dn50 electric stainless steel ball valve metal seal ball valve

Electric hard seal flange ball valve has the same 90-degree rotation, with a circular through hole or channel passing through its axis. The ratio of the spherical surface and the channel port should be such that when the ball rotates 90 degrees, the inlet and outlet All places should be spherical, so as to cut off the flow. The electric flange ball intrusion only requires a 90-degree operation and a small torque to close tightly. The completely equal valve cavity provides a small resistance and straight flow path for the medium. It is usually considered that the ball valve is most suitable for direct opening. Closed use, but in recent years, the development of the ball valve has been designed to make it have the purpose of throttling and flow control. The main feature of the ball valve is its compact structure, easy operation and maintenance, suitable for general working media such as water, solvents, acid and natural gas, and it is also used for media with harsh working conditions, such as oxygen, hydrogen peroxide, methane and ethylene, etc.

1. Thrust bearing reduces the friction torque of the stem, which can make the stem operate smoothly and flexibly for a long time.

2.S tem seal is reliable, because the stem only as a rotating movement and do not do lifting movement, stem packing seal is not easy to damage, and the sealing capacity increases with the increase of medium pressure.

3 . T he fluid resistance is small, ball valve is all kinds of valves in the fluid resistance of the smallest, even if it is a reduced diameter ball valve, the fluid resistance is also quite small.

4 . T he valve seat sealing performance is good, using PTFE and other elastic materials made of the sealing ring, the structure is easy to seal, and the ball valve sealing capacity increases with the increase of medium pressure.

5 . D ue to the PTFE and other materials have good self-lubrication, friction loss with the ball is small, so the service life of the ball valve is long.

6 . L ower mounted stem and stem head convex step to prevent stem ejection, such as fire caused by stem seal damage, convex step and valve body can also form a metal contact, ensure stem seal.

More Details

Ball valve accessories

Optional electric device type: part of the transformation, such as DOW series, Q type/QT series 802 series/LQ series, DKJ series SD series, FRYIT series, etc., can be specified by the user.

DQW Series:his model is mostly 380V power supply, clutch device, electric/manual state can be switched through the clutch, has torque function, large volume, large output torque, can be equipped with large caliber valve optional torque 100-165000nm.

Fine small butterfly valve with a large share in the market, exquisite appearance, affordable price, as well as electrical limit, mechanical limit, overheating protection, dehumidification protection and other multiple protection functions.It  takes AC415V, 380 v, 240 v, 220 v, 110 v, DC24V driver for ac power supply, with 4-20 ma current signal, or 0 to 10 VDC voltage signal to control signal, can make the valve movement to the required position, automation control, maximum output torque of 6000 nm.Delicate small, beautiful and generous, the control mode has switch type, passive contact type, proportion type, intelligent control type.

QT type valve electric device volume is larger than fine small volume, the price is slightly higher than fine small.But the QT model has increased the over-torque protection function, while increasing a variety of control signals, customers have a wider range of selectivity.Added clutching device, electric/manual status can be switched through the clutch.Can do bus, a variety of communication protocols are optional.Optional torque: 50-2500 nm.Can be directly connected installation, base installation.At the same time, when the flameproof type is used, the flameproof grade is also higher than the fine small.

SD series Multiple voltages are available Servo motor with over torque protection function, When the power or signal is lost, it can keep in the original position before the power or signal is lost. It can output the alarm contact and display the valve position. The switch between remote and local operation control can be realized. The local operation part has protective measures to prevent misoperation. Optional torque: 100-35000nm

FRYIT series As a butterfly valve electric device, the Fryit model is much larger in size and weight than the small and Qt models.The protection level of the IT model has reached IP68, which can be used as a waterproof electric device. The test standard for some brands of IP68 is as follows: put the connector in a water depth of 10 meters and work for 2 weeks;The good performance of the product can still be maintained when the water depth is 100 meters and the damage test is carried out for 12 hours.Can be made into a variety of signal control bus, can meet the 24V solar control, can be mobile phone communication control.Optional Chinese and English menu, non-invasive life-long seal, over-torque protection, phase-loss protection, overheat protection, optional speed: 18r/min 24r/min 36r/min 48r/min 72r/min 96r/min.

Shipment Term:

1. Orders processed timely after the payment verification.

2. T erms of Deliver : FOB / CFR / CIF / EXW etc.

3. Due to stock status and time differences , we will choose to ship your item from our first available warehouse for fast delivery .

Payment Term:

1. Accept T/T, D/A, D/P, L/C, West Union with 30% Deposit.

2. Advance payment should be made within 3 days of order .

Documents:

1. Certificate of Origin: CO, FORM A, FORM E, FORM F, FORM X ISSUED BY CCPIT / Chamber of Commerce.

2. COMMERCIAL  INVOICE

3. PACKING LIST

3. QUALITY CERTIFICATE