"M" Expansion Plate Valve

WEFICM Expansion Plate Valves for High-Performance Pipeline Systems
(API 6A PSL3G/PR1 Certified | 20K PSI Rated | Split-Expansion Technology)

Product Overview

Our WEFICM expansion plate valves (2-1/16" to 7-1/16") revolutionize pipeline thermal management with split-expansion plate technology, delivering low-torque operation (<50 Nm) and 90% reduced wear during cycling. Engineered for -75°F to 350°F (K-X grade) and 20,000 PSI conditions, these valves are ideal for refinery transfer lines and high-pressure steam systems.

Key Features & Benefits

1. Advanced Split-Expansion Design

• Dual-Plate Structure: Independent thermal expansion of upper/lower plates eliminates binding under ΔT > 400°F.
• Wear Reduction: Stellite 6-coated sliding surfaces achieve 500,000+ cycles in abrasive media (per API 6A Annex B).

2. Extreme Environment Adaptability

• Pressure-Temperature Range:
  • 2-20,000 PSI with full-bore flow (API 6A Class 2500)
  • Cryogenic to High-Temp: AA-EE materials including NACE MR0175-compliant alloys
• Zero-Leak Seals: Pressure-energized graphite seals maintain integrity after thermal shock cycling.

3. Compliance & Customization

• Certifications: API 6A PSL1-PSL3G, PR1 Performance Level, ISO 10423 compliant.
• Connection Options:
  • Flanged (ASME B16.5) for fast installation
  • Butt-weld ends for permanent piping

Technical Specifications

SEO-Optimized Keywords

"API 6A Expansion Plate Valve," "20K PSI Split-Plate Design," "Low-Torque Pipeline Valve," "Thermal Shock Resistant Valve," "Refinery Steam Isolation Valve."

CTA: Download our thermal expansion whitepaper or request a valve sizing calculator!