Self-closing Gate Valve Heads for Sounding Pipe JIS F3019

Self-Closing Valve Head for Sounding Pipe JIS F3019

Self-closing gate valve head for sounding pipe, designed for marine tank level gauging systems. Construction is according to JIS F 3019-1996; testing per JIS F 7400-1996. Installed at the upper end of sounding pipes, it automatically returns to the closed position after measurement, minimizing vapor or liquid leakage from the tank.

Technical Specifications

• Design standard: JIS F 3019-1996
• Test standard: JIS F 7400-1996
• Body test pressure: 0.3 MPa
• Seat test pressure: 0.2 MPa
• Sizes: DN40, DN50
• Connection: G1½ for DN40, G2 for DN50
• Length L: 160 mm
• Operation: handwheel
• Function: self-closing after use

Construction Materials

Body, cover, disc, and handwheel: BC6 (bronze). Stem: C3771BD or BE (brass). Bronze/brass selection is compatible with marine environments requiring corrosion resistance and repeated operation.

Typical Applications

• Ship tank sounding pipes
• Fuel, lube oil, or water tanks
• Engine rooms and auxiliary systems
• Shipbuilding retrofits requiring JIS F3019
• Locations needing mechanical return to closed position

Selection Criteria

Select based on sounding pipe diameter, thread type, tank media, and safe access requirements for level measurement. Not for flow regulation; functions as a local isolation device at the measurement point.

Maintenance

Periodic inspection should verify mechanism return, seat tightness, packing condition, thread cleanliness, and stem wear. For fuel tanks, monitor for leakage, odors, and incomplete closure.

FAQ

Where is it installed?
At the upper end of the tank sounding pipe.

Is it a flow control valve?
No. It is a self-closing isolation device for level gauging procedures.

What sizes are available?
DN40 and DN50, with G1½ and G2 threads respectively.