DMZ73 manual concealed stem knife shaped gate valveDetailed product description：

Overview
DMZ73 manual concealed stem knife shaped gate valve belongs to the field of valve technology. The problem to be solved is to provide a gas knife gate valve with short structural length, small volume, reliable sealing, and long service life. The composition includes a valve body, a gate plate, a valve cover, a valve stem, and a transmission mechanism. Its characteristics are that the valve body is a flat plate-like structure, connected to the pipeline by clamping. The gate plate adopts a single gate plate, with one side sealed with the valve body seat and the back side in wedge-shaped contact with the other side of the valve body. The sealing surface is opposite to the direction of the medium flow. The wedge-shaped contact structure is equipped with wedge-shaped compression blocks on the back of the sealing surface, and an adjusting top wire is provided at the corresponding compression block on the other side of the valve body. This utility model has the advantages of short length and light weight of the valve body structure, the sealing surface of the valve seat can be protected from medium erosion, the sealing surface is uniformly compressed, tightly adhered, dust particles, tar, etc. on the sealing surface of the valve seat can be scraped off during the closing process, and the discharge is convenient. Suitable for use in gas pipelines containing dust or tar.

Performance Specification for DMZ73 Manual Hidden Rod Knife Gate Valve

Nominal pressure (MPa)	Shell test (MPa)	Sealing test (MPa)	Operating Temperature	Applicable Medium
one one point six	one point five two point four	one point one one point eight	≤100℃ ≤100℃	Pulp, wastewater, coal slurry, ash, slag

Main technical parameters of manual concealed rod knife gate valve

Body and lid	gate valve	valve stem	sealing surface
Stainless steel, carbon steel, gray cast iron	Carbon steel, stainless steel	stainless steel	Rubber, PTFE, stainless steel, hard alloy

Main appearance and connection dimensions

Nominal pressure	Nominal diameter (mm)	L	D	D1	D2	H	N-M	D0
one	fifty	forty-eight	one hundred and sixty	one hundred and twenty-five	one hundred	two hundred and eighty-five	4-M16	one hundred and eighty
	sixty-five	forty-eight	one hundred and eighty	one hundred and forty-five	one hundred and twenty	two hundred and ninety-eight	4-M16	one hundred and eighty
	eighty	fifty	one hundred and ninety-five	one hundred and sixty	one hundred and thirty-five	three hundred and fifteen	4-M16	two hundred and twenty
	one hundred	fifty	two hundred and fifteen	one hundred and eighty	one hundred and fifty-five	three hundred and sixty-five	8-M16	two hundred and twenty
	one hundred and twenty-five	fifty-seven	two hundred and forty-five	two hundred and ten	one hundred and eighty-five	four hundred	8-M16	two hundred and thirty
	one hundred and fifty	fifty-seven	two hundred and eighty	two hundred and forty	two hundred and ten	four hundred and seventy-five	8-M20	two hundred and eighty
	two hundred	seventy	three hundred and thirty-five	two hundred and ninety-five	two hundred and sixty-five	five hundred and forty	8-M20	three hundred and sixty
	two hundred and fifty	seventy	three hundred and ninety	three hundred and fifty	three hundred and twenty	six hundred and thirty	12-M20	three hundred and sixty
	three hundred	seventy-six	four hundred and forty	four hundred	three hundred and sixty-eight	seven hundred and eighty	12-M20	four hundred
	three hundred and fifty	seventy-six	five hundred	four hundred and sixty	four hundred and twenty-nine	eight hundred and eighty-five	16-M20	four hundred
	four hundred	eighty-nine	five hundred and sixty-five	five hundred and fifteen	four hundred and eighty-two	nine hundred and ninety	16-M22	four hundred
	four hundred and fifty	eighty-nine	six hundred and fifteen	five hundred and sixty-five	five hundred and thirty-two	one thousand and one hundred	20-M22	five hundred and thirty
	five hundred	one hundred and fourteen	six hundred and seventy	six hundred and twenty	five hundred and eighty-five	one thousand and two hundred	20-M22	five hundred and thirty
	six hundred	one hundred and fourteen	seven hundred and eighty	seven hundred and twenty-five	six hundred and eighty-five	one thousand four hundred and fifty	20-M27	six hundred
	seven hundred	one hundred and thirty	eight hundred and ninety-five	nine hundred and forty	eight hundred	one thousand and seven hundred	24-M27	six hundred
	eight hundred	one hundred and thirty	one thousand and ten	nine hundred and fifty	nine hundred and five	two thousand	24-M30	six hundred and eighty
	nine hundred	one hundred and forty	one thousand one hundred and ten	one thousand and fifty	one thousand and five	two thousand and three hundred	28-M30	six hundred and eighty