BS 5352: Technical Regulation for Forged Gate, Globe, and Check Valves

Technical Overview and Scope of the BS 5352 Standard

This standard regulates the design requirements and operational parameters for forged, cast, and bar-stock gate, globe, and check valves. The document covers products with a nominal diameter of up to 50 mm (2 inches) inclusive, intended for use in pressure classes 150, 300, 600, 800, and 1500. EV Group China provides valves fully compliant with these specifications, adapted for flanged, threaded, or welded (butt-weld/socket-weld) connections.

Classification of Gate and Check Valves

• Gate Valves (outside screw, rising stem, bolted or welded bonnet):

1. Reduced bore design (compact, strictly for class 800).
2. Standard bore design.

• Gate Valves (inside screw, rising stem, handwheel, welded or bolted bonnet, for operation at temperatures up to 425 °C):

1. Reduced bore (compact, class 800).
2. Standard bore (class 1500).

• Globe Valves and Check Valves (straight or angle pattern, outside screw and yoke, rising stem):

1. Reduced bore options.
2. Standard bore options.

• Globe Valves (inside screw, rising stem, for temperature regimes up to 425 °C):

1. Reduced bore.
2. Standard bore.

Technical note: Threaded and socket-weld ends are permissible exclusively for classes 800 and 1500.

• Bellows Sealed Valves:

1. Gate valves with outside screw, yoke, and reduced bore.
2. Globe valves (straight/angle) with needle disk or plug, choice of bore size available.

• Check Valves (bolted, welded, or union bonnet design):
• Piston check (for horizontal or angle mounting).
• Globe check (for horizontal or angle mounting).
• Ball check (specialized for vertical flow).

Important clarification: The terminology “vertical”, “horizontal”, and “angle” in the BS 5352 standard refers to the center line of the valve body ends.