DHS High Temperature Main Steam Trap Regulating Valve

DHS high temperature steam trap is a cascade type high pressure differential regulating valve. This valve is suitable for the drain system of the main steam and reheat steam pipelines of thermal power plants to control the saturated water at high pressure above 425℃. The high temperature steam trap can be pneumatically or electrically controlled, or manually controlled. It is one of the key regulating valves for large thermal power generating units.

※ Structural Advantage
1. The fluid is depressurized step by step, the direction of the fluid is constantly changing, the flow resistance is increased, the flow rate is controlled at about 30m/S, cavitation damage is prevented, and the pressure difference is allowed to be 25M Pa.
2. The throttling surface is separated from the sealing surface, and different throttling elements are provided according to the hydrophobic flow rate. The surface of the valve internal components is hardened, and the surface hardness reaches about HRC70.
Tight closure and long service life.
3. The valve body assembly adopts a high-pressure self-sealing structure. The greater the pressure difference, the better the sealing.
4. The valve body assembly and the actuator adopt a floating connection to eliminate the jamming phenomenon caused by the eccentricity of the valve core and the push rod.

※ Technical Parameters
Valve body:
Type: Forged straight-through valve body
Nominal diameter: DN25, DN32, DN40, DN50
Nominal pressure: ANSI600, ANSI 1500, ANSI2500
PN6.4MPa, PN25MPa, PN32MPa
Connection form: BW welding (or as required by the user)
Material: 20# forging (temperature ≤425℃) 12Cr1MoV (temperature ≥425℃)
Remarks: The working temperature is not allowed to exceed the allowable range of various materials.
Gland type: Bolt clamping type
Packing: Graphite plus Inconel wire braided packing
Valve components:
Valve core type: anti-cavitation cascade throttle valve core
Flow characteristics: linear
Media flow direction: high inlet and low outlet
Material: 9Cr18MoV nitriding hardening treatment
Actuator:
Equipped with electric actuator (electric opening or closing) (or according to user requirements) (Note: This valve can also be equipped with HA pneumatic diaphragm, VP cylinder piston actuator or manual mechanism)
Performance:
Allowable pressure difference 25MPa
Leakage: in line with ANSI B16.104-1976 IV level

※ Main Parts Materials
       

※ Kv Value and Stroke    

※ FAQ

What are the installation requirements for control valves?
The valve should be installed at the appropriate position of the pipeline to ensure that the flow direction is consistent with the direction indicated by the valve body; secondly, check whether the valve and its accessories are intact before installation to ensure that there is no damage; during installation, ensure that the pipeline connection is stable to avoid stress concentration and prevent damage to the valve; in addition, sufficient space should be provided for the valve to facilitate adjustment, inspection and maintenance; finally, the valve should be protected from excessive vibration or temperature, especially under high pressure and high temperature environments.

What are the common applications of temperature and pressure reducers?
Temperature and pressure reducers are widely used in many fields. They are mainly used in steam systems to reduce high-pressure steam to appropriate pressure to ensure safe operation of equipment. They are commonly used in power, fertilizer, food processing and other industries. They are also used in oil and gas pipelines, chemical production, pharmaceutical plants, etc. to ensure stable pipeline pressure and avoid system overpressure or excessive temperature. In addition, reducers are also used in HVAC, metallurgy and other industries to adjust the temperature and pressure of the fluid in the system to ensure the smooth progress of the process.

How to maintain medium and high pressure valves?
When maintaining medium and high pressure valves, first check the wear of key components such as valve body, valve seat, sealing ring and valve stem regularly. Clean the valve to prevent impurities from blocking and affecting operation. Check the operating performance of the valve to ensure flexible opening and closing without sticking. Check the sealing to prevent leakage and replace the seals if necessary. For valves that operate at high pressure for a long time, it is recommended to perform functional tests regularly to ensure their reliability under high pressure environment. In addition, check the connection parts of the valve to avoid looseness or leakage caused by vibration or corrosion.

※ Industry Applications

※ Company Introduction

Jiangsu Gaote Valve Industry Co., Ltd. was established in 2003. The company is a medium-sized enterprise specializing in the production of various petrochemical and power station valve series. The main products include high-temperature and high-pressure power station valves, gate valves, stop valves, ball valves, check valves, butterfly valves, instrument valves, needle valves, regulating valves and non-standard special valves for power stations, etc. Hundreds of varieties and specifications of valves, products are widely used in power, petrochemical, metallurgy, pharmaceutical, mining, steel, mining, water supply and drainage and other industries. The company's R&D team actively explores the field of valves and explores a path of industrial upgrading from ordinary valves to valves.

Jiangsu Gaote Valve Industry Co., Ltd. is an innovative demonstration enterprise of small and medium-sized enterprises in Jiangsu Province. It is located in the Economic Development Zone of Funing County, Jiangsu Province, and National Highway 204 passes through the territory. The company has passed the ISO9001 quality system certification and the special equipment manufacturing license of the People's Republic of China. It is a member unit of the power station accessories supply of the State Power Corporation, a member unit of the Sinopec Equipment Resources Market, and a member unit of the first-level supply network of China National Petroleum Corporation. It has gradually established a good reputation in power station valves. The company has an advanced management mechanism, with fixed assets of more than 30 million yuan, more than 100 sets of sophisticated mechanical processing equipment and inspection and testing equipment, and more than 10 technical R&D personnel, forming an integrated production, sales and service.