Butterfly Valves

Discover Pipestock’s robust range of PPH butterfly valves designed specifically for handling hot corrosive liquids in industrial, chemical processing, water treatment and manufacturing applications. Engineered from high-grade Polypropylene Homopolymer (PPH), these butterfly valves deliver exceptional chemical resistance, long-lasting performance and reliable shut-off in aggressive environments where metal valves would quickly degrade.

Our PPH butterfly valves are available with two seat materials - EPDM (Ethylene Propylene Diene Monomer) and FPM (Fluoroelastomer) - allowing precise selection based on fluid characteristics, temperature ranges and sealing requirements. Whether you need a cost-effective sealing solution for general corrosive service or higher temperature compatibility and superior chemical resistance, Pipestock has the right option.

PPH butterfly valves combine lightweight construction with outstanding durability, making them ideal for pipelines carrying acids, alkalis, solvents and other aggressive media. Key benefits include:

• Exceptional corrosion resistance: PPH resists a wide range of chemicals that attack metals and standard plastics
• Thermal stability: Designed to handle elevated fluid temperatures common in chemical dosing and processing systems
• Low maintenance: Smooth valve body and seat profiles reduce build-up and simplify cleaning
• Smooth operation: Quarter-turn actuation with manual lever or gear options ensures quick open/close cycles

• Material: PPH (Polypropylene Homopolymer) body
• Seat Options: EPDM or FPM elastomer
• Connection Styles: Flanged
• Operation: Manual lever, gearbox, pneumatic or electric actuator options
• Temperature & Pressure: Engineered for hot corrosive liquids - consult technical data for specific limits

Our PPH butterfly valves with EPDM seats are ideal for applications involving hot corrosive liquids, aqueous solutions, mild acids and alkalis. EPDM offers excellent resilience and sealing performance across a broad temperature range and is especially suitable where steam, hot water and chemical resistance are essential. The elastomeric EPDM seat ensures tight shut-off, minimising leakage and improving system efficiency.

Key features of EPDM seated valves:

• Excellent sealing for general corrosive services
• Good resistance to hot water, steam and alkaline solutions
• Flexible and durable elastomer suited to frequent cycling

For more demanding chemical environments, particularly where high temperatures and aggressive organic chemicals are present, choose our FPM seated PPH butterfly valves. FPM (also known as Viton) offers superior chemical compatibility and high-temperature resilience compared with standard elastomers, making these valves suited to harsh industrial fluids and specialised process applications.

Benefits of FPM seats include:

• Broad chemical compatibility, including with solvents and hydrocarbons
• Higher continuous temperature capability
• Durable sealing under challenging process conditions

PPH butterfly valves with EPDM or FPM seats are widely used in:

• Chemical processing and dosing systems
• Hot corrosive liquid transfer lines
• Water and wastewater treatment
• Industrial plant process piping
• Neutralisation and pH control systems
• Cooling system circuits with aggressive fluids