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Concealed Rod Elastic Seat Sealing Gate Valve

A valve that achieves full open or full close control by driving the gate plate through the rotation of the valve stem. The valve stem is a hidden stem structure (does not rise or fall with the gate plate), designed with cast iron/stainless steel valve body and elastic sealing ring (such as rubber). The deformation compensation of the sealing ring is used to achieve high sealing performance, effectively preventing leakage and rust. Compact structure and easy operation, suitable for medium opening and closing of pipeline systems such as tap water, sewage, petrochemical, and construction, but not suitable for flow regulation.

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Wide adaptability
Low friction operation and maintenance convenience
Corrosion resistance performance
Anti clogging and low flow resistance design
Lightweight and compact design
Elastic sealing structure

Wide adaptability

Wide adaptability
01
Applicable media include water, gas, oil, etc., which can meet the needs of water supply and drainage, fire protection, petrochemical, construction and other scenarios.

Low friction operation and maintenance convenience

Low friction operation and maintenance convenience
01
The valve stem is designed with three O-ring seals to reduce frictional resistance and facilitate easy operation; Support online replacement of sealing rings without the need for water maintenance.

Corrosion resistance performance

Corrosion resistance performance
01
The inner cavity is coated with non-toxic epoxy resin, and the valve stem and other components are made of stainless steel or copper alloy material, which has strong corrosion resistance and is suitable for sewage, drinking water, and chemical media.

Anti clogging and low flow resistance design

Anti clogging and low flow resistance design
01
Adopting a flat bottomed valve seat and a full flow channel with the same diameter as the pipeline to avoid debris accumulation and reduce fluid resistance.

Lightweight and compact design

Lightweight and compact design
01
The valve body is mainly made of ductile iron, which is 20% -30% lighter in weight than traditional valves, and has a compact structure that is easy to install and maintain.

Elastic sealing structure

Elastic sealing structure
01
The gate adopts an integral rubber or rubber wrapping design, combined with precise geometric dimensions, to ensure high sealing and durability, effectively preventing medium leakage.

Main Component Materials

Part Name	Material
Valve body	Grey cast iron, ductile iron, cast steel
Ram	Ductile iron coated with EPDM or nitrile rubber
Hex socket head bolt	Carbonization treatment
Sealing ring	Nitrile rubber
Valve cover	Grey cast iron, ductile iron, cast steel
Valve stem	Stainless steel (45 #, 1Cr13, 304, 416, 316)
O-ring seal	Nitrile rubber
Thrust bearing	Tin bronze
Bolt	Stainless steel
Cover pressing	Ductile iron, cast steel
Dust cover	Nitrile rubber
Handwheel (transmission cap)	Cast iron, ductile iron

Performance Specifications & Dimensions

Nominal Pressure PN

1.0/1.6/2.5
Shell F

Px1.5
Sealing Pressure

Px1.1
Medium

Water, Oil, Gas, Etc
Temperature (℃)

0~120℃

Nominal Diameter DN(mm)	D	D1		Z-Φd		L	H
Nominal Diameter DN(mm)	PN1.0/1.6MPa	PN1.0MPa	PN1.6MPa	PN1.0MPa	PN1.6MPa	L	H
50	165	125	125	4-19	4-19	178	340
65	185	145	145	4-19	4-19	190	370
80	200	160	160	8-19	8-19	203	410
100	220	180	180	8-19	8-19	229	450
125	250	210	210	8-19	8-19	254	480
150	285	240	240	8-23	8-23	267	550
200	340	295	295	8-23	12-23	292	630
250	405	350	355	12-23	12-28	330	750
300	460	400	410	12-23	12-28	356	820
350	520	460	470	16-28	16-28	381	980
400	580	515	525	16-28	16-31	406	1010
450	640	565	585	20-28	20-31	432	1270
500	715	620	650	20-28	20-34	457	1270
600	840	725	770	20-31	20-37	508	1390

Note: The pressure range is 1.0MPa-2.5MPa. The above data is for reference only. Please consult the company's sales department for details.

Valve Application

Oil & Gas Transportation

Oil and gas transportation involves multiple modes such as pipelines and ships, and is the core link of the energy supply chain.
Chemical Raw Material Control

The control of chemical raw materials covers the entire process of mining, storage, and production, ensuring safety and process stability.
High Temperature SteamPipeline in Power System

High temperature steam pipelines are the core of energy transmission in power systems, supporting the efficient operation of thermal and nuclear power plants.
Other Industries

Valves control fluids in multiple industries such as new energy and electronics, ensuring safe and efficient production.