The Series RF Flexible Seated Centric Butterfly Valves are highly reliable valves designed for tight shut-off applications. Manufactured under international standards (EN 593, MSS SP-67), each valve is tested for pressure retention, shut-off integrity, and mechanical safety before dispatch.
- Blowout-proof stem retention with stainless steel retainer and internal circlip for safe operation and easy assembly/disassembly
- Inner & outer O-ring stem seals provide enhanced sealing and force absorption
- XCL-R high-strength polymer bearings on drive and non-drive stems reduce friction, eliminate side loading, and extend service life
- Heavy-duty one-piece body with dual-layer zinc phosphate epoxy coating offers superior corrosion resistance; common body design for wafer, lug, and double flanged styles
- SureLok-5™ 5-point anchoring seat design with molded O-ring seals virtually eliminates seat movement, isolating the body and stem from process media
- Spherically machined disc edge reduces seat wear and optimizes flow, allowing fail-closed actuator installation without special precautions
- One-piece stem with ISO Double D drive (up to 12") and round with key design (14"+) ensures universal compatibility
- Extended neck with ISO 5211 top plate allows insulation clearance and direct actuator mounting
- Every valve is precision serialized and leak tested to 110% of rated working pressure ensuring bubble-tight performance
