DQ Marine

Marine Equipment & Technical Supplies

TECHNICAL DATASHEET Issued 2026-09-21

DQ MARINE PRODUCT DATA

Sounding Self-Closing Valve

Category
GB/CB/CBM Valve
Origin
China
Sounding Self-Closing Valve

Product Overview

DQ Marine supplies marine equipment and technical products for shipyards, vessel operators, offshore projects and industrial buyers worldwide.

Key Specifications

Category GB/CB/CBM Valve
Model / SKU sounding-self-closing-valve
Standard CB/T3778-1999, JIS F3018
Weight / Size bold;line-height:19.1875px;background-color:#F2F2F2;">offshore platform.
Origin China

Technical Information

China Sounding Self-Closing Valve:

Sounding self-closing valve is called self-closing valve with sounding cap and test cock, self-closing valve for sounding pipe, Self closing parallel cock heads for short sounding pipe..etc. It is used on the sounding pipe system of the water/oil tank of vessel or offshore platform.

Technical Specification:

Standard: CB/T3778-1999, JIS F3018

Test: Hydraulic Test--0.3Mpa & last 5minutes. Seal Test---0.2Mpa & last 5minutes

Main Parts & Material:

1-Body: Bronze

2-Gland:Bronze

3-Plug: Bronze

4-Cover: Bronze

5-Counterweight (Test Cock): Nodular Iron

6-Self-Closing air valve: Brass

Main Size list(mm):
DN d (inch) H H1 L Weight(kgs)
40 G 1-1/2" 220 100 130 6.38
50 G 2" 225 105 140 6.85
65 G 2-1/2" 225 105 155 6.89