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Oil & Gas > Piping and valves
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Business Type: Manufacturer
Main Products:Control ValvesBall ValvesButterfly Valvesself-operater valvesBellow Seal ValveAir Control ValvesBalancing ValvesAngle Valves
ID:20102024481
Category: Oil & Gas Piping and valves
MOQ:1.00 Piece(s)
butterfly valveconcentric butterfly valveRubber-lined butterfly valveFluorine-lined butterfly valve
L/CT/TWestern Union
General
ZSHWE/ ZDRWE Series triple offset butterfly valve provides a bidirectional bubble tight shut-off to API 598. This geometry ensures that the disc seal contacts the seat only at the final shut-off position without rubbing or galling, providing a torque generated resilient seal with sufficient “wedging” to ensure a uniform seal contact. Our butterfly valves are widely used in the chemical, power, light textile, food, pharmaceutics, pulp and paper and other severe application.
Specification:
Nominal Pressure: Class 150lb,300lb；
Nominal diameter range:DN80～1200（3”～48”）；
Fluid temperature range:-60～+450℃；
Flow characteristic is approximate equal percentage.
Characteristics
l One-piece casted body with the feature of compact structure and lightweight；
l The triple offset valve advanced design features three-way eccentricity and unique elliptical seat geometry ensuring compressive sealing around the entire seat and a tight, bubble free valve.
l Sealing ring design is novel, concise, free repair；
l Stainless steel and graphite laminated seal ring provides reliable, zero leakage, bi-directional shutoff；
l Triple offset structure ensure non-rubbing rotation, minimizing torque required and maximizing seat/seal ring lifetime；
Structure Drawing
Table 1
Item | Part | Materials |
1 | Seat | 304、316+STL |
2 | Laminated seal ring | 304+Graphite、304+PTFE |
Metal to metal seat ring | 304、316+STL | |
3 | Cover | ZG2Cr13 |
4 | Body | WCB、CF8、CF8M |
5 | WCB、CF8、CF8M | |
6 | Retaining ring | WCB、CF8、CF8M |
7 | Disc | WCB、CF8、CF8M |
8 | Stem | 2Cr3、17-4PH |
9 | Bearing | QAL9-4 |
Basic structure and sealing ring type
C. Offset principle
1、 Body 2、Stem 3、Disc 4、Seat 5、Retaining plate 6、Sealing ring 7、Sealing ring retaining plate | Multi-layer composite sealing ring and metal to metal sealing ring
1、Retaining plate 2、Seat 3、Sealing ring retaining plate 4、Body 5、Disc 6、Laminated sealing ring 7、Metal to metal sealing ring |
The triple offset geometry： Offset 1: the shaft is offset behind the seat axis to allow complete sealing contact around the entire seat. Offset 2: the shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve; Offset 3: the seat cone axis is offset from the shaft centerline to eliminate friction during closing and opening and to achieve uniform compressive sealing around the entire seat.
Leakage Class: Laminated seal ring: leakage class is Ⅵ； Metal to metal sealing ring: leakage class is V。 |
Main Performance Parameter
Table 2
Item | Description | Pneumatic triple offset butterfly valve | Electric triple offset butterfly valve | |
1 | Basic error＜(%) | ±2.5 | ±2.5 | |
2 | Hysteresis＜(%) | 2.5 | 2.0 | |
3 | Dead zone＜(%) | 2.0 | 3.0 | |
4 | Travel difference between start and end＜(%) | Start | ±2.0 | ±1.5 |
End | ||||
5 | Rated angle deviation＜(%) | +2.5 | +0.5 | |
6 | Rated flow coefficient deviation＜(%) | +10 | ||
Specification and Technical Data
Table 3 Rated flow coefficient
DN(mm) | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | |
Rated Kv | 200 | 405 | 620 | 1150 | 2030 | 3150 | 4550 | 6200 | 8100 | |
Pneumatic | Single acting | 100 | 100 | 125 | 143 | 160 | 190 | 210 | 240 | 270 |
Torque（Nm） | 50 | 50 | 100 | 200 | 300 | 400 | 600 | 1000 | 1600 | |
Double acting | 83 | 83 | 100 | 125 | 143 | 160 | 190 | 210 | 240 | |
Torque（Nm） | 50 | 50 | 100 | 200 | 300 | 400 | 600 | 1000 | 1900 | |
DN(mm) | 450 | 500 | 600 | 700 | 800 | 900 | 1000 | 1200 | |
Rated Kv | 10260 | 13500 | 19800 | 27000 | 35700 | 44600 | 55080 | 81000 | |
Pneumatic | Single acting | 370 | 300 | 300 | 350 | 400 | HAW35S | HAW40S | HAW50S |
Torque（Nm） | 1600 | 2000 | 2000 | 2500 | 3500 | 5500 | 8100 | 14800 | |
Double acting | 240 | 240 | 240 | 270 | 300 | 350 | 400 | HAW35 | |
Torque（Nm） | 1900 | 1900 | 1900 | 2600 | 3500 | 5700 | 8500 | 16000 | |
Table 4 Specification
DN(mm) | DN80～1200（3”～48”） |
PN(MPa) | 0.6、1.0、1.6、4.0（150lb、300lb） |
Inherent flow characteristic | EQ% |
Inherent adjustable ratio R | 50 |
Rated angle（°） | 80 |
Pneumatic actuator type | Single acting、Double acting |
Supply air pressure（MPa） | 0.5Mpa |
Voltage | 220V.AC 50Hz 380V.AC 50Hz（Three-phase） |
Input signal | 4～20mA.DC、0～10mA.DC、1～5V.DC or above signal section control |
Connection type | Flange：Flange standard HG/T20592-2009 |
Working temperature(℃) | Carbon steel：-20～425℃、Stain steel：-40～595℃ |
Pressure & Temperature Rating
Table 5 Unit：kgf/cm2
Temperature | PN16 | PN40 | PN64 | |||
WCB | CF8 | WCB | CF8 | WCB | CF8 | |
-196～-20 | — | 16.0 | — | 40.0 | — | 64.0 |
-20～100 | 16.0 | 16.0 | 40.0 | 40.0 | 64.0 | 64.0 |
150 | 16.0 | 16.0 | 40.0 | 40.0 | 64.0 | 64.0 |
200 | 16.0 | 16.0 | 40.0 | 40.0 | 64.0 | 64.0 |
250 | 14.0 | 15.0 | 36.0 | 38.0 | 56.0 | 60.0 |
300 | 12.5 | 14.0 | 32.0 | 36.0 | 50.0 | 56.0 |
350 | 11.0 | 13.2 | 28.0 | 34.0 | 45.0 | 53.0 |
400 | 10.0 | 12.5 | 25.0 | 32.0 | 40.0 | 50.0 |
425 | 9.0 | 12.0 | 22.0 | 30.7 | 36.0 | 48.4 |
450 | 6.7 | 11.5 | 17.0 | 29.5 | 26.5 | 46.8 |
500 | — | 10.5 | — | 26.5 | — | 42.5 |
525 | — | 9.9 | — | 24.6 | — | 39.2 |
560 | — | 9.0 | — | 22.0 | — | 36.0 |
Working Temperature & Leakage Rating
Table 6
Body | WCB、CF8、CF8M |
Seat | 304、316、316+STL |
Sealing ring | Multi-layer composite sealing ring、SS+STL |
Rataining ring | WCB、CF8 |
Packing | PTFE、Graphite |
Gasket | Graphite spiral wound gasket、PTFE gasket |
Leakage Class | |
Metal to metal sealing ring：Ⅴ | |
Leakage Rate （L/h） | Laminated sealing ring：micro bubble |
Metal to metal sealing ring：1.8×10-7×△P×D | |
Temperature Range（℃） | -20～200、 -40～450 |
1.Q: Are you a manufacturer or trading company ?
A: we are valve manufacturer and factory ,and not trading company.
2. Q: Do you have agent or representative abroad?
A: We have agent in Russia and Kuwait and so on.
3. Q: What's your product range?
A: We can produce Control Valve, Butterfly Valve, Self Operated Valve,Ball Valve, Actuator and Air cylinder etc.
4. Q: Is there any stock in your factory? and how about your lead time?
A: We stock valves with normal sizes. The lead time depends on your quantity,generally 30-60 days.
5. Q: Which countries do you export to ?
A: We export directly to vast majority of countries in the world.
6. Q: What certificates will you provide ?
A: We can provide API-6D/TRCU010 and TRCU certificates/ECM/API STD 607/Certificate of Quality System Approval /SIL/DUNS/ISO9001......
7. Q : How do you control the quality of the product?
A: Adheres to strict quality control procedures that begin with product design and carry through to the end of the production process using state-of-the-art quality control equipment
8.Q : How to ship the goods?
A: We can arrange the shipment for your, you just need to tell us your convenient seaport or airport; we can help to ship the goods by your agent as well.
Business Type:Manufacturer
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