DQ Marine

Marine Equipment & Technical Supplies

TECHNICAL DATASHEET Issued 2026-08-23

DQ MARINE PRODUCT DATA

Marine Flanged Air Pressure Reducing Valve

Category
GB/CB/CBM Valve
Origin
China
Marine Flanged Air Pressure Reducing 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 marine-flanged-air-pressure-reducing-valve
Standard CB/T3656-94 for reference.
Weight / Size DN15~DN150
Origin China

Technical Information

China Marine Flanged Air Pressure Reducing Valve:

Marine Air Pressure Reducing Valve is used for marine compressed air pipe system. It can keep outlet pressure stable.

Technical Specification:

Standard:CB/T3656-94 for reference.

Nominal Size: DN15~DN150

Inlet Pressure: 1.0~3.0Mpa

Outlet Pressure:0.05~1.0Mpa

Pressure Class Inlet Pressure P1 (Mpa) Outlet Pressure P2(Mpa)
A 3.0 1.0~0.7
B 3.0 <0.7~0.2
C 1.0 0.4~0.05
Main Parts & Material:

Body-Bronze, Cast Iron, Cast Steel

Bonnet-Bronze,Cast Iron, Cast Steel

Spring-60Si2MnA

Film-Rubber

Main Size(mm):

Nominal Size Structure Size Flange Size
L H h D D1 D2 n d0
20 180 295 121 105 75 58 4 14
25 180 295 121 115 85 68 4 14
40 200 298 130 150 110 88 4 18
Note: the flange size in the above list is as per GB2501 PN2.5. The flange size also can be manufactured according to JIS, ANSI, DIN standard.