W73 butterfly valve

W43 W73 butterfly valve
Comprehensive information of W43/W73 eccentric butterfly valve:
1. Core Features
Structural design:
W43 type: single eccentric structure (valve stem offset from valve plate center), suitable for low pressure differential conditions, with the contact pressure of the sealing surface increasing with the medium pressure.
W73 type: Double eccentric structure (dual offset of valve stem and valve plate), reduces opening and closing friction, extends sealing life, and supports higher pressures (PN16~PN40).
Sealing form:
Optional soft seal (EPDM/NBR) or hard seal (metal overlay), hard seal can withstand temperatures up to 300 ℃.
2. Comparison of Technical Parameters
Model Eccentricity Type Pressure Rating Applicable Temperature Typical Application
W43 single eccentric PN10~PN16-29~150 ℃ water treatment, urban water supply
W73 Double Eccentric PN16~PN40-29~650 ℃ Petrochemical, High Temperature Steam

选型建议