Overview

The JIS standard stop valve is a cast steel stop valve strictly designed and manufactured in accordance with Japanese Industrial Standards (JIS). It uses a handwheel or an electric device to drive the stem and disc in a vertical lifting motion along the centerline of the seat, achieving reliable opening and closing of the medium in the pipeline. The core of its design lies in the valve body, which is precision-cast using SCPH series carbon steel, SCS series stainless steel, or special alloys as specified in JIS G5151. This results in a compact structure, good rigidity, and reliable sealing. The valve seat sealing surface typically features a flat or conical design, with stainless steel or hard alloy overlay welding. Through precision grinding, a reliable metal-to-metal seal is achieved. The valve uses a flanged connection conforming to JIS B2220, fastened directly to the pipeline system flanges with bolts, offering high connection strength, reliable sealing, and convenient assembly and disassembly. The handwheel drives the stem, converting rotational force into the linear motion of the disc for smooth and reliable opening and closing control. This valve is specifically designed for pipeline systems handling steam, oil, water, and mildly corrosive media at operating temperatures ≤425°C. It is widely used in industrial pipelines requiring fluid shut-off or connection, such as in petrochemical, power generation, metallurgy, heating, and water supply & drainage industries. It is particularly suitable for JIS standard pipeline conditions with nominal pressures of 10K~20K and diameters DN15~DN200.

JIS Standard Stop Valve Product Image

Features

1.Strictly comply with JIS standards, suitable for Japanese market: Designed and manufactured in accordance with JIS B2002, JIS B2071, JIS B2220, fully compatible with Japanese and Southeast Asian markets following the JIS system.

2.Aluminum nickel bronze body, seawater corrosion resistant: Body precision cast from JIS ALBC3 aluminum nickel bronze, excellent resistance to seawater and chloride ion corrosion, suitable for severe corrosive conditions such as ships and offshore platforms.

3.Reliable sealing, high and low temperature resistant: Disc and seat sealing surfaces can be body seal (W), stainless steel overlay (H) or hard alloy overlay (Y), precision ground to achieve reliable metal-to-metal sealing, applicable temperature range -196℃~525℃.

4.Smooth flow path, strong flow capacity: Optimized flow path design, smooth medium flow, low pressure loss, stable and reliable opening and closing.

5.Flange connection, easy assembly and disassembly: Flange dimensions conform to JIS B2220 (10K/20K), bolted connection, reliable sealing, easy installation and maintenance.

6.Handwheel operation, easy to operate: Equipped with handwheel operation, electric actuator can also be configured according to requirements, suitable for seawater, LNG, aromatics and other highly corrosive and high/low temperature pipeline systems.

JIS Standard Stop Valve Structure Diagram

Part Name and Material List

Performance Specification Table

JIS Standard Stop Valve Dimensional Drawing

JIS Standard Stop Valve Dimensional Table

10K（mm）

20K（mm）