Cast Iron Angle Safety Valve CB 304-92

CB 304-92 Cast Iron Angle Safety Valve | Marine Heavy-Duty Angle Pattern Safety Valve for Corrosion Prevention

Product Overview

The CB 304-92 Cast Iron Angle Safety Valve is a heavy-duty marine safety device specifically designed for shipbuilding applications where corrosion prevention is critical. Featuring a robust cast iron construction with bronze internals, this angle pattern safety valve provides reliable overpressure protection in systems susceptible to internal and external corrosion. Available in Type B and Type BS configurations with sizes from DN25 to DN80, it ensures operational safety and system integrity in demanding marine environments.

Key Features & Benefits

Corrosion-Resistant Design: Ideal for installations where internal or external corrosion is undesirable
Heavy-Pattern Construction: Specifically engineered for shipbuilding industry requirements
Angle Pattern Configuration: 90-degree design saves space and simplifies piping layouts
Premium Material Combination: Cast iron body with aluminum bronze stem and cast tin bronze disc
Custom Material Options: Available in upgraded materials to meet specific corrosion resistance needs
Multiple Pressure Ratings: Suitable for pressure ranges from 0.1~0.3 MPa to 0.9~1.6 MPa
Flange Connection: Ensures secure installation and leak-free operation
Standard Compliance: Meets CB 304-92 Chinese marine standard requirements
Quality Assurance: Strict quality control throughout manufacturing process

Material Specification

Body & Cover: Cast Iron (Standard)
Stem: Aluminum Bronze
Disc: Cast Tin Bronze
Optional Materials: Upgraded materials available upon request

Technical Specifications

Standard: CB 304-92
Nominal Diameter: DN25-DN80
Pressure Range: 0.1~1.6 MPa
Connection Type: Flange
Valve Type: Angle Safety Valve
Pattern: Heavy Pattern for Marine Applications

Dimensions – Type B (mm)

DN	PN (MPa)	L	H	D	D1	D2	d0	b	n	Th
25	0.1~0.3	174	80	105	73	56	13	14	4	M12
25	>0.3~0.6	174	80	105	73	56	13	14	4	M12
25	>0.6~0.9	174	80	105	73	56	13	14	4	M12
32	0.1~0.3	200	85	115	83	64	15	15	6	M14
32	>0.3~0.6	200	85	115	83	64	15	15	6	M14
32	>0.6~0.9	200	85	115	83	64	15	15	6	M14
40	0.1~0.3	210	90	125	93	74	15	16	6	M14
40	>0.3~0.6	210	90	125	93	74	15	16	6	M14
40	>0.6~0.9	210	90	125	93	74	15	16	6	M14
50	0.1~0.3	252	95	135	103	84	15	16	6	M14
50	>0.3~0.6	252	95	135	103	84	15	16	8	M14
50	>0.6~0.9	252	95	135	103	84	15	16	8	M14
50	>0.9~1.6	252	95	135	103	84	15	16	8	M14
65	0.1~0.3	316	115	155	123	104	15	15	8	M14
65	>0.3~0.6	316	115	155	123	104	15	15	8	M14
65	>0.6~0.9	316	115	155	123	104	15	15	8	M14
80	0.1~0.3	348	125	170	138	118	15	15	8	M14
80	>0.3~0.6	348	125	170	138	118	15	15	8	M14
80	>0.6~0.9	348	125	170	138	118	15	15	8	M14

Dimensions – Type BS (mm)

DN	PN (MPa)	L	H	D	D1	D2	d0	b	n	Th
25	0.1~0.3	174	100	115	85	68	14	6	4	M12
25	>0.3~0.6	174	100	115	85	68	14	6	4	M12
25	>0.6~0.9	174	100	115	85	68	14	6	4	M12
32	0.1~0.3	200	105	140	100	78	18	6	4	M16
32	>0.3~0.6	200	105	140	100	78	18	6	4	M16
32	>0.6~0.9	200	105	140	100	78	18	6	4	M16
40	0.1~0.3	210	115	150	110	88	18	7	4	M16
40	>0.3~0.6	210	115	150	110	88	18	7	4	M16
40	>0.6~0.9	210	115	150	110	88	18	7	4	M16
50	0.1~0.3	252	125	165	125	102	18	7	4	M16
50	>0.3~0.6	252	125	165	125	102	18	7	4	M16
50	>0.6~0.9	252	125	165	125	102	18	7	4	M16
50	>0.9~1.6	252	125	165	125	102	18	7	4	M16
65	0.1~0.3	316	145	185	145	122	18	8	4	M16
65	>0.3~0.6	316	145	185	145	122	18	8	4	M16
65	>0.6~0.9	316	145	185	145	122	18	8	4	M16
80	0.1~0.3	348	155	200	160	133	18	8	8	M16
80	>0.3~0.6	348	155	200	160	133	18	8	8	M16
80	>0.6~0.9	348	155	200	160	133	18	8	8	M16