ZTVK Fluid Control Equipment conveys enterprise-grade sea water butterfly valves built for marine applications. Our valves highlight a "twofold unpredictable + angled seal" plan that diminishes opening torque by 30% and amplifies operational life past 50,000 cycles. With working weights up to PN16 and sizes extending from 1.5" to 48" (DN40-DN1200mm), these valves work proficiently in temperatures from 0℃ to 80℃. Built with corrosion-resistant materials counting duplex steel and specialized EPDM/VITON seating, our butterfly valves outflank conventional cast press options in requesting marine environments.
Our butterfly valves join cutting-edge innovation particularly planned for challenging marine conditions. The spherical-processed valve circle edges experience manual cleaning, guaranteeing smooth operation and expanded seal life. This one-piece plan avoids tidy molecule collection and bacterial development - vital for marine sanitation systems.
The inventive "lean plate plan" increments Cv values by 50% compared to ordinary spindle-through plans. This improvement conveys predominant weight recuperation capabilities whereas keeping up lower weight drops, making our valves really energy-efficient arrangements.
Marine environments demand exceptional material performance. Our sea water butterfly valves utilize premium materials including:
The valve stem and disc surfaces can be coated with nitrile rubber or ethylene propylene rubber, providing additional protection against metal surface erosion and corrosion from saltwater exposure.
We offer multiple actuation methods to suit your specific application requirements:

| Parameter | Specification |
|---|---|
| Size Range | 1.5" - 48" (DN40-DN1200mm) |
| Working Pressure | PN10/PN16 |
| Operating Temperature | 0℃ to 80℃ |
| Body Material | DI/QT450 |
| Disc Material | DI/CF8/CF8M/Aluminum Bronze |
| Seat Material | EPDM/NBR/PTFE/VITON |
| Connection Type | Wafer Type |
| Operation | Manual/Pneumatic/Electric |
| Standards | ISO5211, API, ANSI, JIS, BS, DIN |
The 90-degree opening and closing mechanism ensures rapid valve operation. Minimized operating torque requirements make manual operation effortless while reducing actuator power consumption in automated systems. This design translates to significant energy savings in large-scale marine applications.
Our valves achieve near-zero leakage through precision-engineered sealing systems. The flow characteristics closely approximate linear performance, providing excellent flow control capabilities essential for marine systems requiring precise flow regulation.
These robust valves handle diverse marine applications including:

ZTVK maintains rigorous quality standards through comprehensive certifications including ISO9001, ISO14001, and OHSAS18001. Our manufacturing facility in Tianjin Beichen District features modern CNC machining centers and specialized large-diameter valve processing equipment.
Every valve undergoes thorough pressure testing and material inspection before shipment. We provide complete documentation including test reports, material certificates, and maintenance records - all verifiable through our digital tracking system.

Our proximity to Tianjin Port (50km) ensures efficient shipping logistics. Long-term partnerships with major shipping lines including COSCO and Maersk provide reliable global delivery options with FOB Tianjin Xingang or CIF destination port terms.

We understand that marine applications often require specialized solutions. Our engineering team provides:
Custom branding with your specified logo, nameplate, and packaging requirements to maintain brand consistency across your marine systems.
Complete valve redesign including body structure modifications, alternative sealing materials, and various connection methods (clamp/flange/lug) tailored to specific working conditions.
Your marine systems deserve reliable, high-performance flow control solutions. Our valves combine proven engineering excellence with responsive customer service to keep your operations running smoothly in the most demanding marine environments.

Ready to enhance your sea water butterfly valves systems? Email us at ktec86961886@163.com for expert consultation and competitive pricing.
Send us your valve requirements and our team will provide professional solutions and fast quotations.