BS EN ISO 10434:2004 – Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries
1 Scope
This International Standard specifies the requirements for a heavy-duty series of bolted bonnet steel gate valves for petroleum refinery and related applications where corrosion, erosion and other service conditions would indicate a need for full port openings, heavy wall sections and large stem diameters.
This International Standard sets forth the requirements for the following gate valve features:
bolted bonnet;
outside screw and yoke;
rising stems;
non-rising handwheels;
single or double gate;
wedge or parallel seating;
metallic seating surfaces;
flanged or butt-welding ends.
It covers valves of the nominal sizes DN:
25; 32; 40; 50; 65; 80; 1 00; 1 50; 200; 250; 300; 350; 400; 450; 500; 600;
corresponding to nominal pipe sizes NPS:
1 ; 1 1 /4 ; 1 1 /2 ; 2; 2 1 /2 ; 3; 4; 6; 8; 1 0; 1 2; 1 4; 1 6; 1 8; 20; 24;
and applies for pressure Class designations:
1 50; 300; 600; 900; 1 500; 2500.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 7-1 , Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation、
ISO 5208, Industrial valves — Pressure testing of valves
ISO 5209, General purpose industrial valves — Marking
ISO 521 0, Industrial valves — Multi-turn valve actuator attachments
ISO 5752, Metal valves for use in flanged pipe systems — Face-to-face and centre-to-face dimensions
ISO 9606-1 , Approval testing of welders — Fusion welding — Part 1: Steels
ISO 1 5607, Specification and qualification of welding procedures for metallic materials — Part 1: General rules
ISO 1 5609-1 , Specification and qualification of welding procedures for metallic materials — Welding procedure specification — Part 1: Arc welding 1 )
ISO 1 561 0, Specification and qualification of welding procedures for metallic materials — Qualification based on tested welding consumables
ISO 1 561 4-1 , Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys
ISO 1 561 4-2, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 2: Arc welding of aluminium and its alloys 2)
ASME B1 .1 , Unified inch screw threads (UN and UNR thread form)
ASME B1 .5, Acme screw threads
ASME B1 .8, Stub acme screw threads
ASME B1 .1 2, Class 5 interference-fit thread
ASME B1 .20.1 , Pipe threads, general purpose (inch)
ASME B1 6.5, Pipe flanges and flanged fittings
ASME B1 6.1 0, Face-to face and end-to-end dimensions of valves
ASME B1 6.1 1 , Forged fittings, socket-welding and threaded
ASME B1 6.34:1 996, Valves — Flanged, threaded and welding end
ASME B1 8.2.2, Square and hex nuts — Inch series
ASME BPVC-IX, BPVC Section IX — Welding and brazing qualifications
ASTM A1 93, Standard specification for alloy-steel and stainless steel bolting materials for high temperature service
ASTM A1 94, Standard specification for carbon and alloy steel nuts for bolts for high pressure or high temperature service, or both
BS EN ISO 10434:2004 – Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries