离岸价格
Get Latest Price100 ~ 1000 / Piece
|1 Piece Minimum Order
国:
China
モデル番号:
APV-10
离岸价格:
100 ~ 1000 / Piece Get Latest Price
ロケーション:
-
最低注文量の価格:
100 per Piece
最低注文量:
1 Piece
パッケージの詳細:
WOODENCASE
納期:
10
供給能力:
10000 Piece per Week
支払いタイプ:
T/T, L/C, Western Union
製品グループ :
-
China
連絡先担当者 Yankai
Zhengzhou, Henan
Air Pinch Valve
Air Pinch Valve Overview:
Air Pinch valve, the simplest valve design, include any valve with
a flexible elastomer body that can be pinched close to cut off
flow, using a mechanism or fluid pressure. Air Pinch valves are
linear motion valves that can be used to start, stop and throttle
media through a system. Air Pinch valves are low maintenance, low
weight, and can be used in systems requiring explosion-proof line
closure. While the design of air pinch valve provides extensive
advantages for use in sterile lines and in situations where product
purity is a high priority, these same design features do create
some disadvantages. Due to their elastomeric bodies, air pinch
valve are not viable in situations where the transport media is at
a high temperature. Air pinch valve are also not recommended for
services that require high-pressure flow, and for use with
gases.
Air Pinch Valve Features:
1. Advantages
1. Very Clean
2. Excellent drainage
3. Minimal turbulence
4. Low airborne contaminants
5. Low maintenance
6. Low weight
7. Can be used in explosion-proof lines
8. Inexpensive
2.
Disadvantages
1. Cannot be used in high temperature applications
2. Cannot be used in high pressure applications
3. Cannot be used with gas media
Pinch Valve Method of
Control:
1. Pinch valves use a liner motion method of control.
2. The disc is a flexible material liner, similar to a
diaphragm.
3. The stem of the pinch valve has a free-moving connection to a
moving closure bar, called a compressor, which is located directly
above the liner.
4. As the hand wheel is turned, the compressor lowers the liner to
squeeze the liner against the bottom support to close the
valve.
5. The pressure of the media in the valve can help in starting or
stopping the flow.
Pinch Valve
Function:
Pinch valve can be used for On/Off, as well as throttling
services.
Pinch valve are ideal for on/off services because of their straight
through design that allows for uninhibited flow. Straight through
designs also have very little pressure drop between the inlet and
outlet.
The effective throttling range of a pinch valve is usually between
*0% and *5% of the rated flow capacity. The best flow control is at
the last *0% of the stroke. This is because the smooth walls and
resilience of the liner do not provide a significant pressure drop
until at least *0% of the stroke has been achieved. To avoid using
the ineffective half of the full stroke some pinch valves are
designed for maximum opening at *0%. It is not recommended that
media with sharp particles are throttled close to shutoff. The
particles can scratch the liner, causing grooves that could
potentially tear.
Pinch Valve
Media:
1. Pinch valves can be used for liquid, solid and slurry
applications.
2. The valve can effectively control the flow of both abrasives and
corrosives, as there is no contact between metal parts and the
transport media.
3. Pinch valves have a liner which keeps all moving parts outside
of the flow stream so large particulates can be trapped in the seal
area of the valve without breaking the seal.
4. Due to the isolation of the valve parts from the media these
valves can also be used in applications where corrosion or metal
contamination of the fluid, slurries, sand-entrained water systems,
sewage treatment, and process food might be a problem.
Note: In liquid applications, the liquid must be kept moving so the
displacement of the fluid by the sealing area does not cause
additional strain on the liner and cause it to burst.
国: | China |
モデル番号: | APV-10 |
离岸价格: | 100 ~ 1000 / Piece Get Latest Price |
ロケーション: | - |
最低注文量の価格: | 100 per Piece |
最低注文量: | 1 Piece |
パッケージの詳細: | WOODENCASE |
納期: | 10 |
供給能力: | 10000 Piece per Week |
支払いタイプ: | T/T, L/C, Western Union |
製品グループ : | - |