Stop Valve GAV 56F DN 15 to 150, PN 40 - Gestra AG
Stop Valve GAV 56F DN 15 to 150, PN 40 - Gestra AG
Stop Valve GAV 56F DN 15 to 150, PN 40 - Gestra AG
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Data Sheet 818881-02Issue Date: 03/13<strong>S<strong>to</strong>p</strong> <strong>Valve</strong><strong>GAV</strong> <strong>56F</strong><strong>DN</strong> <strong>15</strong> <strong>to</strong> <strong>15</strong>0, <strong>PN</strong> <strong>40</strong><strong>GAV</strong> <strong>56F</strong>DescriptionStraight-through bellows-sealed s<strong>to</strong>p valve with flanges <strong>to</strong> EN 1092-1. The valve is designed for shutting off and throttlingneutral gases, vapours and liquids in all sec<strong>to</strong>rs of industry.The s<strong>to</strong>p valve <strong>GAV</strong> <strong>56F</strong> is particularly suitable for steam, water condensate, oil and air. Throttling plug, standard for sizes <strong>DN</strong> <strong>15</strong> <strong>to</strong> <strong>DN</strong> 100 Double-walled bellows Safety stuffing box Locking device for handwheel Non-rising handwheel Non-rotation lock for stem and indicating device External stem thread Stem with rolled thread Lift s<strong>to</strong>pFunctionStraight-through bellows-sealed s<strong>to</strong>p valve with flanges <strong>to</strong> EN 1092-1, body made from cast steel grade 1.0619, plug withraised face made from chromium steel grade 1.<strong>40</strong>21, seat ring made from chromium steel 1.<strong>40</strong>21, from <strong>DN</strong> 65: steel grade1.4502, hard faced.Single-piece stem with external rolled threadThe s<strong>to</strong>p valve is equipped with a double-walled stainless steel bellows seal, designed for 10,000 load changes and a safetystuffing box made from pure graphite.Two bonnet gaskets of pure graphite with stainless steel insert, with the force acting directly upon the gaskets. <strong>S<strong>to</strong>p</strong> valvesfrom <strong>DN</strong> <strong>15</strong> <strong>to</strong> <strong>DN</strong> 100 are fitted with a throttling plug as standard.Temperature & Pressure Ratings <strong>DN</strong> <strong>15</strong> <strong>to</strong><strong>15</strong>0p (pressure) [bar] <strong>40</strong> 35.2 33.3 27.6 25.7 23.8T (temperature) [°C] 20 <strong>15</strong>0 200 300 350 <strong>40</strong>0up <strong>to</strong> <strong>DN</strong> 100 <strong>40</strong> 1 )ΔP (admissible differential pressure)[bar]<strong>DN</strong> 125 25 1 )<strong>DN</strong> <strong>15</strong>0 21 1 )1) Not applicable for throttling positionBased on EN 1092-1MaterialsComponent partDIN/ENHandwheel up <strong>to</strong> <strong>DN</strong> 80Steel plate (with epoxy coating)Handwheel <strong>DN</strong> 100 <strong>to</strong> <strong>DN</strong> <strong>15</strong>0Spheroidal graphite iron with coatingStem 1.<strong>40</strong>21Body, bonnet1.0619+NPacking ringsPure graphiteStud bolts 1.7225Hexagon nuts 1.7709GasketPure graphite with stainless steel insertBellows 1.4571Plug 1.<strong>40</strong>21Seat ring up <strong>to</strong> <strong>DN</strong> 50 1.<strong>40</strong>21Seat ring from <strong>DN</strong> 651.4502, hard faced
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