Safety Assemblies

Harwood Engineering Company, Inc.

Safety Assemblies

For Pressures to 220,000 psi

Rupture tube and rupture disk safety assemblies are used to release excessive pressure in case of an emergency, when the system's relief or release pressure valves have failed. It is usually the "last line of defense" in any high pressure system. The burst pressure should be about 10-15% higher than the maximum pressure of the system. The tolerance of the burst is ±5%.

Features

Service for liquids and gases
Time proven design — in use for 25 years

Options

Stainless steel assemblies for water and hydrogen service
Custom design valves for special service

Rupture Tube Safety Assemblies (to 220,000 psi)

*Pressure rating applies to the outlet port
**High pressure ports per Harwood Engineering standard
				Dimensions, inches
Pressure Rating, psi*	Inlet Port**	Release Port, NPT	Part #	L	D (Diameter)
150,000	2M	¼ - 18	C-7203	8 ⁷/₈	1 ¾
220,000	3M	¼ - 18	C-5998	8 ⁷/₈	1 ¾
150,000	5M	¼ - 18	C-6106	9 ¼	1 ¾
150,000	6M	¼ - 18	C-7204	9 ¼	1 ¾
100,000	4L	¼ - 18	C-8789	6 ¼	1 ½
60,000	6L	¼ - 18	C-7206	9 ¼	1 ¾
100,000	8L	¼ - 18	C-7205	9 ¼	1 ¾
60,000	9L-3	¼ - 18	C-6465	10 ¼	2 ³/₈
220,000	12H-1	¼ - 18	C-5880	9 ¼	1 ¾

Rupture Disk Safety Assemblies (to 125,000 psi)

*Pressure rating applies to the outlet port
**High pressure ports per Harwood Engineering standard
				Dimensions, inches
Pressure Rating, psi*	Inlet Port**	Release Port, NPT	Part #	L	D (Diameter)
125,000	4L	½ - 14	C-4259	5 ¹⁵/₁₆	3
60,000	6L	½ - 14	C-4260	5 ¹⁵/₁₆	3
125,000	8L	½ - 14	C-4261	5 ¹⁵/₁₆	3
60,000	9L-3	½ - 14	C-4262	5 ¹⁵/₁₆	3
20,000	9L-5	½ - 14	C-4247	6 ⁹/₁₆	3 ¾
125,000	5M	½ - 14	C-4246	6 ⁷/₁₆	3
125,000	6M	½ - 14	C-4246	6 ⁷/₁₆	3
60,000	15F	½ - 14	C-4258	7 ¹/₈	3 ¾
125,000	16F	½ - 14	C-4263	6 ¹¹/₁₆	3
60,000	24F	½ - 14	C-4257	7 ¹/₈	3 ¾

455 South Street, Walpole, Massachusetts 02081

phone: 508-668-3600

fax: 508-660-2276

http://www.ultranet.com/~harwood/

email: harwood@ma.ultranet.com