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E-mail
shrtvalve@163.com
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Phone
13621973988
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Shanghai Fengxian Industrial Zone
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Shanghai Rongti Valve Manufacturing Co., Ltd
Pneumatic film spreading discharge valve
NegotiableUpdate on 04/29
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Overview
Pneumatic film upward discharge valve FL641F stainless steel pneumatic upward discharge valve FL641W pneumatic kettle bottom discharge valve/pneumatic tank bottom discharge valve/pneumatic reaction kettle bottom valve/polymerization kettle pneumatic stainless steel discharge valve/reaction kettle pneumatic regulating valve/pneumatic discharge valve/pneumatic downward discharge valve/pneumatic hand-operated discharge valve/pneumatic explosion-proof discharge valve/pneumatic hand-operated automatic discharge valve It is mainly used for bottom discharge, discharge, sampling, and no dead zone shut-off operations of reaction kettles, storage tanks, and other containers. By welding the bottom flange of the valve to the bottom of the storage tank and other containers, the residual phenomenon of process medium at the outlet of the container is eliminated.
Product Details
Product Name:FL641F Pneumatic Upward/Downward Discharge Valve FL641W
Product Introduction
Pneumatic film spreading discharge valveFL641FStainless steel pneumatic upward expansion discharge valveFL641WPneumatic bottom discharge valve/Pneumatic tank bottom discharge valve/Pneumatic reaction kettle bottom valve/Pneumatic stainless steel discharge valve for polymerization kettle/Pneumatic control valve for reaction kettle/Pneumatic discharge valve/Pneumatic downward expansion discharge valve/Pneumatic belt with manual discharge valve/Pneumatic explosion-proof discharge valve/Pneumatic automatic discharge valveIt is mainly used for bottom discharge, feeding, sampling, and dead zone shutdown operations of reaction vessels, storage tanks, and other containers. By welding the bottom flange of the valve to the bottom of the storage tank and other containers, the residual phenomenon of process medium at the outlet of the container is eliminated. The discharge valve is designed with a flat bottom structure and a V-shaped valve body according to the actual situation, and provides two working modes of valve discs: lifting and lowering. The inner cavity of the valve body is equipped with a corrosion-resistant and erosion resistant sealing ring, which can protect the valve body from being eroded and corroded by the medium when the valve is opened. The sealing ring is specially treated to achieve a surface hardness of HRC56-62, with high wear resistance and corrosion resistance functions. The valve disc seal is welded with hard alloy on the cover surface as needed, and the sealing pair adopts line sealing to ensure the reliability of the seal and prevent scarring. Simultaneously adopting a short stroke valve disc design.
Structural principle:
1. The discharge valve is composed of a valve body, valve disc, valve stem, positioning screw, sealing ring, pneumatic stroke mechanism or electrical installation mechanism, etc.
2. The principle is to push the valve disc up and down through the valve stem, thereby achieving the purpose of opening and closing.
3. The upward facing handwheel rotates clockwise, the valve stem rises, and the valve closes; When the handwheel is reversed, the valve stem descends and the valve closes.
Difference between upward and downward discharge valves:
1. The discharge valve is mainly used for discharging materials from the bottom of storage tanks, reaction vessels, and other containers. The valve is connected to the equipment with flanges or butt welding and located at its bottom, eliminating the residual phenomenon of process media at the outlet of the container.
2. According to the actual situation, it can be divided into three structural forms: upward expansion type, downward expansion type, and plunger type. The upward expansion type is used for discharging materials from reaction vessels with agitators (except for frame anchor type); And the downward expansion type and plunger type are used for feeding the reaction kettle of the frame anchor stirrer.
3. The sealing surface is made of materials that are resistant to erosion and corrosion, and has undergone special treatment to achieve a surface hardness of HRC48-52. It has high wear resistance and corrosion resistance, ensuring the sealing reliability of the valve.
4. Widely used in industries such as chemical, petroleum, metallurgy, pharmaceuticals, dyes, and food processing.
Technical Specifications:
1. Corrosion resistance.
2. The general working temperature of stainless steel is ≤ 150 ℃.
3. Pressure range: 0.6-2.5MPa.
4. Diameter range: 25-250mm.
Valve pneumatic device:
1. Valve pneumatic drive devices are safe, reliable, low-cost, and easy to use and maintain, making them a major branch of valve drive mechanisms. 2. The working pressure used in pneumatic technology is relatively low, usually greater than 0.82MPa, and due to the structural size not being too large, the total thrust of the pneumatic device cannot be very large.
Pneumatic device usage conditions:
Working pressure of gas source |
0.4～0.7MPa |
Environmental temperature and medium temperature |
5～60℃ |
Piston working speed and blade outer line speed |
10～500mm/s |
Electromagnetic control signal current |
4～20mA |
Classification of pneumatic devices:
Valve pneumatic devices are divided into three types according to their structural characteristics: thin film pneumatic devices, cylinder type pulling devices, and pendulum pneumatic devices. In addition, there is a pull-out motor type pull-out device.
Composition of pneumatic device:
Thin film type |
Cylinder type |
Swing type |
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Thin film cylinder |
diaphragm |
spring |
piston rod |
cylinder |
Pistons and piston rings |
piston rod |
Manual operating mechanism |
Pneumatic accessories |
cylinder block |
stator |
rotor |
blade |
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Disc-shaped membrane |
flat diaphragm |
Single cylinder |
Dual cylinder |
O-ring |
J-shaped sealing ring |
U-shaped sealing ring |
V-seal |
Y-shaped sealing ring |
Loop system |
Signal Returner |
air filter |
Pressure regulating valve oil mist device |
Control directional valve |
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Main component materials:
Part Name |
ZG1Cr18 Ni9Ti series |
ZG00Cr18 Ni10 series |
ZG1Cr18 Ni12MO 2 Ti 系列 |
ZG00Cr17Ni14MO 2 series |
WCB series |
Valve body/valve cover |
ZG1Cr18 Ni9Ti |
ZG00Cr18 Ni10 |
ZG1Cr18 Ni12MO 2 Ti |
ZG00Cr17Ni14MO 2 |
WCB |
valve stem |
ZG1Cr18 Ni9Ti |
ZG00Cr18 Ni10 |
ZG1Cr18 Ni12MO 2 Ti |
ZG00Cr17Ni14MO 2 |
WCB |
valve disc |
ZG1Cr18 Ni9Ti |
ZG00Cr18 Ni10 |
ZG1Cr18 Ni12MO 2 Ti |
ZG00Cr17Ni14MO 2 |
WCB |
shim |
304+PTFE |
304L+PTFE |
316+PTFE |
316L+PTFE |
Graphite+304 |
stud |
1Cr17Ni2 |
1Cr17Ni2 |
1Cr17Ni2 |
1Cr17Ni2 |
35CrMoA |
nut |
1Cr18 Ni9Ti |
1Cr18 Ni9Ti |
1Cr18 Ni9Ti |
1Cr18 Ni9Ti |
45 |
Connection size:
|
caliber
DN(mm)
|
Exhibition style |
Exhibition style |
||||||
D |
D4 |
H |
DO |
D |
D4 |
H |
DO |
|
25 |
115 |
115 |
270 |
160 |
115 |
135 |
225 |
160 |
32 |
135 |
135 |
285 |
160 |
135 |
145 |
300 |
160 |
40 |
145 |
145 |
355 |
180 |
145 |
160 |
340 |
180 |
50 |
160 |
160 |
370 |
180 |
160 |
180 |
345 |
180 |
65 |
180 |
180 |
465 |
220 |
180 |
195 |
425 |
220 |
80 |
195 |
195 |
480 |
250 |
195 |
215 |
445 |
250 |
100 |
215 |
215 |
590 |
280 |
215 |
260 |
535 |
280 |
125 |
245 |
245 |
730 |
300 |
245 |
280 |
585 |
300 |
150 |
280 |
280 |
775 |
320 |
280 |
335 |
665 |
320 |
200 |
335 |
335 |
900 |
360 |
335 |
405 |
800 |
360 |
250 |
405 |
405 |
1035 |
500 |
405 |
460 |
945 |
500 |
Shanghai Rongti Valve Co., LtdMain production and sales【Pneumatic film spreading discharge valveFL641FStainless steel pneumatic upward expansion discharge valveFL641WPneumatic bottom discharge valve/Pneumatic tank bottom discharge valve/Pneumatic reaction kettle bottom valve/Pneumatic stainless steel discharge valve for polymerization kettle/Pneumatic control valve for reaction kettle/Pneumatic discharge valve/Pneumatic downward expansion discharge valve/Pneumatic belt with manual discharge valve/Pneumatic explosion-proof discharge valve/Pneumatic automatic discharge valve】The company always adheres to the business philosophy of "technology as the guide, quality as the guarantee, integrity as the criterion, and service as the goal", upholds the principle of "adapting to and meeting the market", adheres to the belief of "integrity-based, attentive service", pursues quality, strives for excellence, is fast and pragmatic, and strives to provide reliable products and services for new and old customers, creating value for customers.
