Feed-water control valves with spill back MV 5291/ MV 5391

Product catalog summary

Overview: The document provides technical specifications and details for feed-water control valves with spill back, specifically for steam boiler systems. It covers various series and models, including MV 5291 and MV 5391, and outlines their features, technical data, and spare parts.

Specifications:

Designed for steam boiler feed-water control systems.
Protects boiler-feed pumps from falling below minimum flow rates.
Adjustable recirculation flow rate with perforated cone for feed-water control.
Suitable for boiler steam ratings of 5 to 50 t/h.
Nominal sizes range from DN 25 to DN 80 with a nominal pressure of PN 40.

Technical Data:

Series include MV 5291-P and MV 5391-P with various nominal diameters and pressures.
Body material is GP-240-GH with PTFE/graphite spindle packing.
Perforated cone types for feed-water and spill back, with adjustable flow rates for DN 40 and DN 50.
Kvs-values are provided in Table 1.
Seat leakage conforms to DIN EN 1349, part 4, class IV, with a maximum medium temperature of 200°C.

Functionality: An electric actuator adjusts a perforated cone to control the feed-water flow rate. A secondary cone opens for recirculation when the main cone is below minimum lift, ensuring constant mass flow through the pump.

Spare Parts: The document includes a detailed spare parts list with components such as body, seat ring, cone assembly, spindle packing, and various nuts and bolts.

Additional Information: Technical data for actuators is available in a separate technical data sheet. The document also includes dimension sheets and notes on technical alterations.

Catalog excerpts

Feed-water control valves with spill back MV 5291/ MV 5391-1

Speisewasserregelventil mit Freilauf Feed-water control valves with spill back Vanne de régulation d’alimentation d’eau 5704-7010 Baureihen Series Séries • MV 5291 • MV 5391 Regelventil für Speisewasserregelung von Dampfkesseln mit Control valve for steam boiler feed-water control systems Vanne de régulation pour l´alimentation en eau : • • • • • • • • 01/2013 sicherem Schutz der Kesselpumpe gegen Mindestmengenunterschreitung einstellbarer Freilaufmenge Lochkegel für Speisestromdrosselung für Kesselleistungen von 5...50 t/h Nennweite DN 25..50, DN 80 Nenndruck PN 40 • • • • • boiler-feed pump securely protected for falling below the minimum flow rate adjustable recirculation flow rate perforated cone for feed-water control for boiler steam ratings 5...50 t/h nominal size DN 25..DN 50, DN 80 nominal pressure PN 40 • • • • • Protection efficace de la pompe contre un débit inférieur au débit minimal de la pompe. Débit de recirculation ajustable Cage perforée pour contrôle de l’alimentation. Pour débit de chaudière de 5 à 50t/h. Diamètre nominal DN 25 à 50 ,DN 80 Pression nominale PN 40 page 1

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Feed-water control valves with spill back MV 5291/ MV 5391-2

Speisewasserregelventil mit Freilauf Feed- water control valves with spill back Soupape de régulation d’alimentation d’eau 5704-7020 Technische Daten Technical data Caractéristiques techniques Baureihen Series: Séries : MV 5291-P Pumpenfreilaufventil DN 25, DN 32 mit ST 5112 MV 5291-P feed-water valve DN 25, DN 32 with ST 5112 MV 5391-P Pumpenfreilaufventil DN 40, DN 50 mit ST 5113 MV 5391-P feed-water valve DN 40, DN 50 with ST 5113 MV 5391-P Pumpenfreilaufventil DN 80 mit ST 5114 MV 5391-P feed-water valve DN 80 with ST 5114 Nennweite: Nennweite Freilauf: DN 25..50, DN 80 see table 1 MV 5291-P...

Open the catalog to page 2