The primary use of a butterfly valve gasket is to provide a tight, bubble-proof seal around the perimeter of a butterfly valve disc when it is in the closed position. It serves a critical dual purpose: first, it isolates the fluid medium from the metal valve body to prevent internal corrosion and wear; second, it often extends over the valve face to act as a flange gasket, eliminating the need for additional flat gaskets between the pipe flanges and ensuring complete external leak prevention.

Applications

1. What materials are most commonly used for Kriloha butterfly valve gaskets?

We manufacture these seats in a variety of industrial-grade elastomers. EPDM is standard for water, wastewater, and HVAC applications. Nitrile (NBR) is the preferred choice for environments involving oils, fuels, and petroleum-based fluids. For highly corrosive chemicals or extreme temperatures, we offer premium FKM (Viton) and PTFE-lined rubber options.

2. What is the difference between a replaceable seat and a bonded seat?

A replaceable seat (often called a boot or liner) is a separate, molded rubber component that slips into the valve body and can be swapped out during maintenance, reducing long-term replacement costs. A bonded seat is vulcanized directly onto the metal valve body; this is typically used in high-vacuum or high-pressure applications to prevent the seat from shifting or getting sucked out of place.

3. How do I know when it is time to replace my butterfly valve gasket?

Key indicators of gasket failure include visible leaks around the mating flanges or valve stem, a loss of line pressure, the inability of the valve to fully shut off fluid flow, or a sudden increase in the torque required to operate the handle. During routine maintenance, you should inspect the rubber liner for signs of cracking, swelling, erosion, or tearing.

4. Can these gaskets handle bi-directional fluid flow?

Yes, our premium butterfly valve gaskets are molded with a resilient, precision-engineered profile that ensures absolute bi-directional shutoff. This means the gasket can effectively block the flow of liquids or gases and maintain its seal regardless of which direction the line pressure is originating from.

5. Do you offer custom sizes to fit specific OEM valve brands?

Absolutely. Because valve body dimensions can vary by manufacturer, Kriloha Gaskets can supply custom-molded butterfly valve seats designed to match specific dimensional standards and stem configurations. We accommodate various body styles, including wafer, lug, and double-flanged designs, ensuring a seamless fit for your specific piping infrastructure.