Through pursuit of functions required for butterfly valves, DJ series covers variety of product range to comply with user’s requirements.
Ductile cast iron Butterfly valves (DJ series)
Feature and Specification
| Maximum service pressure | |||
|---|---|---|---|
| ASME 150 | 1.03 MPa | 10K | 1.0 MPa |
| ASME 200 | 1.38 MPa | 16K | 1.6 MPa |
| ASME 250 | 1.72 MPa | 20K | 2.0 MPa |
| PN16 | 1.6 MPa | ||
| PN25 | 2.5 MPa | ||
| Service temperature range | |||
| NBR(Buna-N) seat | 0℃ to +70℃ | ||
| EPDM seat | -20℃ to +120℃ | ||
| Continuous service temperature range | 0℃ to +100℃ | ||
| Applicable standards | |||
| Valve design | API 609, MSS-SP 67, EN 593, JIS B 2032 | ||
| Face to face dimensions | API 609 Category A, MSS-SP 67 W-1: Size 2 to 14 W-2: Size 16 to 24 EN 558 basic series 20, ISO 5752 20 Series, JIS B 2002 46 Series |
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| Coupling flanges | |||
| Wafer type | ASME Class 150/200/250 EN 1092 PN10: DN 50 to DN 350, PN16: All sizes PN25: DN 50 to DN 300 BS 10 Table D/Table E JIS 10K/16K/20K |
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| Lugged type | ASME Class 150/200/250 EN 1092 PN10: DN 50 to DN 150, PN16: All sizes PN25: DN 50 to DN 300 |
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Features
Non-release sheet-to-body structure
Molded (glued) sheet structure is adopted for sizes 2 “to 12”. Larger size valves come with replaceable seats. This non-peeling sheet-to-body construction provides high fluid speed support, vacuum support, and maintenance-free for handling rapidly rising fluid speeds.
* Up to 4 meters per second for on-off service of valves up to size 12 and up to 3 meters per second for sizes 14 and larger.
* Up to 2 30Torr. (Vacuum service is optional for size 14 and larger.)
ong Life Design with Spherical Design of Discs and Sheets
The rubber seat is designed to be spherical in contact with the upper and lower stems. This ensures that the widely designed rubber sheet is protected from peeling and deformation, resulting in a long valve life. Thinner metal disks are the result of experimental research that embody conditions that minimize pressure loss.
Extensive application support
The four discs and two seat materials, and a combination of manual, pneumatic, or electrical actuators, make the applicable applications very versatile.
Integrated ISO5211 Actuator Mounting Flanges
Pneumatic or electric actuators with ISO 5211 mounting flanges can be easily installed on site.
Low valve operating torque
The low operating torque is designed to extend the service life of the valve and to be aware of the total cost optimal valve selection.
(Lightweight design to increase operational efficiency)
It is much lighter than the conventional series, and is designed to be easily attached to piping.
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