel and nickel alloys: wire
    BS 3457:1973 Specification for materials for water tap and stopvalve seat washers
    BS 1726-1:1987 Coil springs. Guide for the design of helical compression springs
    BS 4781:1990 Specification for pressure-sensitive adhesive plastics labels for permanent use
    BS 5216:1991 Specification for patented cold drawn steel wire for mechanical springs
    BS 4504-2:1974 Circular flanges for pipes, valves and fittings (PN designated) Copper alloy and composite flanges
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