Concentric Design
Rubber-seated Butterfly Valve

The Concentric Butterfly Valve is a versatile, cost-effective solution for flow control in general-purpose water, HVAC, and industrial applications. With a centered disc and resilient rubber seat, this valve provides dependable, bi-directional sealing and straightforward operation. Its compact design and ease of installation make it ideal for systems where space, reliability, and low maintenance are key considerations.

Features & Benefits

Resilient Rubber Seated Design
A molded-in or replaceable rubber liner ensures tight, leak-free sealing in both flow directions, even at low pressures.

Concentric Disc Configuration
The centered disc shaft design ensures smooth operation and consistent sealing performance, making it ideal for clean and lightly contaminated fluids.

Lightweight & Space-Saving
Compact body design reduces weight and footprint, simplifying installation in tight piping systems and reducing structural load.

Reliable Shutoff Performance
Excellent sealing capabilities across a wide pressure range, making it suitable for isolation and throttling functions.

Corrosion-Resistant Materials
Available in a range of body and disc materials with EPDM, NBR, or other rubber linings for compatibility with water, air, oils, and mild chemicals.

Low Operating Torque
Minimal friction between disc and seat reduces actuation force, enabling use with manual handles or compact actuators.

Easy Maintenance
Simple construction allows for quick replacement of seat and disc components, minimizing downtime and service costs.

Ideal for General-Purpose Use
Perfect for water treatment, distribution systems, fire protection, HVAC, and light-duty industrial processes.

Performance Parameters

Design Standards: BS, EN, ISO, MSS, SHELL

Diameter Range: DN50–DN1200 (NPS 2–NPS 48)

Pressure Range: PN6–PN16 (CLASS 150)

Connection Types: wafer, lug

Main Materials: Cast iron, carbon steel, stainless steel

Sealing Materials: EPDM, NBR

Temperature Range: -29°C to +120°C

Applicable Media: Potable water, raw water, process water, wastewater, air, gases

Operation Methods: Worm gear, electric, pneumatic, hydraulic