共找到 868 条与 阀门综合 相关的标准,共 58 页
Pipeline valves. Brass ball valves. General specifications
Industrial valves - Valves for chemical and petrochemical process industry - Requirements and tests
7.1 外观 7.1.1 镀层表面光泽均匀,应无脱皮、龟裂、烧焦、露底、剥落、黑斑及明显的麻点、毛刺等缺陷。 7.1.2 涂层表面组织细密、光滑、色泽均匀,应无流挂、露底及明显的划痕和磕碰等缺陷。 7.1.3 抛光表面应光滑,应无明显毛刺、划痕和磕碰等缺陷。 7.1.4 塑料件表面应光滑、色泽均匀,应无明显的斑痕、划痕和凹痕。
Right-angle valve for sanitary appliance
Automatically pressure operated valves for natural gas dispensing systems
General requirements for air separation plant valve installation
This document applies to valves of DN 15 and larger, made of metallic materials for chemical and petrochemical plants. It contains additional requirements to those contained in the relevant European product standards (e. g. EN 593, EN 1349) and EN 16668. The use of design codes o
Industrial valves - Valves for chemical and petrochemical process industry - Requirements and tests; German version EN 12569:2020
LPG Equipment and accessories -- Specification and testing for Liquefied Petroleum Gas (LPG) pressure vessel valves and fittings
Industrial valves-Part-turn actuator attachment
Face-to-face and end-to-end dimensions of valves
General rules for marking on valves
Metal valves for use in flanged pipe systems-Face-to-face and centre-to-face dimensions
General purpose industrial valves-Marking
LPG Equipment and accessories - Specification and testing for Liquefied Petroleum Gas (LPG) pressure vessel valves and fittings
Industrial valves. Valves for chemical and petrochemical process industry. Requirements and tests
Industrial valves – Valves for chemical and petrochemical process industry – Requirements and tests
本标准规定了氧气用阀门的术语和定义、结构形式及型号、基本要求、技术要求、试验方法、检验规则、标志、供货要求及质量承诺。 本标准适用于工作压力不大于 21MPa,公称尺寸 DN10~DN1000(NPS3/8~NPS40),氧气介质温度-29 ℃~200 ℃、露点不高于-30 ℃,纯度(体积分数)大于 23.5%的氧气用阀门(包括截止阀、球阀、蝶阀和止回阀,以下简称阀门)。
Valves for Oxygen Services
Test procedures for flow coefficient valves
This document specifies the endurance test necessary to confirm the ability of hand-operated plastics valves to withstand prolonged use, with repeated opening and closure. It does not specify the ability of valves to withstand adverse conditions, in particular those of chemically aggressive fluid media and/or environments, or excessive fluid velocities and cavitation. NOTE Concerning the chemical aggression of the materials, a classification table is reported in ISO/TR 10358[1]. This document includes values of the parameters necessary for the proper performance of the endurance test, with the reservation that the parameters are different in particular product standards (see 5.1).
Thermoplastics valves - Fatigue strength - Test method (ISO 8659:2020)
Valve opening and closing torque test procedures
This document specifies the endurance test necessary to confirm the ability of hand-operated plastics valves to withstand prolonged use, with repeated opening and closure. It does not specify the ability of valves to withstand adverse conditions, in particular those of chemically aggressive fluid media and/or environments, or excessive fluid velocities and cavitation. NOTE Concerning the chemical aggression of the materials, a classification table is reported in ISO/TR 10358[1]. This document includes values of the parameters necessary for the proper performance of the endurance test, with the reservation that the parameters are different in particular product standards (see 5.1).
Thermoplastics valves — Fatigue strength — Test method
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