Handwheel Rising Stem 4 Inch Gate Valve
TIANJIN RUIXINTONGDA VALVE CO., LTD.
Tianjin, China
Last Login Date:
Apr 02, 2024
Main Products:
Deluge Valve, Butterfly Valve, Wet Alarm Valve, Fire Signal Butterfly Valve, Needle Valve, Fire Alarm Valve, Ball Valve, Strainer
Product Description
Company Info
Basic Info.
Product Description
When the gate valve is closed, the sealing surface can be sealed only by medium pressure, that is, by medium only
Z41h flange wedge gate valve
Z41h flange wedge gate valve
The pressure pushes the sealing surface of the gate to the seat on the other side to ensure sealing of the sealing surface, which is self-sealing.Most gate valves are sealed by force, that is, when the valve is closed, to rely on external forces to force the gate to the seat to ensure sealing cover sealing.
Mode of motion: the gate plate of gate valve moves in a straight line with the stem, also known as the open stem gate valve.Usually with trapezoidal threads on the lifting rod, the rotary motion is changed into a straight motion through the nut on the top of the valve and the guide groove on the valve body, that is, the operating torque is changed into the operating thrust.When the valve is opened, when the height of the gate is 1:1 times the size of the valve, the flow channel is fully open, but this position cannot be monitored during operation.In practical use, the valve stem is marked by the vertex, that is, the open position, as its full open position.In order to consider the temperature change in the lock phenomenon, usually open to the vertex position, and then rewind 1/2-1 turn, as the full open valve position.Therefore, the full open position of the valve is determined by the position of the gate (i.e., travel >).Some gate valve stem nuts are located on the gate plate, the hand wheel turns to drive the valve stem to turn, and causes the gate plate to lift. This valve is called rotary stem gate valve or dark stem gate valve.
| mark | annealing process | project | WCA | WCB | WCC | ||
| heating temperature | soaking time | type of cooling | Tensile strength /Mpa | 415-585 | 485-655 | 485-655 | |
| WCA | 880-920 | 0.5 1 hour / 25 mm At least 1 h. | The oven to 450 ºC cold out air cooling | Yield strength /Mpa | ≥205 | ≥250 | ≥275 |
| WCB | elongation/% | ≥24 | ≥22 | ≥22 | |||
| WCC | reduction of area % | ≥35 | ≥35 | ≥35 | |||
| name | casting | forging | explain | ||
| mark | operating temperatureºC | mark | operating temperatureºC | ||
| Cast Iron | HT200 HT300 | -10-200 | PN≤1.0low pressure valve | ||
| carbon steel | WCA WCB WCC | -29-425 | 20,25,35,40 | -29-425 | Used for medium and high pressure valves |
| 16Mn,30Mn,A105 | -29-450 | ||||
| cryogenic steel | LCB LC3 | -46-345 -101-345 | Low temperature valve | ||
| heat resistant steel | WC6 WC9 | ≤593 | 20CrMoV 15Cr1Mo1V | ≤550 | High temperature and high pressure valves for non-corrosive media |
| ZG1Cr5Mo | ≤550 | 1Cr5Mo | ≤550 | High temperature high pressure valve for corrosive medium | |
Gate valve is designed as gate plate. The movement direction of gate plate is perpendicular to the flow direction. Gate valve can only be fully open and fully closed.Sealing face has two gate, two of the most commonly used mode gate valve sealing surface form a wedge, the wedge Angle vary with the valve parameters, usually for 5 °, medium temperature is not high for 2 ° 52 '.Wedge gate valve can be made into a whole, called rigid gate;It can also be made into a gate which can produce slight deformation to improve its craft and make up for the deviation of the sealing surface Angle during processing. This type of gate is called elastic gate.When the gate valve is closed, the sealing surface can be sealed only by medium pressure, that is, the sealing surface of the gate plate is pressed to the seat on the other side by medium pressure to ensure sealing of the sealing surface, which is self-sealing.Most gate valves are sealed by force, that is, when the valve is closed, to rely on external forces to force the gate to the seat to ensure sealing cover sealing.The gate of the gate valve moves in a straight line with the stem.Usually with trapezoidal threads on the lifting rod, the rotary motion is changed into a straight motion through the nut on the top of the valve and the guide groove on the valve body, that is, the operating torque is changed into the operating thrust.When the valve is opened, when the height of the gate is 1:1 times the size of the valve, the flow channel is fully open, but this position cannot be monitored during operation.In practical use, the valve stem is marked by the vertex, that is, the open position, as its full open position.In order to consider the temperature change in the lock phenomenon, usually open to the vertex position, and then rewind 1/2-1 turn, as the full open valve position.Therefore, the full open position of the valve is determined by the position of the gate and the stroke.Some of the gate valves, stem nuts are located on the gate plate, the hand wheel turns to drive the stem to turn and the gate plate is lifted, this valve is called rotary stem gate valve, or called the dark stem gate valve.
Packing & Delivery
1. Low flow resistance.The medium channel inside the valve body is straight through, the medium flows in a straight line, and the flow resistance is small.
2. It takes less effort to open and close.In contrast to globe valves, gate movement is perpendicular to the flow direction of medium, whether open or closed.
3. Large height and long opening and closing time.Gate opening and closing travel is large, the drop through the screw.
5. The medium can flow in any direction on both sides and is easy to install.Gate valve channels are symmetrical on both sides.
6. The structure length (the distance between the two connecting end faces of the shell) is small.
7. Simple shape, short structure length, good manufacturing technology and wide application range.
Our Company
Tianjin ruixin tongda valve co., LTD . Was founded in 2013, is located in Guanming Industrial Park, Beizhakou Town Of Jinnan Distrct, Tianjin,China. There is two highways nearby, traffic is very convenient. Out company mainly produces and OEM all kinds of valve, the main production fire-fighting butterfly valve, fire alarm valve, fire deluge valve, fire hydrant, drain valve, butterfly valve, check valve, globe valve, gate valve, ball valve, diaphragm valve. It is mainly used for fire fighting, building, water conservancy, shipbuilding, oil, power stations and other various fields. The company since its inception, always adhere to the \"strives for the survival by the quality, seek development with prestige\" the management idea; Comparable with strong quality assurance, affordable price, the shortest delivery time, advanced service concept, has consistently adhered to the \"leading science and technology, technological innovation, integrity\" as the objective, dare to innovation, implement the principle of quality is the life of the enterprise. People-oriented, sincerity. Benefit by management, seek development by innovation.
FAQ
1, Can I get free samples?
A: Yes,we can provide you the free sample, but you need to bear their own delivery costs.
2, Can I request to change the form of packaging and transportation?
A:Yes,We can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.
3, Can I request to advance the shipment?
A: It should be depends on whether there is sufficient inventory in our warehouse.
4,Can I have my own Logo on the product?
A: Yes, you can send us your drawing and we can make your logo, but you have to bear
their own the cost.
5,Can you produce the products according to my own drawings?
A:Yes,we can produce the products according to your drawings that will be most satisfy you
