The stainless steel motorized gate valve is advantaged with a wide application range, a nimble reaction and a high security. Simple structured and easily maintained, the motorized gate valve is able to adjust its speed. It tends to be buffered rather be stuck because of its delicate gas control system. Let’s take a look at several structural features of the stainless steel motorized gate valve.
Structural Features of the Stainless Steel Motorized Gate Valve:
- 1. The valve is of the reliable sealing structure with pressure-tighten or valve body and bonnet gasket. It’s highly secured.
- 2. The disc adopts double-gate with the universal top structure, which make it possible to automatically adjust itself to the seat sealing surface to ensure a well-sealed valve. Meanwhile, it is convenient to maintain with an economized cost and an interchangeable capacity.
- 3. The sealing surface of its disc and seat is plasma spray welded with cobalt-chromium-tungsten alloy. Being abrasion resistant and scratch proof, the rigid surface has a long service life.
- 4. The valve stem is made of nitrating steel with a nitration surface. Being corrosion resistant and scratch proof, the rigid surface has a long service life.
- 5. The electric device is equipped with a torque control mechanism, a on-site operating mechanism and a hand-motor switching mechanism. In addition to on-site operation, it can be capable of remote operation, PLC control, 4 ~ 20mA current input and output intelligent control, etc. .
- 6. The manual valve is opened by the hand wheel in the case of impact, otherwise by the manual mechanism in order to reduce valve operating force.
- 7. Valves can be installed wherever inside the pipeline. Meanwhile, choose either valve of carbon steel one or alloy steel one to match with the diversified media and temperature.
- 8. For the first installation and commissioning, make sure that the valve is half-opened manually, so as not to reverse the motor phase sequence leading to the damages of the valve and electric devices.
The motorized gate valve can be divided into two groups: one is the angle-stroke motorized valve. It is in match with the angle-stroke electric actuator. They two together achieve a 90-degree internal rotation to control the flow of the pipeline. The other is the direct-stroke motorized valve. It is in match with the direct-stroke electric actuator. They two together perform ups and downs to control the flow of the pipeline. The direct-stroke motorized valve is usually adopted by high-degree automation equipment. A horizontal installation of it ensures the perfect accuracy.
Principles of the Motorized Gate Valve:
The operating principle: The motorized gate valve is a combination of electric actuator and valve. The motorized gate valve turns the electric energy to the motive power, which enable the electric actuator to drive the valve to switch and regulate thereby controlling the flow of the medium in the pipe.
The solenoid gate valve is one of the motorized gate valves. With the electromagnetic coil, it generates magnetic field to pull the spool, thereby switching the valve body on and off. Once power off the coil, the spool springs back by the pressure.
Applications of the Motorized Gate Valve:
Being the AI controlling one, the motorized gate valve is preferable to flow analog regulation systems with liquid, gas and wind as their pipeline media. As for large valves and the air system, it can also be used as a two-position switch.
With AI to feedback signal, the motorized gate valve is controlled either by DO or AO, which is commonly seen in large pipes, air valves, etc..
The Types of the Switch:
The motorized gate valve is generally driven by a motor. It can be adjusted if the on-and-off action needs for a time analog.
Natural Capacity of Operation:
The motorized gate valve is generally driven by a motor, which is resistant to voltage shocks. The Solenoid valve is hyper-switched, generally used for minimal flow and pressure, otherwise use the motorized gate valve for the high frequency switch. The motorized gate valve can be in the state of open, closed or half-open to differently control the flow of media in the pipeline, which can not be done by the solenoid valve.
- 1. The motorized gate valve is made of high standard materials in line with the relevant standards domestically and internationally. An all-round superior quality is guaranteed.
- 2. The motorized gate valve meets the requirements of advanced standards domestically and internationally with a reliable seal-ability, an excellent performance and a pleasing appearance.
- 3. The sealing pair are advanced and reasonable. The sealing surface of the gate and the seat is of Stellite cobalt-based cemented carbide with the different hardness. Being wear resistant, high temperature endured, anti-corrosion and abrasion proof, the high rigid sealing pair has a reliable seal-ability and a long service life.
- 4. The stem is anti-corrosion, abrasion proof and wear resistant after quenching, tempering and a nitration treatment.
- 5. The motorized gate valve adopts a wedge-type elastic gate structure. It is equipped with a large diameter thrust bearing to minimize the friction and a manual impact device operated by a plain switch on-and-off.
- 6. The motorized gate valve can be any of piping flange standards and any of the flange sealing surface forms to satisfy all kinds of engineering needs and user requirements.
