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Advantages |
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There are a number of advantages that make the Rupture Pin valve superior to rupture discs, spring-loaded conventional valves and pilot-operated valves when your looking to keep profits flowing and keep people, systems, products and the environment safe. We invite you to compare for yourself! |
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Rupture Pin Valves Pins cannot fatigue. They buckle at set point. There is no yearly replacement required. ------------------------------------------------------------------- Maximum operating pressure to 95% of set point. Zero leakage to set point. ------------------------------------------------------------------- No downstream trash possible. ------------------------------------------------------------------- No vacuum support required. ------------------------------------------------------------------- More accurate set point. 1 PSI to 5 PSI +/- 9% 5 PSI to 70 PSI +/- 5% 70 PSI to 60,000 PSI +/- 3% ------------------------------------------------------------------- Sense upstream pressure only OR differential pressure only. ------------------------------------------------------------------- Installing a pin is so easy, it is hard to imagine doing it wrong. ------------------------------------------------------------------- Pins are external to the process fluid and are made of corrosion resistant metals. ------------------------------------------------------------------- Pins are rugged and can be stored at the valve. ------------------------------------------------------------------- Pins are replaced by one person in only a minute, even with large valves. ------------------------------------------------------------------- The pin has two conditions – straight or buckled – making it visually apparent. A highly reliable proximity sensor may be added to sense a rising valve stem. ------------------------------------------------------------------- Settings can be changed in minutes without breaking the line by using the "Poco" pin option. ------------------------------------------------------------------- The pin is not system or ambient temperature sensitive. ------------------------------------------------------------------- Buckling stress is much LOWER than yield stress. ------------------------------------------------------------------- Pins are accurate and no vessel over-design is required. ------------------------------------------------------------------- Rupture Pin valves have excellent performance and are worry-free. ------------------------------------------------------------------- ASME Section VIII Relief Valves: Rupture Pin Valves Full bore relief at set point – opening in only milliseconds. ------------------------------------------------------------------- More accurate set point. 1 PSI to 5 PSI +/- 9% 5 PSI to 70 PSI +/- 5% 70 PSI to 60,000 PSI +/- 3% ------------------------------------------------------------------- Bubble-tight seal to set point. ------------------------------------------------------------------- Wide range of body, trim and seal materials: steel, 316L SS, Monel, 254 SMO and Hastelloy. Seal Material: Kalrez, EPDM and Viton. ------------------------------------------------------------------- Accuracy and repeatability at pressures to 60,000 PSI without destruction of a bubble-tight seal. ------------------------------------------------------------------- There is virtually no size limit – from a small 1/8" to a large 96". ------------------------------------------------------------------- No yearly testing required. Valve reliability can be checked while under pressure. |
Rupture Disks Discs fatigue and usually burst early. Yearly replacement is recommended. ------------------------------------------------------------------- With the many manufacturing tolerances, working close to set point is impossible. ------------------------------------------------------------------- Downstream fragmentation. Metal and plastic chards clog and damage downstream equipment. ------------------------------------------------------------------- Vacuum support may be required. ------------------------------------------------------------------- Many manufacturing tolerances (manufacturing, temperature and set point). Pressures below 40 PSI have severe accuracy penalties. ------------------------------------------------------------------- Senses differential pressure only. A major problem with containment systems. ------------------------------------------------------------------- Disks can be installed improperly. ------------------------------------------------------------------- Disks are in contact with corrosive system fluids. ------------------------------------------------------------------- Costly storage and handling required. ------------------------------------------------------------------- Costly downtime required to change the disks. ------------------------------------------------------------------- It is difficult or impossible to tell when a disk is damaged or has burst. Open line visual inspection is usually required since broken disk indicators are not reliable. ------------------------------------------------------------------- To change settings, you must break the line, which could cause pollution problems. ------------------------------------------------------------------- Since the temperature of the disk is not monitored, you do not know the set point. ------------------------------------------------------------------- Burst stress is GREATER than yield stress. ------------------------------------------------------------------- In many cases, vessels are over-designed to allow for rupture disk inaccuracies. ------------------------------------------------------------------- Too many factors affect disc performance and keep rupture disk users in a state of worry. Some of these include: pressurizing the system above the operating-to-burst-pressure ratio; handling or installation damage; damage from corrosive media; "shock" damage from system pulsations; and improper installation, which may include installing the rupture disk upside down, misaligned, overtorqued, undertorqued, failing to install all rupture disc elements, and installing the wrong rupture disc in a particular installation. ------------------------------------------------------------------- ASME Section VIII Relief Valves: Pilot-Operated & Spring-Loaded Valves Restrictive seat orifice. Full flow requires 10% over set pressure. ------------------------------------------------------------------- Accuracy limitations below 70 PSI, from +/– 2 PSI to 15 PSI. ------------------------------------------------------------------- Valve simmer close to set point. ------------------------------------------------------------------- Mild steel or stainless body and trim available. ------------------------------------------------------------------- At pressures over 1,000 PSI, seat damage is common on opening. ------------------------------------------------------------------- Usual valve sizes 1/2" to 8". ------------------------------------------------------------------- Yearly testing required. |
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99.99% Satisfaction and Proven Safe for the Environment! Buckling Pin Taylor Valve |
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