Tiny Drag Slow Shut Check Valve Axial Flow Non Slam Low Pressure Drop Stainless Steel ANSI Petrochemical China Manufacturer

Tiny Drag Slow Shut Check Valves

Essence: An automatic valve that combines low flow resistance channels with slow closing control, which achieves staged closure of the valve disc through damping devices or hydraulic regulation, reducing fluid resistance and eliminating water hammer impact, while balancing energy conservation and pipeline protection.

Core features:

Slow closing and energy dissipation: When closing, the valve is slowed down in two stages through damping buffering or hydraulic delay, greatly reducing water hammer pressure waves and noise;

Ultra low flow resistance: Designed with a full bore flow channel, it has low pressure drop loss, saves pumping energy consumption, and is suitable for high flow conditions;

Reliable sealing: The valve disc is covered with rubber or metal hard seal, tightly fitting the valve seat to prevent backflow and leakage;

Durable and maintenance free: Key components such as valve discs and shafts are made of stainless steel or wear-resistant coatings, which are corrosion-resistant and wear-resistant.

Typical applications: Water supply and drainage pump stations, HVAC systems, industrial high-pressure pipelines, and other scenarios that require anti backflow, anti impact, and energy sensitivity.

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Wide adaptability
Noise reduction and stability
Sealing and Durability
Slow closing energy dissipation mechanism
Energy saving and low resistance design

Wide adaptability

Wide adaptability
01
Support DN40 to DN2000 caliber range, covering various scenarios such as water supply and drainage, chemical industry, HVAC, etc;
02
Can be installed horizontally, vertically, or diagonally to meet the requirements of complex pipeline layouts.

Noise reduction and stability

Noise reduction and stability
01
The rubber coated valve disc and flexible contact structure reduce the impact sound of closing the valve, and the operating noise is reduced by more than 60% compared to traditional valves;
02
The damping device synchronously suppresses pipeline vibration, ensuring smooth system operation and avoiding equipment resonance damage.

Sealing and Durability

Sealing and Durability
01
The valve disc adopts rubber coating or engineering plastic composite technology, and the sealing surface is tightly adhered to achieve zero leakage, and is corrosion-resistant and wear-resistant;
02
The core components (such as valve shaft and piston) are made of stainless steel material, which can withstand high-pressure impact for a long time and have a service life of over 15 years.

Slow closing energy dissipation mechanism

Slow closing energy dissipation mechanism
01
Equipped with adjustable damping devices (such as hydraulic pistons or needle valves) after closing the rear stroke, the peak water hammer pressure can be reduced by more than 50% by delaying the closing speed of the valve disc;
02
The phased valve design first quickly intercepts most of the water flow, and then slowly closes the remaining 20% opening to balance impact protection and sealing efficiency.

Energy saving and low resistance design

Energy saving and low resistance design
01
By using a balance hammer device, the resistance to water flow when the valve disc rotates is only 1/5 of that of traditional swing check valves, significantly reducing valve opening energy consumption and improving energy efficiency;
02
The full bore channel structure reduces fluid pressure loss, adapts to high flow conditions, and significantly reduces pressure drop loss.

Performance Specifications & Dimensions

Nominal Pressure PN

1.0/1.6/2.5
Shell F

Px1.5
Sealing Pressure

Px1.1
Medium

Clear water, sewage, seawater
Temperature (℃)

0~80℃

Nominal Diameter DN(mm)	L	H	B
40	200	300	220
50	230	300	270
65	290	320	290
80	310	354	300
100	350	350	320
125	400	380	340
150	480	500	410
200	500	580	450
250	600	670	550
300	700	730	580
350	800	820	630
400	900	920	700
450	100	950	800
500	1100	1100	900
600	1300	1200	990
700	1400	1550	1120
800	1500	1700	1300

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.

Part Name	Valve body and valve cover	valve disc	valve shaft
material	Grey cast iron, cast steel	Steel plate, rubber, and composite components	stainless steel