DELVAL
SERIES 44-49 HIGH PERFORMANCE DOUBLE OFFSET
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βοΈ ISO 5211 top plate for direct mounting of a wide range of actuators, handles, and gears
βοΈ Adjustable stem packing features pull down gland with easy access without removal of actuator
βοΈ Tangential wedge pins are offset from center of stem putting them in compression rather than shear
βοΈ Disc stop designed to prevent disc rotation in wrong direction and potential seat damage
βοΈ Retainer clip provides blow-out proof stem
βοΈ Live-loaded stem seal system by a set of Belleville springs. Rocker shaped gland bridge compensates for uneven adjustment of gland bolts
βοΈ βBear-Xβ bearing has excellent thermal, chemical and wear resistance
βοΈ One piece body with extended neck
βοΈ Self-energizing flexible lip seal soft seat design. Two points of contact on firesafe metal seat design
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β€ Body Type β Wafer, Lug, Double Flanged
β€ Body β CS, SS
β€ Disc β CF8M, CF8
β€ Stem β 316 SS, 17-4 PH, XM-19
β€ Seat β Ultra PTFE, RTFE, Metal (SS, Inconel) Firesafe
β€ Size Range β Series 44, 45 β 2" to 48β (DN 50 to 1200),Series 47, 48 β 2β to 24β (DN 50 to 600),Series 46 β 3" to 48β (DN 80 to 1200),Series 49 β 3" to 24β (DN 80 to 600)
β€ Pressure Rating β Series 44, 45, 46 - Class 150,Series 47, 48, 49 - Class 300
β€ Leakage Class β Soft seat β Class VI,Metal seat β Class IV
β€ Design Standard β API 609 Category B, BS EN 593
β€ Testing Standard β API 598, BS EN 12266-1