CB 596-1990 Externally threaded steel right angle stop valve CB596-1990 Standard download decompression password: www.bzxz.net

China State Shipbuilding Corporation Department Standard
CB596-90
Externally threaded steel right angle stop valve
Published on 1990-02-25
Published by China State Shipbuilding Corporation
Implemented on 1990-12-01
China State Shipbuilding Corporation Department Standard
Externally threaded steel right angle stop valve
Subject content and scope of application
596-90
Classification number U52
Replaces CB596-77
This standard specifies the product classification, technical requirements, test methods, inspection planning, etc. of externally threaded steel right angle stop valves (hereinafter referred to as stop valves).
This standard applies to hydraulic systems of underwater ships whose medium is synthetic spindle oil. 2 Reference standards
GB3032
Marking of ship pipeline accessories
3 Product classification
General technical conditions for ship pipeline valves
Pipe flat shoulder threaded joints
The types of stop valves are classified as follows:
Type A external thread steel right angle stop valve
Type B steel right angle stop valve with bottom flange 3.2 Basic parameters of stop valves:
Nominal pressure PV=10MPa
Nominal diameter V=10~32mm
3.3 Structure of stop valve
3.3.1 The structure of type A stop valve is as shown in Figure 1.bZxz.net
Approved by China State Shipbuilding Corporation on February 25, 1990 and implemented on December 1, 1990
3.3.2 The structural dimensions of type A stop valve are as shown in Table 1. Nominal diameter
Structural dimensions
3.3.3The structure of type B stop valve is as shown in Figure 2.
CB596-90
Threaded joint
M36×2
M39×2
M48×2
M56×2
3.3.4The structural dimensions of type B stop valve are as shown in Table 2. Nominal
Structural dimensions
Marking example
M56×2
Threaded joint
CB596-90
Bottom flange dimensions
3.4.1 Type A external thread steel right angle stop valve with nominal pressure PN=10MPa and nominal diameter IV=25mm: stop valve A25CB596-90
3.4.2 Type B steel right angle stop valve with bottom flange with nominal pressure PN=10MPa and nominal diameter DV=25mm B25CB596--90
Lift quality
4 Technical requirements
4.1 The materials of the main parts shall be in accordance with Table 3.
Part name
Manufacturing requirements shall be in accordance with the provisions of GB600.
Performance requirements shall be in accordance with the provisions of GB600.
CB596-90
High-quality carbon structural steel
Stainless steel
Manganese brass
High-quality carbon structural steel
The pipe threaded joints used with stop valves shall comply with the provisions of CB·56. 5 Test methods
5.1 General requirements for tests shall comply with the provisions of GB600. 5.2 Hydraulic tests for strength and material tightness shall comply with the provisions of GB600. 5.3 Hydraulic sealing tests shall comply with the provisions of GB600. 6 Inspection rules
HMn582
GB699-65
GB1220—-81
GB1126-84
GB699-65
Each stop valve shall be inspected by the quality inspection department of the manufacturer and a certificate of conformity shall be issued. Inspection items shall comply with Table 4. Table 4
Marking, packaging
7.1 Marking shall be in accordance with GB3032.
7.2 Packaging shall be in accordance with GB600.
Appearance inspection
Strength and material tightness hydraulic test
Hydraulic sealing test
Additional notes:
This standard was proposed by the 603 Institute of China State Shipbuilding Corporation. This standard is under the jurisdiction of Wuchang Shipyard.
This standard was drafted by the 704 Institute of China State Shipbuilding Corporation. The main drafter of this standard is Zhang Xiaoou.
This standard is provided with unified construction drawings.
Should comply with the provisions of Article 4.2
Should comply with the provisions of Article 5.2
Should comply with the provisions of Article 5.3
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