TEMET is the brand name in special technology for hardened shelters and protective buildings designed to shield human lives, valuable assets and important functions against any threat originating from terrorism, military actions or industrial accidents.

TEMET’s product range covers blast resistant doors, blast valves, wall sleeve systems for HVAC and cable penetrations, CBRN -filters and complete filtration systems including Chemical Agent Detection and carbon dioxide removal.

Applications

The PV-KK blast valve is used as air intake and outlet valve in Civil Defence and military shelters and blast protected industrial facilities. The valve is particularly suitable for low pressure applications within the oil refining industry.

Specification

Manufacturer of PV-KK blast valve is Temet, Helsinki Finland.
The PV-KK blast valve block comprises three spring balanced closing elements moving in a slot and closing the air passage against the valve seats in response to both positive and negative (suction) phase of the blast. The valve blocks are mounted in structural steel wall frames to be cast in concrete wall. The wall frames are of flush design leaving no parts to extent beyond theconcrete wall surface.The valve is completely corrosion resistant. The valve closing elements are made of special non-corroding aluminum alloy, all springs are made of stainless steel, and thevalve body and wall frame made of structural steel are hot dip galvanized. The valve can be installed in upright or horizontal position in a wall or ceiling/floor.

Design Criteria

The PV-KK blast valve is made in accordance with specific provisions issued by the Finnish Ministry of Interior. The PV-KK blast valve also meets the requirements of the Swiss Federal Office of Civil Defence. The PV-KK is type tested and approved for use by the Technical Research Centre of Finland / VTT Building Technology, an Independent Testing Authority mandated to
perform type inspection for shelter equipment and systems by theMinistry of Interior. Type test reports as well as additional test data are available upon request.

Test and Performance Data

The valve is designed and tested to withstand multiple long duration (peak duration > 70 ms) blast loads having peak reflected overpressure of 1100 kPa(11 bar) and short duration (positive phase duration < 5.0 ms) blast loads having peak reflected overpressure of 1500 kPa(15 bar) while retaining its full functional ability.
Pass through (leakage) pressure and impulse of the valve do not exceed the values of 80 kPa(0.8 bar) and 35 Pa s (0.35 bar ms) respectively as measured on the average tributary wall area occupied by the valve.
The valve is shock tested with a mechanical shock of the installation base having a maximum acceleration of 30 g and velocity of 1.5 m/s.
The valve is designed to function within the operating temperature range of -20 …+200oC.

Type Test Report

VTT type test report No. 214-97/RTE1 and additional test data is available upon request.
Other documents related to PV-KK Blast Valve:
Installation Instructions,
Operation & Maintenance Instructions