XITA, a leading manual butterfly valve factory, produces high-performance PPH Manual Butterfly Valves with 2.5-6.4MPa mid-pressure resistance and centre sealing technology. Made from 100% virgin PPH, these valves feature EPDM/FPM sealing rings, welding connections, and zero leakage performance, ideal for water treatment, chemical dosing, and industrial fluid control. With -20°C to 95°C thermal stability, 30% lower flow resistance than metal valves, and compliance with SGS/CE certifications, they ensure corrosion resistance, oxidation prevention, and long-term durability. Customizable DN25-DN700 sizes and global export support. Request quotes for PPH butterfly valves now!