Hh44h Heavy Weight Check Valve

• Media: Water-Vapour Oil
• Temperature: Low Temperature
• Material: Stainless Steel Carbon Steel Brass
• Connection Form: Flange Welding
• Structure: Swing
• Pressure: High Pressure, Medium Pressure and Low Pressure
• Model NO.: HH44H
• Function: Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence
• Sealing Form: Hard Seal and Soft Seal
• Flow Direction: Unidirection
• Standard: DIN GB ANSI Bsw JIS
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: XC
• Origin: China
• HS Code: 8481804090
• Production Capacity: 9999

Product Description

HH44H- Hydraulic weight slow closed check valve product details
Heavy weight slow closed check valve is mainly installed in hydropower station turbine inlet, used as turbine inlet valve; Or installed in the water conservancy, electric power, water supply and drainage and other types of pump outlet, replace the function of check valve and gate valve. When working, the valve works with the pipeline host, according to the principle of hydraulic transition process, through the preset opening and closing procedure, effectively eliminate the pipeline water hammer to achieve reliable cutoff of the pipeline, and play a role in protecting the safety of the pipeline system. The electro-hydraulic control function is complete, without additional configuration, it can be used as an independent system single machine local debugging and control; Can also be used as a distributed control system (DCS) of an equipment unit, through the 1/0 channel by the central computer centralized management, and pumps, water turbines, bypass valves and other pipeline equipment to achieve linkage operation; And equipped with manual function, no power supply can also be manually opened and closed valve, to meet the special conditions of valve commissioning, control requirements. Good controllability, wide adjustment range, strong adaptability. The electro-hydraulic control system has a number of adjustment points, which can be set according to different pipeline control requirements to open and close the program to ensure that when meeting the opening and closing conditions, the valve can and can automatically open and close according to the pre-set time and Angle and fast and slow two stages. And can realize no electric close valve, effectively eliminate destructive water hammer, prevent the pump and water turbine unit escape accident, reduce the pressure fluctuation of pipe network system, ensure the safe and reliable operation of equipment. The heavy weight slow closed check valve can replace the function of the original electric gate valve and check valve at the pump outlet, and the mechanical, electrical and hydraulic system is integrated as a whole, reducing the floor area and infrastructure investment.
Three, HH44H- hydraulic weight slow closed check valve product maintenance
1, the hydraulic system should be regularly repaired, filter or replace the hydraulic oil, and clean the tank.
2. After the hydraulic system is put into use for 3 months, the hydraulic oil should be filtered once and the oil tank should be cleaned. The oil that has been deteriorated and polluted should be replaced with new oil in time. When adding new oil, it should be added by oil filter truck. The filtration accuracy of oil filter truck is not less than 20μm, and pay attention to the use of the same brand of hydraulic oil.
3, the hydraulic system is put into use, should often observe the height of the oil level, do not work in the hydraulic cylinder, due to the drop of the liquid level and add new oil to the tank.
4. The hydraulic system is not used for a long time. Before it is formally put into operation, the parameters should be re-adjusted according to the fifth "debugging step" before it can be put into operation.
5, hydraulic oil should be selected according to the requirements, the general area can choose YB-N32 or YB-N46 anti-wear hydraulic oil; Cold areas can choose YC-N32 or YC-N46 low temperature hydraulic oil.
6, according to the requirements of the working condition, select the switching position of the switching switch QC, and keep the switching switch in the correct position.
Four, HH44H- hydraulic weight slow closed check valve product main components material
Parts name Parts material Valve body gray cast iron, ductile cast iron, carbon steel disc plate gray cast iron, ductile cast iron, carbon steel valve shaft stainless steel, carbon steel valve body sealing surface alloy steel, stainless steel plate sealing surface high-quality rubber, stainless steel/flexible graphite laminated sliding bearing copper alloy packing V-type sealing ring, flexible graphite wall plate carbon steel