The BS5163 Non-Rising Stem Gate Valve is a compact isolation valve designed for piping systems where vertical space is limited. Unlike rising stem valves, the stem rotates within the bonnet without moving vertically, keeping the overall height of the valve constant during operation. Constructed with a cast iron body (upgraded to ductile iron for larger sizes) and bronze/stainless steel trim, it provides reliable shut-off for water and steam applications.
Technical Specifications:
Nominal Diameter (DN): DN50 – DN300
Nominal Pressure (PN): 1.6 MPa (PN16)
Test Pressure (Strength/Water): 2.4 MPa
Test Pressure (Seal/Water): 1.8 MPa
Suitable Temperature: ≤ 100°C
Applicable Medium: Water, Steam
Main Parts and Materials:
Parts Name
Materials
Body, Bonnet
Cast iron/ductile iron
Disc
Cast iron/ductile iron
Stem
Stainless steel/brass
Seat Ring
Brass/stainless steel
Key Product Features:
Compact Non-Rising Stem Design: The stem rotates in place without vertical movement, minimizing the overall valve height for underground or height-restricted installations.
Durable Hybrid Construction: Features a robust cast iron body for standard sizes, upgraded to high-strength ductile iron for larger diameters to withstand higher mechanical stresses.
Corrosion-Resistant Trim: Equipped with brass or stainless steel seat rings and stem components to ensure long-lasting, leak-tight sealing performance.
Reliable Shut-Off: The precision-machined wedge gate design ensures a tight seal against the seat rings, preventing leakage in water and steam applications.
Rigorous Testing: Manufactured and tested to strict British and European standards (including 2.4 MPa strength and 1.8 MPa seal tests) for guaranteed safety and reliability.
Applications:
Ideal for Municipal Water Distribution, Underground Piping Networks, HVAC Systems, Fire Protection, and General Industrial Fluid Control. Specifically suited for valve pits, buried service, and mechanical rooms where vertical space is limited.