Qualitrol LPRD/208/213/216 Large Pressure Relief Device

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Qualitrol Large Pressure Relief Device LPRD

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Mechanical device for relief of excessive pressure buildup in large volumes of gas or fluid. Patented dual gasket system provides quick response time and automatically reseals after pressure has subsided. Options include local operation indication, contacts (switches) for operation alarming, and directional shield for hot oil and gas exhaust control.

Features

World’s leading pressure relief device pioneered automatically resealing pressure relief
Greater than 50 years and 400,000 units of field experience in pressure relief have enabled Qualitrol experts to refine designs for maximum reliability
Most frequently customer specified pressure relief by name
Robust design and materials provide reliable protection and long life
Dual gasket design provides amplified force for rapid operation
Patented secondary seal wiper gasket provides more reliable resealing
Stainless steel operating valve, fasteners, and hardware
Flange and ring are made from aluminum with a chromate conversion coating with exposed aluminum components receiving an additional epoxy paint coat
Switches can be specified to operate as latching or momentary, SPDT or DPDT, high DC, or low current gold contact type, and with connector, terminal box, or flying lead style connections
Device can be top mounted horizontally (recommended) or side mounted vertically for maximum installation flexibility
100% tested for quality assurance
Test results are serialized for traceability
Visual and remote indication of operation
Standard units support up to two alarms switches that can be mounted directly to the device or on the directional shield

Options

Operating pressure, gasket material and type, hood material, Indicator style and color
Up to 2 latching or momentary switches (single or double pole form C, high DC, or low current gold contacts)
Electrical connection style
Gas bleed system
Optional directional shield can be coupled with piping, providing maximum protection of equipment, personnel and the environment by redirecting the flow of hot oil and gas
Optional semaphore (flag) provides visual indication of actuation and is available in different colors and materials
Main cover is available in zinc clad steel (208/213) or stainless steel (216) for added durability and corrosion resistance

Applications

For over pressure protection on oil filled transformers, load tap changers, and other related electrical apparatus. Capable of being integrated into Intelligent Transformer Monitors.

Product Brochure Configuration Form

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Qualitrol 206 MPRD Medium Pressure Relief Device

Uniquely designed tip/side gasket that seals under repeated operations

Up to 2 switches for alarm and control

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Advanced

Qualitrol LPRD/208/213/216 Large Pressure Relief Device

Stainless steel operating valve, fasteners, and hardware

Flange and ring are made from aluminum with a chromate conversion coating with exposed aluminum components receiving an additional epoxy paint coat

Switches can be specified to operate as latching or momentary, SPDT or DPDT, high DC, or low current gold contact type, and with connector, terminal box, or flying lead style connections

Learn More