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HH49X Micro-resistance Slow-closing Butterfly Check Valve

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HH49X Micro-resistance Slow-closing Butterfly Check Valve

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Micro-resistance slow-closing butterfly check valve 1. Introduction of HH47X / HH48X / HH49X micro-resistance slow-closing butterfly valve:
Product model: HH47X / HH48X / HH49X
Product name: Micro-resistance slow-closing butterfly type muffler check valve Micro-resistance slow-closing butterfly type check valve Safe use of the system. The micro-resistance slow-closing butterfly check valve has the advantages of simple structure, small size, reliable performance and wear resistance. It requires the use of ductile cast iron, which is economical in price and long in service life.
The micro-resistance slow-closing butterfly check valve is mainly composed of a valve body, two semi-circular discs, a return spring, an oil storage cylinder, a slow-closing small cylinder, and a needle valve (micro-regulating valve). The use of nodular cast iron material is not only suitable for large diameter, but also wear-resistant and pressure-resistant. It is widely used in water supply and drainage, construction industry and water industry. Taichen micro-resistance slow-closing butterfly check valve with a diameter below DN600 is available from stock. Professional manufacturing is one of the more cost-effective products in the industry.
Second, the working principle of the micro-resistance slow-closing butterfly check valve:
The micro-resistance slow-closing butterfly check valve belongs to the category of automatic valves. It pushes the valve plate away by the thrust of the medium, and enters the lower part of the piston in the oil storage cylinder through the pressure medium. The tail end of the side small oil cylinder makes the piston rod in the small cylinder extend, and the medium pressure is automatically closed when the pressure drops. Because the piston rod is in the extended position, it cannot be fully closed against the valve flap, and about 20% of the remaining area allows the medium to pass through, thereby eliminating the water hammer. The pressure in the back cavity of the piston slowly enters the oil storage cylinder through a needle valve, and the valve flap gradually closes. The valve disc is divided into two steps: fast and slow, and then closed slowly, which can prevent the motor from reversing and also play the role of silencer.
Third, the main technical parameters:
Parameters of micro-resistance slow-closing butterfly check valve:
Working temperature: -10-90 ℃ (can do 260 ℃);
Main material: cast iron, ductile iron, cast steel;
Nominal diameter: DN50-1500mm
Slow closing range: 3 seconds to 60 seconds;
Flange standard [GB / T 17241.6 GB / T 9113]
Test standard [GB / T 13927 AP1598]
Material of main parts:
Part Name Valve body Butterfly Sealing ring Valve stem filler
material Gray cast iron, carbon steel Gray cast iron, carbon steel, ductile iron Neoprene, nitrile oil resistant rubber stainless steel Polytetrachloroethylene
V. Main appearance dimensions:
The way to 200 250 300 350 400 450 500 600 700 800 900 1000 1200 1400
L 230 250 270 290 310 330 350 390 430 470 510 550 630 710
H 550 630 690 780 860 910 980 1070 1220 1320 1430 1550 1800 1980
B1 540 600 650 710 770 830 900 1090 1200 1320 1420 1550 1780 2000
B2 600 700 740 800 870 920 1000 1250 1360 1480 1580 1700 1950 2175

If you have any enquiry about quotation or cooperation, please feel free to email us at kvc@vip.163.com or use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.

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