NAF Control Valves

NAF Duball DL

High performance, metal- or soft seated, full-bore ball valve equally suitable for isolation, on/off and modulating control applications.

Duball DL Ball Valve

Duball DL Ball Valve

  • The excellent characteristics of NAF Duball DL are particularly beneficial under the most challenging operating conditions in the process industry, where difficult media and demanding pressure conditions make severe demands on the design, materials, and performance. 

  • The unique spring-loaded stem seal packing guarantees a long maintenance-free and safe operation. 

  • NAF Duball DL has direct actuator mounting capabilities of the NAF Turnex actuator which provides a high-performance, vibration-resistant, compact valve package. 

  • The valve is available with a wide range of options with regards to materials, seat configuration, low noise and anti-cavitation trims, and other special versions. 

  • API 607 and ISO 10497 fire-safe compliant versions available. 

  • DN25-400, 1″- 16″, PN10-40, ANSI Class 150 & 300 

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NAF Control Valves
  • NAF Duball DL Ball Valves - Technical Bulletin PDF : 3.4 MB
  • NAF Duball DL Ball Valves - Safety Manual PDF : 1.6 MB
  • NAF Duball DL Ball Valves - IOM PDF : 2.1 MB