NAF – Setball Ball Sector Control ValveEnquire Now
The NAF-Setball is a V port segmented ball rotary control valve that is highly versatile and designed for high performance modulating control. The excellent control characteristics are particularly beneﬁcial under severe control conditions where the media contains solid particles and fibres, a wide control range is required, high pressure drops are being managed and if cavitation occurs. The Zebra-CL™ live loading stem packing gives you a standard process control valve with a maximum temperature of 250oC that also complies with EN ISO 15848-1 for fugitive emissions.
The one-piece, leak proof stainless steel body minimises leak paths, while metal seats with rigid welded overlay of Alloy 6 provides higher leakage resistance over extended periods. It has dual low friction bearings and a specially designed seat, resulting in a smooth operation and making it possible to use a smaller actuator. The stem is splined so that the connection to the ball has zero backlash for optimum control performance while the direct actuator mounting capabilities of the NAF-Turnex double of single acting control actuator provides a high performance, vibration resistant, compact control valve package. The standard factory fitted NAF-D30 Intelligent Valve Positioner is easy and fast to calibrate with Advanced / Premium diagnostics to ensure you can monitor valve performance. An optional air block can be fitted to connect the positioner to the actuator so that external piping that can easily be damaged is a thing of the past.
Downtime is reduced due to the easy-to-service arrangement which allows for easy replacement of the seat and seat seal without the need for removing the segment and stem and actuator. The metal seat gives a sealing class to IEC 60534-4 Class IV with soft seat sealing class to IEC 60534-4 Class VI.
V-Port Ball Sector Control Valve
25mm to 700mm / 1” to 28”
PN10 – 40 / ANSI 150 – 300
|Temperatures||Up to 250°C|
|Wafer / Flanged|
|Alloy 6 / PTFE|
|Stainless steel EN1.4408 / CF8M + Hard Chrome Overlay|
|Options & |