WBSX Fire specific signal butterfly valveDetailed product description：

The WBSX fire special signal butterfly valve is a mid line clamp signal butterfly valve, which is a self-developed mid line butterfly valve with advanced foreign technology. It has the advantages of simple structure, reliable sealing, easy opening, long service life, and convenient maintenance. Therefore, it is widely used in various pipelines of water supply and drainage, building fire protection and other systems, especially in fire protection pipelines. This signal valve can clearly and accurately display the valve switch status, and has a visual, clear, and reliable reflection of the working status in the fire protection system. Therefore, it is widely and extensively applicable in fire protection systems.

Main technical parameters

The nominal Tongjing	Nominal pressure	Operating Temperature	Sealing Test	strength test	Applicable Medium
DN50～400mm	1.0/1.6/2.5MPa	-10℃～-80℃	1.1 times nominal pressure	1.5 times nominal pressure	Water, oil, and gas

Main component materials

Serial number	Part Name	Material	Serial number	Part Name	Material
one	valve body	Ductile iron, cast steel	seven	Seal ring	NBR。 EPDM
two	valve stem	SUS410/SUS316	eight	round washer	SUS316/brass
three	butterfly valve disc	Ductile iron spray coating, stainless steel	nine	open-loop	SUS316/brass
four	valve seat	EPDM，PTEE	ten	retaining ring	spring steel
five	bushing	Bronze, polytetrafluoroethylene

Main external connection dimensions of WBSX fire special signal butterfly valve Unit: mm

DN	fifty	sixty-five	eighty	one hundred	one hundred and twenty-five	one hundred and fifty	two hundred	two hundred and fifty	three hundred	three hundred and fifty	four hundred
H	two hundred and sixty-eight	two hundred and eighty-seven	three hundred and nine	three hundred and forty-two	three hundred and seventy-six	four hundred and ten	four hundred and ninety-five	five hundred and sixty-five	eight hundred and forty-nine	nine hundred and eighty-five	one thousand one hundred and nine
H1	seventy	seventy-six	eighty-six	one hundred and four	one hundred and eighteen	one hundred and thirty-two	one hundred and sixty-seven	one hundred and ninety-eight	two hundred and thirty-nine	two hundred and sixty-seven	three hundred and nine
L1	forty-three	forty-six	forty-six	fifty-two	fifty-six	fifty-six	sixty	sixty-eight	sixty-eight	seventy-eight	one hundred and two
L2	thirty-two	forty-seven	sixty-five	ninety-one	one hundred and twelve	one hundred and forty-six	one hundred and ninety-four	two hundred and forty-two	two hundred and ninety-two	three hundred and twenty-five	three hundred and eighty
L3	two hundred and forty-five	two hundred and forty-five	two hundred and forty-five	two hundred and forty-five	two hundred and forty-five	two hundred and forty-five	four hundred	four hundred	four hundred	four hundred	four hundred and thirty-one
Ф1	one hundred and fifty-two	one hundred and fifty-two	one hundred and fifty-two	one hundred and fifty-two	one hundred and fifty-two	one hundred and fifty-two	three hundred	three hundred	three hundred and five	three hundred and five	two hundred and ninety