Ksb – ECOLINE GLB 150-600

– Leak-free stem seal

– Primary sealing to atmosphere is provided by a multi-walled metal bellows welded to the stem and a graphite gasket between bonnet and yoke.
– Secondary sealing of the stem passage to atmosphere is provided by a minimum of five graphite packing rings plus lower gland section for added safety.

– Longer service lives of valve and bellows

– Specially designed multi-ply stainless steel bellows offers excellent corrosion resistance and flexibility; designed to withstand 1.5 times the nominal valve pressure.
– Thanks to its position well outside the flow path, the bellows is not exposed to abrupt changes in fluid pressure which could result in lateral deformation and subsequent failure.
– A stop attached to the stem by means of a pin ensures straight, non-rotating movement of the stem and bellows and prevents circumferential deformation at the bellows.
– On some of the larger sizes, an additional valve disc guide accurately seats the valve disc on the body seat and prevents deformation of the long stem/bellows assembly.
– Stellite-6 hard-facing applied to the seating surfaces of the body and the valve disc prevents the valve disc from seizing in the body seat and reduces wear.

– Reliable leakage protection of body

– Yoke gaskets are fitted above and below the end plate of the bellows assembly and firmly compressed by a set of studs and nuts. The lower gasket is confined by the body shoulder and the end fitting of the bellows to prevent excessive compression.
– Identical design of bonnet gasket and yoke gasket prevents excessive compression.

– Ease of service without additional costs

– No costs for daily or frequent maintenance work during valve duty thanks to reliable bellows seal between the stem and the body.
– If required, a leakage monitoring hole can be provided in the gland packing area.
– The bolted bonnet and the design of the stem and bellows assembly enable straightforward dismantling in the event that defective internal components need to be replaced.
– The valve disc dismantles from the stem to allow straightforward repair in the event of damage to the valve disc and body seating surfaces.

– Operating reliability

– When the valve is in the fully open position, the stop acts as a travel stop preventing excessive valve travel which could destroy the bellows or reduce the expected service life of the bellows.
– The stop also provides anti-blow out protection, preventing the stem from being blown out of the valve body under high internal valve pressure.

– Suitable for various installation positions

– Design with valve disc accurately guided onto the seat by means of a guiding plate enables special installation positions (in vertical pipes or with inclined but upward stem position).

– Available for all kinds of fluids

– Several material variants available for body and bellows to suit a variety of fluids and applications.

Globe valve

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Declaration of conformity (0570.8544_EN)