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English Views: 3 Author: Site Editor Publish Time: 2026-03-06 Origin: Site
The wafer butterfly valve is a compact and versatile valve designed to control flow in pipelines. It consists of a rotating disc mounted on a shaft, which opens or closes the flow with a simple quarter-turn.
Wafer butterfly valves operate on the same principle as other butterfly valves. Their unique design allows them to be sandwiched between two pipe flanges, making them ideal for pipelines with limited space. Common body materials include ductile iron, carbon steel, and stainless steel, with seats made of EPDM, NBR, or PTFE to suit various media such as water, air, oil, and mild chemicals.
✓ Space-saving design: Fits neatly between two flanges, ideal for compact pipeline layouts.
✓ Cost-effective solution: Lightweight and requires less material compared to flanged valves.✓ Versatile operation: Can be operated manually with a lever or gear, or automated using electric actuators or pneumatic actuators.
✓ Durable and reliable: Resistant to corrosion when paired with suitable body and seat materials, ensuring long-term sealing performance.
✓ Low maintenance: Simple structure with fewer components makes inspection, cleaning, and seat replacement easier.
Understanding the differences between wafer, lug, flanged, and clamp (sanitary) butterfly valves helps us choose the right valve for our application:
| Valve Type | Connection & Installation | Advantages | Typical Use Case |
| Wafer | Sandwiched between flanges | Compact, lightweight, easy to install | Standard industrial pipelines, HVAC, water treatment |
| Lug | Bolted on each side, can remove one side | Can be removed without disturbing the other pipeline | Moderate pressure pipelines requiring maintenance flexibility |
| Flanged | Full flanged connection | Strong and stable, suitable for high pressure | Long pipelines, high-pressure or critical applications |
| Clamp / Sanitary | Quick-clamp assembly | Hygienic, easy cleaning, fast installation | Food, beverage, pharmaceutical pipelines (use sanitary design only) |
Wafer butterfly valves are widely used across industrial pipelines due to their versatility and efficiency:
✓ Water Treatment & Supply – Municipal water systems, wastewater pipelines.
✓ Chemical & Petrochemical – Corrosion-resistant valves for moderate chemical media.
✓ HVAC Systems – Airflow control in heating, ventilation, and cooling systems.
✓ Oil & Gas – Low-pressure pipelines and process systems.
✓ Shipbuilding & Marine – Piping systems for ballast, cooling, and fuel handling.
SLVCN's wafer butterfly valves are trusted by customers in over 100 countries worldwide, widely used in water treatment, shipbuilding, chemical, and industrial pipelines. Our valves are made from durable materials and available in a wide range of sizes and pressure ratings, tailored to your specific application.
We also offer customized solutions and OEM services, ensuring that each valve meets your unique project requirements. With rigorous quality control and years of export experience, SLVCN delivers reliable, high-performance wafer butterfly valves for industrial pipelines around the globe.
This article is part of SLVCN's Valve Knowledge Series, where we share practical insights on valve selection, operation, and automation.
Read our previous posts:
Quick Guide to Butterfly Valve: Parts, Working Principle, and Applications
Buyer's Guide To Butterfly Valves: Which Type Do You Really Need?
How to Select the Right Butterfly Valve Body Material for Your Project
Choosing the Right Butterfly Valve Seat Material for Long-Term Performance
