KSB 48014224 Boa-H NG Bellows-type globe valve DN 50 Z1

KSB 48014224 Boa-H NG Bellows-type globe valve DN 50KSB Boa-H
Globe Valves
Bellows-type Globe Valves
Main applications:
Hot-water heating systems;
Air-conditioning systems;
Boiler feed applications;
Boiler recirculation;
Chemical industry;
Process engineering;
Heat recovery systems;
Sugar industry.
Fluids handled:
High-temperature hot water;
Saturated steam;
Thermal oil;
Liquids and gases not chemically or mechanically aggressive to the valve materials;
Other fluids on request.
Design details
Design:
Straight-way or angle pattern with horizontal seat;
Throttling plug up to DN 100;
On/off disc for DN 125 and above;
All nominal sizes with position indicator, locking device and travel stop;
Compact bonnet;
Maintenance-free bellows-type stem seal with back-up gland packing;
Non-rising handwheel;
Flanges to DIN EN 1092-2 Type 21;
Exterior coating: blue RAL 5002;
The valves satisfy the safety requirements of Annex I of the European Pressure Equipment Directive 97/23/EC (PED) for fluids in Groups 1 and 2;
The valves do not have a potential internal source of ignition and can be used in potentially explosive atmospheres, Group II, category 2 (zones 1+21) and category 3 (zones 2+22) to ATEX 94/9/EC;
Type-tested to the specifications of Germanischer Lloyd.
Variants:
V-port plug (seat-guided throttling plug for maximum requirements) for DN 15-300;
Valve disc with PTFE ring (max. 200 °C, throttling plug for DN 15-100, on/off disc for DN 125-200);
Lead-sealable cap (prevents unauthorised actuation) as assembly set;
Balanced plug design from DN 200;
High-temperature resistant paint (grey aluminium);
Either one or two limit switch(es) as assembly kit for globe valves of DN 15-150 made of JS1025;
Oil and grease-free: lubricated exclusively by mineral oil free lubricants approved by the German Federal Office for Materials Testing (Bundesanstalt für Materialforschung und -prüfung, BAM);
Other flange designs;
Low-temperature steel bolts for temperatures down to -30 °C (JS 1025 only) up to 0.75 x PN (max.);
Certification to customer specification;
Globe valve version with gland packing and electric actuator see BOA-H Mat E.
Product benefits:
High operating comfort at no extra charge due to position indicator with travel stop and locking device outside the insulation. Valve disc position can be checked at any time;
Optimum start-up and throttling due to standard throttling plug up to DN 100 (seat-guided V-port plug
optionally available for all valve sizes to meet maximum throttling requirements);
When the valve is fully open, the bellows is confined within the valve body, protected from pressure surges;
Little heat loss during operation due to short and smooth bonnet suitable for easy and cheap insulation;
Added protection against fatigue fracture: The bellows is welded to the stem, so no vibrations are transmitted from the valve disc to the bellows;
Back-up gland packing provides additional safety in case of defective bellows;
Position indicator with colour coding system for identification of valve design during replacement work. The disc type and seat/disc interface material can be verified without removing the insulation;
Space-saving non-rising handwheel;
Reduced maintenance costs due to replaceable valve disc. Instead of replacing the complete upper section, only the valve disc is replaced, if necessary.
On all enquiries/orders please specify:
Type;
Nominal pressure;
Nominal size;
Material;
Variants;
Number of type series booklet.


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