Butterfly Valve
C Tech fully introduced and absorbed the design and manufacture experiences from the world’s famous professional butterfly manufacture. Combine with the local strengthens and innovation, C Tech innovated many new techs to increase the function and performance of the butterfly valve. Our Butterfly Valve design by unique metal sealing elements provide zero leakage through 90-degree rotation across a wide range of pressure and temperature conditions. For example, we successfully innovated the Triple Offset Butterfly Valve of Class2500, and used by the customers without any problem for 2 years. C Tech Butterfly valve is characterized by compact structure, excellent performance and long service life. It can be widely used in Oil & Gas, Chemical.
C-Tech Company resilient seated butterfly valves are widely used in various industries for both on-off and regulating service. Compared with traditional globe & ball valve, butterfly valve is less weight and cost-effective. With the rapid development on various elastomer materials, resilient seated butterfly valves are now used not only for water system but also for various chemical industries. C-Tech resilient seated butterfly valves are designed in accordance with API 609 with axes of body, stem and disc concentric.
| Size | 2~72” (DN50~DN1800) | |
| Rating | 150 ~ 232Psi (PN10~ PN16) | |
| Body Material | Cast Iron, Cast Steel, Stainless Steel | |
| Seat Materials | EPDM, NBR, VITON | |
| End Connection | Wafer, Lug, Double Flange | |
Design Feature |
Concentric design | Bi-directional service |
| Zero leakage & Low torque | Self – cleaning & Blowout-proof stem | |
| ISO 5211 top flange | Optional extended stem design | |
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C – Tech Company double offset butterfly valves can achieve zero leakage easily and ensure sealing more reliable because of the resilient seat design. Resilient seat design also can achieve low torque so as to cost-effective of choosing actuator. Soft materials such as PTFE have excellent applicability to acid or other media, thus its use improves applicability of valves to various services.
| Size | 2~72” (DN50~DN1800) | |
| Rating | 150~600LB (PN10~PN100) | |
| Body Material | Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel | |
| Seat Materials | NBR, EPDM, VITON, PTFE, RPTFE | |
| End Connection | Wafer, Lug, Double Flange | |
Design Feature |
Double block and bleed | Zero leakage & ISO 5211 top flange |
| Less seat wear, Low torque | Super long usage life | |
| Self-driven machinery sealing structure | Optional low emission packing | |
| Optional fire safe design | Optional various seat materials | |
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C – Tech Company triple offset butterfly valves are designed in accordance with API 609 with features of bi-directional, lightweight, cost-effective and low torque. For triple offset butterfly valves, the working temperature range is -196℃~ 816℃ and there’re various materials for option. In many industries, triple offset butterfly valves can be used not only on-off but also regulating the flow, thus it’s replacing traditional gate, globe & ball valves.
| Size | 2” ~120” (DN50~DN3000) | |
| Rating | 150~2500LB (PN10~PN400) | |
| Body Material | Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel | |
| Seat Materials | Graphite laminated, Metal-to-metal | |
| End Connection | Wafer, Lug, Double Flange, BW | |
Design Feature |
Frictionless closure | Super long usage life |
| Double block and bleed | Blowout-proof stem | |
| SO 5211 top flange | Fire safe design & Optional stellited seat | |
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C – Tech cryogenic butterfly valves are suitable for the service of working temperature down to －196℃ such as LNG, LPG and air separation industry.
| Size | 2~48” (DN50~DN1200) | |
| Rating | 150 ~ 600LB (PN20~ PN110) | |
| Body material | Stainless Steel, Cryogenic Alloy Steel, Dual-Stainless Steel | |
| Seat materials | Stainless Steel, Cryogenic Resistant Nonmetal Seal Ring/Seat | |
| End connection | Wafer, Lug, Double Flange | |
| Design Feature |
Double/trip offset is optional | Stuffing box raising design |
| Low leakage stuffing | Sealing surface bead welding hard alloy | |
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