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Data Center Resilient Butterfly Valves
250/251 Series

250 PSI Resilient Seated Butterfly Valves
Lug & Wafer | Ductile Iron

Overview  |  Brochure  |  Video (Coming Soon)  |  Data Sheets  |  IOM Manuals  |  3D CAD Files  |  Case Studies

CE, PED, CRN

250/251 Series
Resilient Seated
Data Center Service

(250, 251)

  • Industry Leading 3-Year Limited Warranty
  • 250 Series Wafer Ductile Iron Body sizes 2” – 24”
  • 251 Series Lug Ductile Iron Body sizes 2” – 24”
  • Bi-Directional Shutoff 250 PSI
  • Bi-Directional Dead End Service 250 PSI (Lug only)
  • Install between Standard ANSI class 125/150 flanges
  • 250 Series Wafer also compatible with PN10/PN16 flanges
  • ISO 5211 square drive shaft for optional automation
  • Conforms to MSS-SP-67, MSS-SP-25, API 609
  • Designed for blowout-proof service
  • Permanent Integral Seat Design
  • Vacuum service capable (Please consult factory)

Data Sheets

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IOM Manuals

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3D CAD Models

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Check out these Case Studies!

Chainwheel-Operated Butterfly Valve w/ Add-On Lockout Bucket — Data Center Chilled Water Line 050/051 Series250/251 Series650/651 SeriesCase StudiesGO Series
July 1, 2026

Chainwheel-Operated Butterfly Valve w/ Add-On Lockout Bucket — Data Center Chilled Water Line

A colocation data center needed a reliable way to isolate an 8" chilled water line feeding a critical redundant chiller during maintenance. The existing manual valve had no lockout provision and was mounted in a hard-to-reach spot, making safe LOTO procedures difficult. Max-Air supplied a…
Max-Air Technology
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