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NAF Duball

Valves NAF

The NAF Duball DL is a full-bore ball valve suitable for isolation, on/off, and modulating control applications. Available in stainless steel or carbon steel as standard, it can also be supplied in other materials, such as Duplex and titanium.

This valve is part of the fourth generation of the Duball portfolio, one of the most proven ball valve ranges in the industry. The NAF Duball DL features a spring-loaded stem seal packing for long, maintenance-free, and safe operation, and a floating ball design for bidirectional tightness.

The valve is also service-friendly, thanks to its off-centre body split and modular design.

Specifications
Technical Data
Advantages
Industries
Documents
Contact

Specifications

Material: Stainless steel, carbon steel, Duplex, titanium, etc.
Size Range: DN 25–400 (1” to 16”)
Pressure Rating: PN 10-40 (ANSI Class 150, 300)
Options: Metal seats with rigid welded overlay of Alloy 6, or metal encapsulated, reinforced PTFE seats. Fire safe tested versions according to API 607/ISO 10497. CE-marked according to Pressure Equipment Directive (PED 97/23/EG) module H, category III.

Technical Data

Size Range: DN 25-400 (1-16″)
Pressure Rating: PN 10-40 (ANSI Class 150, 300)

Advantages

Spring-loaded stem seal packing for long, maintenance-free operation.
Direct actuator mounting with NAF Turnex actuator for high performance and vibration resistance.
Sturdy, blowout-proof stem with high torque transmission and minimal mechanical backlash.
Floating ball design for bidirectional tightness.
Z-trim option for minimized cavitation and noise, with excellent control characteristics.
Easy serviceability due to off-centre joint face of the valve body.
Multiple optional versions for specific applications.

Industries

Bleach Chemicals
Chemical and Liquor
Coatings
Digester
Paper Stock

Documents

Contact Us

Contact our Valve Specialist Team

Brendan Merrigan (External) – mob: 087 2598124
Vicki McGrath – tel: 021 461 7207
Brian Barry – tel: 021 461 7211
Tim Quigley – tel: 021 461 7209
Ross O’Donovan – tel: 021 461 7230
Shauna O’Connor – tel: 021 461 7237
Tel: 021 461 7200

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