GB/T 2031-1994 Marine Fire-fighting Coupeigs
Marine fire fighting couplings are specialized fittings used to connect hoses and other firefighting equipment to water sources on ships or offshore platforms. These couplings are designed to withstand the harsh conditions of marine environments, including saltwater exposure and high pressure situations.
Overview
Coupeigs Type and Basic Parameters
A- Internal thread fire joint (DN40/DN50/DN65)
B-hose connector (DN40/DN50/DN65)
C- Fire joint cap (DN40/DN50/DN65)
D-international Shore connection (DN50/DN65)
E-reducer fire joint (DN50/DN65)
Nominal pressure: 1.6MPa
Outline Drawings
A & B Type
C & D Type
E Type
Main Specification
A Type
DN | d | D1 | D2 | D3 | D4 | L1 | L2 | m | n |
40 | G1 1/2 | 56 | 66 | 74 | 84 | 54 | 20 | 10 | 5 |
50 | G2 | 65 | 78 | 85 | 96 | 57 | 22 | 12 | 5 |
62 | G2 1/2 | 80 | 90 | 98 | 115 | 63 | 25 | 12 | 5.5 |
B Type
DN | D | D1 | D2 | D3 | D4 | L1 | L2 | m | n |
40 | 38 | 56 | 66 | 74 | 84 | 97 |
30 | 10 | 5 |
50 | 51 | 65 | 78 | 85 | 96 | 85 | 12 | 5 | |
65 | 63.5 | 80 | 98 | 98 | 115 | 92 | 12 | 5.5 |
C Type
DN | D | D1 | D2 | D3 | D4 | L1 | L2 | m | n |
40 | 48 | 56 | 66 | 74 | 84 | 97 |
30 | 10 | 5 |
50 | 55 | 65 | 78 | 85 | 96 | 52 | 12 | 5 | |
65 | 66 | 80 | 90 | 98 | 115 | 55 | 12 | 5.5 |
D Type
DN | D1 | D2 | D3 | D4 | D4 | L | L1 | m | n |
50 | 65 | 78 | 85 | 85 | 96 | 100 | 60 | 10 | 5 |
65 | 80 | 90 | 98 | 98 | 115 | 57 | 12 | 5.5 |
