ZIPSON STEEL provide fire safe certified ball valve by ASME/API standard 607 fifth edition, released in June 2005. The identical standard is ISO 10497-5:2004. The standard was titled, Fire Test for Soft-seated Quarter-turn Valves. Fire safe valve was designed when the plant is firing, the soft seats were all burned out, the valve still sealed by the precise valve ball & body. This will keep the damage as low as possible.
207 Series was approved with split body flanged full bore design, belleville washer, graphite gasket & stem packing. This type is designed for most industires with qualified size 1/2" to 4" (DN15 to DN100) & qualified pressure rarting Class150, 300/ PN10, 16, 25, 40 for item 207F, 207S, 107S and high pressure valve Class 900, 1500 for Item 305D, 305F, 306D, and 306F type.
Zipson is preparing new valves of different types and sizes range for fire safe test to expend or product ranges.
solution of fire safe for 3/4-way valves
The fire safe test ask the ball to block the port after firing to keep from inner leakage. For 3/4-way valve, you'll have 3 ports but only one ball. That's why no one can make this happen, the only one ball can't block 3 or 4 ports.
The solution Zipson offer is to use suitable seals on multi-way valve to prevent from outer leakage while firing, and set 3 or 4 fire safe valves on each port. These 2-way fire safe valves will block the media by their fire safe design.
Tel: 886-5-2209374 e-mail: loogoon@ms22.hinet.net
SPRING RETURN HANDLE
DEAD-MAN HANDLE