Remote-Discharge Threaded Pressure-Relief Discs
Instead of exhausting discharge directly, these discs have a threaded relief port for attaching a drain line to direct discharge away from your work environment. They are for installation in pipelines and tanks. Discs break open at the burst pressure to allow unrestricted flow. All are for one-time use.
316 stainless steel discs are more corrosion resistant than nickel discs.
Operating ratio is the ratio between the normal operating pressure and the burst pressure. Exceeding the operating ratio decreases the service life of the disc. For example, a disc with a burst pressure of 100 psi and an operating ratio of 80% should not be used in a system with an operating pressure greater than 80 psi.
Inlet | Relief Port | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Burst Pressure, psi | Pipe Size | Location | Pipe Size | Location | Operating Ratio | Temperature Range, °F | End-to-End Lg. | Valve Type | Each | |
NPT Male Inlet and Relief Port | ||||||||||
Brass Body—Nickel Disc | ||||||||||
100 | 3/8 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/8" | Rupture Disc | 00000000 | 0000000 |
100 | 1/2 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/4" | Rupture Disc | 00000000 | 000000 |
125 | 3/8 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/8" | Rupture Disc | 00000000 | 000000 |
125 | 1/2 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/4" | Rupture Disc | 00000000 | 000000 |
150 | 3/8 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/8" | Rupture Disc | 00000000 | 000000 |
150 | 1/2 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/4" | Rupture Disc | 00000000 | 000000 |
Brass Body—316 Stainless Steel Disc | ||||||||||
200 | 3/8 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/8" | Rupture Disc | 00000000 | 000000 |
200 | 1/2 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/4" | Rupture Disc | 00000000 | 000000 |
250 | 3/8 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/8" | Rupture Disc | 00000000 | 000000 |
250 | 1/2 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/4" | Rupture Disc | 00000000 | 000000 |
500 | 3/8 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/8" | Rupture Disc | 00000000 | 000000 |
500 | 1/2 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/4" | Rupture Disc | 00000000 | 000000 |
700 | 3/8 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/8" | Rupture Disc | 00000000 | 000000 |
700 | 1/2 | Side | 1/2 | Side | 80% | -50° to 500° | 2 1/4" | Rupture Disc | 00000000 | 000000 |
Threaded Pressure-Relief Discs
These valves have a vented relief port to exhaust discharge directly. They are for installation in pipelines and tanks. All break open at the burst pressure to allow unrestricted flow. Discs are for one-time use.
316 stainless steel discs are more corrosion resistant than nickel discs.
Operating ratio is the ratio between the normal operating pressure and the burst pressure. Exceeding the operating ratio decreases the service life of the disc. For example, a disc with a burst pressure of 100 psi and an operating ratio of 80% should not be used in a system with an operating pressure greater than 80 psi.
Inlet | |||||||||
---|---|---|---|---|---|---|---|---|---|
Burst Pressure, psi | Pipe Size | Location | Relief Port Location | Operating Ratio | Temperature Range, °F | Overall Ht. | Valve Type | Each | |
NPT Male Inlet and Relief Vent | |||||||||
Brass Body—Nickel Disc | |||||||||
100 | 1/4 | Bottom | Side | 80% | -50° to 500° | 1 5/8" | Rupture Disc | 00000000 | 0000000 |
125 | 1/4 | Bottom | Side | 80% | -50° to 500° | 1 5/8" | Rupture Disc | 00000000 | 000000 |
150 | 1/4 | Bottom | Side | 80% | -50° to 500° | 1 5/8" | Rupture Disc | 00000000 | 000000 |
Brass Body—316 Stainless Steel Disc | |||||||||
200 | 1/4 | Bottom | Side | 80% | -50° to 500° | 1 5/8" | Rupture Disc | 00000000 | 000000 |
250 | 1/4 | Bottom | Side | 80% | -50° to 500° | 1 5/8" | Rupture Disc | 00000000 | 000000 |
500 | 1/4 | Bottom | Side | 80% | -50° to 500° | 1 5/8" | Rupture Disc | 00000000 | 000000 |
700 | 1/4 | Bottom | Side | 80% | -50° to 500° | 1 5/8" | Rupture Disc | 00000000 | 000000 |
Heat-Activated Threaded Pressure-Relief Discs
Also known as fusible plugs, these discs have a metal core that melts at a set temperature to exhaust discharge directly and allow unrestricted flow. Install these one-time-use discs in pipelines and tanks.
Exceeding the maximum operating temperature decreases service life and may cause the disc to open below its melting temperature. These discs should not be used in a system with an operating pressure greater than 500 psi.
Inlet | |||||||||
---|---|---|---|---|---|---|---|---|---|
Pipe Size | Location | Relief Port Location | Max. Pressure, psi | Max. Operating Temperature, °F | Overall Ht. | Disc Material | Valve Type | Each | |
NPT Male Inlet and Relief Vent | |||||||||
Brass Body—165° F Melting Temperature | |||||||||
1/4 | Bottom | Top | 500 | 100° | 3/4" | Bismuth, Cadmium, Lead, Tin | Rupture Disc | 0000000 | 000000 |
3/8 | Bottom | Top | 500 | 100° | 3/4" | Bismuth, Cadmium, Lead, Tin | Rupture Disc | 0000000 | 00000 |
1/2 | Bottom | Top | 500 | 100° | 7/8" | Bismuth, Cadmium, Lead, Tin | Rupture Disc | 0000000 | 00000 |
Brass Body—212° F Melting Temperature | |||||||||
1/4 | Bottom | Top | 500 | 150° | 3/4" | Bismuth, Lead, Tin | Rupture Disc | 0000000 | 00000 |
3/8 | Bottom | Top | 500 | 150° | 3/4" | Bismuth, Lead, Tin | Rupture Disc | 0000000 | 00000 |
1/2 | Bottom | Top | 500 | 150° | 7/8" | Bismuth, Lead, Tin | Rupture Disc | 0000000 | 00000 |
Flange-Mount Pressure-Relief Discs
Install these discs within the bolt circle of ANSI Class 150 flanges. They break open at the burst pressure to allow unrestricted flow. All are for one-time use. Discs are made of resin-impregnated graphite for resistance to temperature and pressure fluctuations as well as corrosive liquids and gases. They include two gaskets for installation between flanges.
Vacuum-rated discs have supports to resist rupture caused by vacuum.
Operating ratio is the ratio between the normal operating pressure and the burst pressure. Exceeding the operating ratio decreases the service life of the disc. For example, a disc with a burst pressure of 100 psi and an operating ratio of 80% should not be used in a system with an operating pressure greater than 80 psi.
Pipe Size | For Flange ANSI Class | OD | Thickness | Operating Ratio | Temperature Range, °F | Gasket Material | Valve Type | Choose a Burst Pressure, psi | Each | |
Graphite Body—Resin-Impregnated Graphite Disc | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
1 | 150 | 2 1/2" | 1 1/8" | 80% | -20° to 300° | Neoprene | Rupture Disc | 00000000 | 0000000 | |
1 1/2 | 150 | 3 1/4" | 1 1/8" | 80% | -20° to 300° | Neoprene | Rupture Disc | 00000000 | 000000 | |
2 | 150 | 4" | 1 1/8" | 80% | -20° to 300° | Neoprene | Rupture Disc | 00000000 | 000000 | |
3 | 150 | 5 1/4" | 1 1/8" | 80% | -20° to 300° | Neoprene | Rupture Disc | 00000000 | 000000 | |
4 | 150 | 6 3/4" | 1 1/8" | 80% | -20° to 300° | Neoprene | Rupture Disc | 00000000 | 000000 | |
6 | 150 | 8 5/8" | 1 1/8" | 80% | -20° to 300° | Neoprene | Rupture Disc | 00000000 | 000000 |
Pipe Size | For Flange ANSI Class | OD | Thickness | Max. Vacuum, in. of Hg | Operating Ratio | Temperature Range, °F | Gasket Material | Valve Type | Choose a Burst Pressure, psi | Each | |
Graphite Body—Resin-Impregnated Graphite Disc | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1 | 150 | 2 1/2" | 1 1/8" | 29.92 | 80% | -20° to 300° | Neoprene | Rupture Disc | 15 | 00000000 | 0000000 |
1 1/2 | 150 | 3 1/4" | 1 1/8" | 29.92 | 80% | -20° to 300° | Neoprene | Rupture Disc | 00000000 | 000000 | |
2 | 150 | 4" | 1 1/8" | 29.92 | 80% | -20° to 300° | Neoprene | Rupture Disc | 00000000 | 000000 | |
3 | 150 | 5 1/4" | 1 1/8" | 29.92 | 80% | -20° to 300° | Neoprene | Rupture Disc | 00000000 | 000000 | |
4 | 150 | 6 3/4" | 1 1/8" | 29.92 | 80% | -20° to 300° | Neoprene | Rupture Disc | 00000000 | 000000 | |
6 | 150 | 8 5/8" | 1 1/8" | 29.92 | 80% | -20° to 300° | Neoprene | Rupture Disc | 00000000 | 000000 |