Description
Our manual cast iron wafer butterfly valve is a high-performance flow control solution designed for waterworks and general industrial applications. The D71X-16C series features a compact wafer design that delivers reliable shutoff and precise flow regulation while minimizing installation space and weight. This versatile valve is available in both wafer and lug configurations, with soft seal and metal seal options to accommodate diverse operating requirements.
Engineered to meet international standards including GB/T 12238, API 609, and JIS B2071, our cast iron wafer butterfly valves provide exceptional durability and performance across a wide range of temperatures and pressures. Whether used in municipal water distribution systems, industrial processing plants, or commercial facilities, these valves offer a cost-effective and efficient solution for fluid control needs.
Parameter | Details |
|---|---|
Product Type | Manual Wafer Type Butterfly Valve |
Model | D71X-16C |
Nominal Diameter | NPS 2" × NPS 32" (DN50 × DN800) |
Operating Pressure | 1.0-2.5MPa |
Body Material | Cast Iron, Carbon Steel, Stainless Steel |
Trim Material | 304, 316, 316L |
Seat Seal Material | NBR, EPDM, PTFE, etc. |
Connecting End | Wafer |
Design Standard | GB/T 12238, API 609, JIS B2071 |
Face to Face | GB/T 12221, ASME B16.10, JIS B2002 |
End Connection | GB/T 9113, ASME B16.5, JIS B2211 |
Inspection and Test | GB/T 26480, API 598, JIS B2003 |
Operation Device | Handle, worm gear, signal, pneumatic, electric actuator |
The wafer butterfly valve operates using a disc-shaped closure element that rotates 90 degrees around a central stem to open or close the flow path. When the valve is fully open, the disc is aligned parallel to the flow direction, creating minimal pressure drop and allowing maximum flow capacity. As the disc rotates toward the closed position, it gradually restricts the flow until it seats tightly against the valve body seal, providing a bubble-tight shutoff.
The manual operation is achieved through a lever handle for smaller sizes or a worm gear actuator for larger diameters, allowing for precise flow control. The wafer design enables the valve to be sandwiched between two pipeline flanges, eliminating the need for separate valve flanges and reducing overall installation weight and cost.
Compact and Lightweight: The wafer design significantly reduces valve size and weight compared to traditional gate or globe valves, making installation and maintenance easier
Excellent Flow Characteristics: The streamlined disc design provides low pressure drop and high flow capacity, improving system efficiency
Bubble-Tight Sealing: High-quality seat materials ensure reliable shutoff with zero leakage, preventing fluid loss and system contamination
Quick Operation: 90-degree rotation allows for fast opening and closing, reducing response time in emergency situations
Robust Cast Iron Body: Provides excellent strength and corrosion resistance for long service life in water and general industrial applications
Corrosion-Resistant Trim: Stainless steel disc and stem options offer enhanced durability in corrosive environments
Low Maintenance Requirements: Simple design with fewer moving parts minimizes maintenance needs and reduces downtime
Versatile Compatibility: Compatible with a wide range of fluids including water, oil, gas, and various chemicals
Our manual cast iron wafer butterfly valves are widely used across multiple industries for flow control and isolation applications:
Water Treatment and Distribution: Municipal water supply, wastewater treatment, desalination plants
Food and Beverage: Brewing, dairy processing, beverage production, food manufacturing
Chemical and Petrochemical: Chemical processing, oil and gas transportation, refining
HVAC and Building Services: Heating, ventilation, air conditioning systems, commercial plumbing
Pharmaceutical and Biochemical: Pharmaceutical manufacturing, biotechnology processes
Pulp and Paper: Paper manufacturing, pulp processing
Environmental Protection: Air pollution control, waste management systems
Marine and Shipbuilding: Shipboard piping systems, ballast water management
As a leading industrial valve manufacturer with over 20 years of experience, we are committed to delivering high-quality products that meet the most demanding industry requirements. Our cast iron wafer butterfly valves are manufactured in state-of-the-art facilities using advanced production techniques and rigorous quality control processes.
We offer comprehensive customization options to meet your specific application needs, including different body materials, seal materials, and actuation methods. All our valves undergo strict testing in accordance with international standards to ensure reliable performance and long service life. Our dedicated technical support team provides expert assistance from product selection to after-sales service, ensuring you get the right solution for your project.
The maximum operating temperature depends on the seat material selected. NBR seats are suitable for temperatures up to 80°C, EPDM seats up to 120°C, and PTFE seats up to 180°C.
Yes, our wafer butterfly valves are designed for both on-off service and throttling applications. The 90-degree rotation allows for precise flow regulation across the entire operating range.
Wafer type valves are sandwiched between two pipeline flanges using through-bolts, while lug type valves have threaded lugs that allow for installation using stud bolts, making them suitable for dead-end service where one side of the pipeline may need to be disconnected.
Yes, we offer valves with NSF-approved materials for potable water applications. Please specify your requirements when placing your order.
In addition to manual operation with lever handle or worm gear, we can supply these valves with pneumatic, electric, or signal actuators for automated control systems.
