1-833-DELVAL1

Series 44-49 High Performance Double Offset

Description:

Fire safe design and NACE versions available.

Body Style Wafer, Lug, Double Flanged
Body CS, SS
Disc CF8M, CF8
Stem 316 SS, 17-4 PH, XM-19
Seat

Ultra

PTFE,

RTFE

Metal (SS, Inconel)

Firesafe

Size Range

Series 44, 45 –  2" to 48“ (DN 50 to 1200)

Series 47, 48 – 2” to 24” (DN 50 to 600)

Series 46 –  3" to 48“ (DN 80 to 1200)

Series 49 –  3" to 24“ (DN 80 to 600)

Pressure Rating

Series 44, 45, 46 - Class 150 

Series 47, 48, 49 - Class 300 

Leakage Class

Soft seat – Class VI 

Metal seat – Class IV

Design Standard

API 609 Category B, BS EN 593

Testing Standard

API 598, BS EN 12266-1

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Features

  • ISO 5211 top plate for direct mounting of a wide range of actuators, handles, and gears
  • Adjustable stem packing features pull down gland with easy access without removal of actuator
  • Tangential wedge pins are offset from center of stem putting them in compression rather than shear
  • Disc stop designed to prevent disc rotation in wrong direction and potential seat damage
  • Retainer clip provides blow-out proof stem
  • Live-loaded stem seal system by a set of Belleville springs. Rocker shaped gland bridge compensates for uneven adjustment of gland bolts
  • “Bear-X” bearing has excellent thermal, chemical and wear resistance
  • One piece body with extended neck
  • Self-energizing flexible lip seal soft seat design. Two points of contact on firesafe metal seat design