BS 1868-1975+A1-1990
石油、石化及联合工业用钢制止回阀(有法兰及对焊端)用规范

Specification for steel check valves (flanged and butt-welding ends) for the petroleum, petrochemical and allied industries

BS 1868-1975+A1-1990 发布历史

This British Standard specifies requirements for cast or forged steel check valves with flanged or butt-welding ends of the following types: a) swing, for vertical or horizontal flow (see Figure 1); b) lift: i) piston type, for angle or horizontal flow (see Figure 2); ii) ball type, for angle or horizontal flow (see Figure 3); iii) ball type, for vertical flow (see Figure 4); iv) disk type, for vertical flow (see Figure 5). The terms “vertical”, “horizontal” and “angle” relate to the axes of the body ends. When swing check valves are used in vertical lines the flow must be in an upward direction. For the purposes of this standard any line with a slope (upward or downward) of 5° or less is deemed to be horizontal. In the case of angle pattern valves the inlet should be vertical.

BS 1868-1975+A1-1990由英国标准学会 GB-BSI 发布于 1975-11-28，并于 1975-11-28 实施。

BS 1868-1975+A1-1990 在中国标准分类中归属于: J16 阀门，在国际标准分类中归属于: 75.180.99 其他石油和天然气工业设备。

BS 1868-1975+A1-1990的历代版本如下：

• 1975年11月28日 BS 1868-1975+A1-1990 石油、石化及联合工业用钢制止回阀(有法兰及对焊端)用规范

BS 1868-1975+A1-1990 由 BS 1868-1975 变更而来。

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标准号

BS 1868-1975+A1-1990

发布日期

1975年11月28日

实施日期

1975年11月28日

废止日期

无

中国标准分类号

J16

国际标准分类号

75.180.99

发布单位

GB-BSI

被代替标准

74/74150 DC BS 1868-1975

适用范围

This British Standard specifies requirements for cast or forged steel check valves with flanged or butt-welding ends of the following types: a) swing, for vertical or horizontal flow (see Figure 1); b) lift: i) piston type, for angle or horizontal flow (see Figure 2); ii) ball type, for angle or horizontal flow (see Figure 3); iii) ball type, for vertical flow (see Figure 4); iv) disk type, for vertical flow (see Figure 5). The terms “vertical”, “horizontal” and “angle” relate to the axes of the body ends. When swing check valves are used in vertical lines the flow must be in an upward direction. For the purposes of this standard any line with a slope (upward or downward) of 5° or less is deemed to be horizontal. In the case of angle pattern valves the inlet should be vertical.