DMZ673 pneumatic concealed rod knife gate valveDetailed product description：

Overview
DMZ673 pneumatic concealed rod knife gate valve is a complex automation control instrument, consisting of various pneumatic components and valve bodies. Mostly used in situations where quick cutting or opening is required.
Dual action: Two position control for valve opening and closing;
Single action: (spring reset): When the electrical and pneumatic circuits are cut off or malfunctioning, the valve automatically opens or closes.

Optional Accessories
1. Single or dual control solenoid valve (available in 24V, 220V and other voltage options, explosion-proof solenoid valve can be selected if necessary).
2. Proximity switch
3. Triple components for air source treatment (including pressure reducing valve, filter, and oil mist device).
4. Electric/pneumatic valve positioner (for regulating type).

Characteristics of DMZ673 Pneumatic Hidden Rod Knife Gate Valve:
1. Pneumatic concealed rod knife gate valve is a new variety of gate valve, with small volume, light weight, lightweight and material saving. It is an ideal product for industries such as sewage, coal slurry, mud, air, slag water mixture, water supply, papermaking, mining, etc.
2. Pneumatic concealed rod knife gate valve adopts metal to metal hard seal or metal to rubber soft seal. During the opening and closing process, the gate and sealing surface are designed with special features, resulting in minimal friction and durability.
3. The upper seal of the pneumatic concealed rod knife shaped gate valve breaks through the conventional sealing form by adopting an upper cover structure, which changes the upper seal from a large rectangular seal to a small circular seal, greatly improving the sealing performance. On the basis of circular sealing, the advanced floating sealing structure currently used internationally has been adopted, which enables the upper seal to reach the same lifespan as the pipeline, thereby improving the overall service life of the valve.
4. After installing a sealing device on the top of the handwheel, the pneumatic concealed stem knife shaped gate valve can keep all the moving parts of the valve in a closed state, and the screw drive of the gate and valve stem will not get stuck due to dry lubricating oil. Especially suitable for long-term normal operation in harsh environments with dust and dryness.

Main performance specifications:

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 water mixture

Main component materials:

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 (mm)

MPa	DN	L	D	D1	D2	H	N-M	D0	W(Kg)
one	fifty	forty-three	one hundred and sixty	one hundred and twenty-five	one hundred		4-M16	one hundred and eighty
	sixty-five	forty-six	one hundred and eighty	one hundred and forty-five	one hundred and twenty		4-M16	one hundred and eighty
	eighty	forty-six	one hundred and ninety-five	one hundred and sixty	one hundred and thirty-five		4-M16	two hundred and twenty
	one hundred	fifty-two	two hundred and fifteen	one hundred and eighty	one hundred and fifty-five		8-M16	two hundred and twenty
	one hundred and twenty-five	fifty-six	two hundred and forty-five	two hundred and ten	one hundred and eighty-five		8-M16	two hundred and thirty
	one hundred and fifty	fifty-six	two hundred and eighty	two hundred and forty	two hundred and ten		8-M20	two hundred and eighty
	two hundred	sixty	three hundred and thirty-five	two hundred and ninety-five	two hundred and sixty-five		8-M20	three hundred and sixty
	two hundred and fifty	sixty-eight	three hundred and ninety	three hundred and fifty	three hundred and twenty		12-M20	three hundred and sixty
	three hundred	seventy-eight	four hundred and forty	four hundred	three hundred and sixty-eight		12-M20	four hundred
	three hundred and fifty	seventy-eight	five hundred	four hundred and sixty	four hundred and twenty-eight		16-M20	four hundred
	four hundred	one hundred and two	five hundred and sixty-five	five hundred and fifteen	four hundred and eighty-two		16-M22	four hundred
	four hundred and fifty	one hundred and fourteen	six hundred and fifteen	five hundred and sixty-five	five hundred and thirty-two		20-M22	five hundred and thirty
	five hundred	one hundred and twenty-seven	six hundred and seventy	six hundred and twenty	five hundred and eighty-five		20-M22	five hundred and thirty
	six hundred	one hundred and fifty-four	seven hundred and eighty	seven hundred and twenty-five	six hundred and eighty-five		20-M27	six hundred
	seven hundred	one hundred and sixty-five	eight hundred and ninety-five	eight hundred and forty	eight hundred		24-M27	six hundred
	eight hundred	one hundred and ninety	one thousand and ten	nine hundred and fifty	eight hundred and ninety-eight		24-M30	six hundred and eighty
	nine hundred	two hundred and three	one thousand one hundred and ten	one thousand and fifty	one thousand and five		28-M30	six hundred and eighty
	one thousand	two hundred and sixteen	one thousand two hundred and twenty	one thousand one hundred and sixty	one thousand one hundred and fifteen		28-M30	seven hundred
	one thousand and two hundred	two hundred and fifty-four	one thousand four hundred and fifty	one thousand three hundred and eighty	one thousand three hundred and twenty-five		32-M36	eight hundred
one point six	fifty	forty-three	one hundred and sixty	one hundred and twenty-five	ninety-nine		4-M16	one hundred and eighty
	sixty-five	forty-six	one hundred and eighty-five	one hundred and forty-five	one hundred and twenty		4-M16	one hundred and eighty
	eighty	forty-six	two hundred	one hundred and sixty	one hundred and thirty-five		8-M16	two hundred and twenty
	one hundred	fifty-two	two hundred and twenty	one hundred and eighty	one hundred and fifty-five		8-M16	two hundred and twenty
	one hundred and twenty-five	fifty-six	two hundred and fifty	two hundred and ten	one hundred and eighty-five		8-M16	two hundred and thirty
	one hundred and fifty	fifty-six	two hundred and eighty-five	two hundred and forty	two hundred and ten		8-M20	two hundred and eighty
	two hundred	sixty	three hundred and forty	two hundred and ninety-five	two hundred and sixty-five		12-M20	three hundred and sixty
	two hundred and fifty	sixty-eight	four hundred and five	three hundred and fifty-five	three hundred and ten		12-M22	three hundred and sixty
	three hundred	seventy-eight	four hundred and sixty	four hundred and ten	three hundred and seventy-five		12-M22	four hundred
	three hundred and fifty	78<, /P>	five hundred and twenty	four hundred and seventy	four hundred and thirty-five		16-M22	four hundred
	four hundred	one hundred and two	five hundred and eighty	five hundred and twenty-five	four hundred and eighty-five		16-M27	four hundred
	four hundred and fifty	one hundred and fourteen	six hundred and forty	five hundred and eighty-five	five hundred and forty-five		20-M27	five hundred and thirty
	five hundred	one hundred and twenty-seven	seven hundred and fifteen	six hundred and fifty	six hundred and nine		20-M30	five hundred and thirty
	six hundred	one hundred and fifty-four	eight hundred and forty	seven hundred and seventy	seven hundred and twenty		20-M36	six hundred
	seven hundred	one hundred and sixty-five	nine hundred and ten	eight hundred and forty	seven hundred and eighty-eight		24-M36	six hundred
	eight hundred	one hundred and ninety	one thousand and twenty-five	nine hundred and fifty	eight hundred and ninety-eight		24-M36	six hundred and eighty
	nine hundred	two hundred and three	one thousand one hundred and twenty-five	one thousand and fifty	nine hundred and ninety-eight		28-M36	six hundred and eighty
	one thousand	two hundred and sixteen	one thousand two hundred and fifty-five	one thousand one hundred and seventy	one thousand one hundred and ten		28-M42	seven hundred
	one thousand and two hundred	two hundred and fifty-four	one thousand four hundred and eighty-five	one thousand three hundred and ninety	one thousand three hundred and twenty-five		32-M48	eight hundred

Optional accessories and exterior drawings