Quick Detail
Place of Origin
HS-CODE
84-
Package & Delivery Lead Time
Detailed Description
Size:40-1000
Nominal pressure:PN1.0MPa PN1.6MPa
Temperature:-15～150
Use to: fresh water\ sewage\ sea water\ air\ steam\ food\ medicine\ oils\ acids\ alkalis\ salts\ etc.
Product:
Technical data
Nominal diameter 2"～40" 2"～32"
Nominal pressure 10Bar 16 Bar
Testing pressure Shell 15 Bar 24 Bar
Sealing 11 Bar 17.6 Bar
Working temperature -15～+150
Suitable mediums Fresh water, sewage, sea water, air, steam, food, medicine, oils, acids, alkalis, salts, etc.
Application
The butterfly valve product is ideal for throttling or shutting off the flow of corrosive or in corrosive gases, liquids, semi liquids and solid powder and can be installed in any selected position in pipelines or on vessels in the industries of petroleum processing, chemicals, food, medicine, textile, paper making, hydroelectricity engineering, ship building, water supply and sewage, metallurgy, energy engineering as well as light industry, etc.
Body DISC STEM BUSHING
Material code Material code Material Material
Cast iron Z Plated ductile iron B 1 Stainless steel Lubrizd bronze
Ductile iron Q Aluminum bronze B2 B 2 Carbon steel PTFE
Aluminum bronze T Stainless steel B3 B 3
Stainless steel P
Carbon steel C
Follow Standard
Flange connections Top flange Design Face to face dimension Test insppection
ISO2531PN6,PN10,PN16; ANSI B16.1 Class 125/150; BS 4504; AS2129 Table D and E; JIS B2110; DIN 2501; GB/T 17241.6-98 ISO 5211 API 609; BS 5155; MSS-67; GB12238-89 ISO 5752; GB12221-89 API 598; GB/T13927-92
Features：
1. Small in size and light in weight. Easy installation and maintenance. It can be mounted wherever needed.
2. Simple and compact construction, quick 90degrees on-off operation.
3. Minimized operating torque, energy saving.
4. Bubbles-tight sealing with no leakage under the pressure test.
5. Wide selection of materials, applicable for various medium.
6. Flow curve tending to straight line. Excellent regulation performance.
7. Long service life. Standing the test of tens of thousands opening/closing operations.
Work principle
1. This product mainly consists of body, stem, taper pins, disc, seat luberized bushings worm gear, etc. The rotation of worm gear structure makes stem and disc revolved, which ensures on-off operations and flow control.
2. The rotation of the handle wheel of worm gear ensures dependability and position disc control and position disc control and water flow control. Rotate handle wheel clockwise, the valve is close.
Directions
1. The butterfly valve can be installed on the pipeline, which is at any angle.
2. The valve should be installed in the location being sure to provide convenient operation, maintenance and replacement.
3. As mounting the butterfly valve, fail to consider flow direction of mediums in pipeline, that is to say, the valve can be used in double way.
4. Before installation, the butterfly valve should be stored in warehouse and prevent it from moisture and in so doing, the disc should be kept to open at an angle of 4～5 degree.
5. Before installation, the following processes should be completed:
(1) Check carefully and confirm the operation condition of the valve is in line with the technical specification and requirements.
(2) Clean the disc sealing area and body sealing completely. It is not permitted to open close the disc before cleaning.
(3) Check and confirm the handle is strongly collected to the flange and stem.
6. As mounting the butterfly valve in pipeline, the load for tightening connection bolts should be uniformed.
7. After installed, the disc must be opened in the case of the strength pressure test on pipeline being
carried out.
8. After installed, the valve should be examined regularly. The main items to be checked are as follows:
(1) whether the valve seat and ’O’ sealing ring have been damaged.
(2) Check the sealing effects of the disc sealing area.
(3) After the valve was examined and assembled, no scuffing happens at the time of on-off rotation.
(4) After the valve was examined and assembled, the sealing test should be carried out as the introduction.
(5) After each examination, detailed records should be filed for reference.
0 likes
Click enlarge Image
