The Duball DL is a high-performance, metal-seated, full-bore ball valve, equally suitable for isolation, on-off and modulating control applications.
ASME B16.34
API 6D
PED 97/23/EC
Fire-safe: API 607, ISO 10497
Oxygen Service: ASTM G124, BAM, EIGA
FE (Fugitive emission): ISO 15848, TA LUFT VDI/VDE 2440
ISO 9001
Anti-static: DIN EN ISO 17292
Shell : SPP 77/300 - CG Spec (Slag sluice systems)
Brazil: NBR 15847
Cryogenic: BS 6364, SPE 77/306
Size Range:
DN25 to 400
NPS 1 to 16
Pressure Class Range:
PN 10-40
Class 150 to 300
Seating Material: Metal Soft
Long, maintenance-free, safe operation in automated on-off and control service assured by spring-loaded stem seal packing
Increased plant and personnel safety via blowout-proof stem and high-torque
transmission with minimum mechanical backlash
Broad application versatility enabled by extensive size range and options, including fire-safe tested versions
High performance enabled by direct actuator mounting capabilities of the Turnex actuator
Excellent control, noise reduction and cavitation enabled by unique Z-trim option
Easy installation and replacement as a result of the off-center joint face of the valve body
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