Automatic control and heat engineering - Polna S.A.

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PRODUCTS OF AUTOMATIC CONTROL ENGINEERING - TECHNICAL INFORMATION CONTENT Introduction ...................................................................................................................................... Page 1 Design versions ............................................................................................................................... 2 Material executions .......................................................................................................................... 3 Nominal pressure ............................................................................................................................. 3 Flow ratio ......................................................................................................................................... 4 Flow characteristics ......................................................................................................................... 4 Internal tightness ............................................................................................................................. 5 Bonnet, types and packings ............................................................................................................. 6 End connections, types .................................................................................................................... 7 Hardening of valve internal parts ..................................................................................................... 7 Drive selection ................................................................................................................................. 8 Harmful effects in valve operation .................................................................................................... 9 INTRODUCTION Fluid flow ratio regulation appliances, which keep the required regulation characteristics, are critical in industrial automatics systems. The main component of such appliances are controllers, which adjust the resistance for flowing fluid, and drives (actuators), which provide mechanic energy required in setting of controllers. The following are representatives of this group of appliances, manufactured by Zakłady Automatyki POLNA SA: • globe and angle control valves, • three-way control valves, • butterfly valves. Regarding the type of drive, controllers are manufactured in following executions: • with spring diaphragm pneumatic actuators, • with electric and electro-hydraulic actuators, • with pneumatic piston actuators, • with hand operated drive, • without drive. • Regarding the fact that valves are the largest group of controllers, the expression “valves” is hereinafter often interchangeable with expression “controllers”. While selecting valves for specific working conditions one should consider the following aspects: 1. valve design version, 2. material execution, 3. nominal pressure, 4. flow coefficient, 5. flow characteristics, 6. internal tightness, 7. bonnet type and packing, 8. body connection types, 9. hardening of valve internal parts, 10. selection of drive, 11. harmful effects in valve operation. 1
1. DESIGN VERSIONS The design version aspect applies only to valves. Valves can be subdivided using the following criteria: a) position of body inlet and outlet • globe, • three-way, • angle, b) closing component • with linear motion valve plug, • with rotary motion valve plug, c) shape of closing component • profile valve plug, • perforated valve plug, • multi-stage valve plug, • cage valve plug, d) balancing of axial forces • unbalanced, • balanced, e) reversibility of operation • reversible design double-ported valves, • irreversible design single-ported valves. Globe valves with linear situation of input and output are the basic, most common group of valves. Three-way valves are used in installations where mixing or separation of fluid is required. Angle valves are preferred option in applications where flashing (evaporation) and large pressure drops occur. A variation of angle valves are „ ” valves, with parallel but not axial body ends. Rotary plug globe valves are recommended in cases of large flows and demand for precise adjustment in the beginning of opening. Perforated (perforated) components are used mostly to reduce noise emissions. Multi-stage valve plugs reduce cavitation and choked flow. In cage valves there is a piston valve plug, working with perforated control cage. They are used for large pressure drops applications. Pressure balancing of valve aims at equalization of static pressure on both sides of valve plug, by means of balance holes or internal valve plug (pilot). For selection of the valve balancing method the following factors must be taken into account: a) plug - pilot - flow direction - above the plug (Flow To Close - FTC), - high leakage class - (V class), - enhanced rangeability, - limited possibility to manufacture two-stage plugs to apply throttling cages. b) balancing and relieving holes in the plug - flow direction under the plug (Flow To Open - FTO), - max. leakage class (IV class), - plug sealing subjects to wearing - it must be replaceable, - possibility to manufacture multi-stage plugs to and apply throttling cages. Reversibility of valve operation denotes possibility of changing its function (pressing the valve plug stem can cause opening or closing of valve) in the consequence of different assembly of valve internal parts. While selecting valve design one should consider the following aspects: • leakage class Single-ported valves are more tight than double-ported ones. • balancing of axial forces Double-ported valves require smaller resetting forces and allow transferring of larger pressure drops than in the case of single-ported valves with same actuators. • flow coefficient Single-ported valves feature better possibility of flow reduction, whereas double-ported valves and rotary plug valves feature better flow coefficients than single-ported ones, with same valve diameter. • nominal pressure Irreversible valves are used in applications with higher nominal pressure than in the case of reversible valves. • fluid viscosity It is recommended, that single-ported valves are used with dense fluids, with viscosity v>10 -5 [m 2 /s], where laminar flow may be observed. 2 Technical information - valves
Page 1: www.polna.com.pl PRODUCTCATALOGUE A
Page 5 and 6: Dear Ladies and Gentlemen, we are p
Page 7 and 8: Tourist values Welcome to Przemyśl
Page 9 and 10: ZAKLADY AUTOMATYKI POLNA SA 37-700
Page 11: 31. Self-actuating pressure relief
Page 15 and 16: It is advised that DIVENT valve cal
Page 17 and 18: V - 3 • 10 -4 • Dp•D [cm 3 /m
Page 19 and 20: 10. SELECTION OF DRIVE Valves and b
Page 21 and 22: NOTES: 10 Revision: INF/03/2011 Val
Page 23 and 24: Sources of valve noise emissions ma
Page 25 and 26: Fig. 9. Rotary valve for operation
Page 27 and 28: Over the last tens years, the impor
Page 29 and 30: Boiler feed valve, also fulfilling
Page 31 and 32: Ring desuperheater. Regulation scop
Page 33 and 34: Valve with a two-step plug and a th
Page 35 and 36: Anti-cavitation valve. The body is
Page 37 and 38: Valves for work in underground inst
Page 39 and 40: DESIGN AND TECHNICAL SPECIFICATION:
Page 41 and 42: Valve seat (4) - screwed in, with c
Page 43 and 44: a) with standard valve plug b) with
Page 45 and 46: Table 12. Flow ratios Kvs [m 3 /h]
Page 47 and 48: ALLOWABLE PRESSURE DROPS ∆p. Pres
Page 49 and 50: Note: 1. In Table 15, theoretical a
Page 51 and 52: Type R Type P Fig. 5. P/R multi-spr
Page 53 and 54: PARTITION AND MARKING - Z - 0 Type
Page 55 and 56: Body : single-ported, flanged, cast
Page 57 and 58: ORDERING: The order should contain:
Page 59 and 60: DESIGN AND TECHNICAL SPECIFIACTION:
Page 61 and 62: Standard bonnet, PTFE-V sealing Ext
Page 63 and 64:
Table 3…9. Allowable working over
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DESIGNS Design and material options
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Table 13: Pressure drops Δp [bar]
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Table 15a: Control valves connectio
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Table 19: Butt welding ends BW DN D
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Table 24: Sizes and weights of pneu
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CLASSIFICATION AND MARKING: - Z1A -
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Valve with two-step plug and thrott
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Valve with reverse flow (FTC) for f
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DESIGN AND TECHNICAL SPECIFIACTION:
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Standard bonnet, PTFE-V sealing Ext
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Table 3…9. Allowable working over
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DESIGN Single-ported globe control
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Table 13: Pressure drops Δp [bar]
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DIMENSIONS AND WEIGHTS Flanged conn
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Table 18: Control valve length, wel
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Table 21: SW socket welding ends. D
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Table 25: Manual drives type 20 - t
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NOTES: 88 Revision: Z1B/06/2013 Val
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Valve with two-step plug and thrott
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Valve with two-step plug pilot bala
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DESIGN AND TECHNICAL SPECIFIACTION:
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ALLOWABLE PRESSURE DROPS ∆p. Pres
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Table 11. Sizes of acutated valves
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THREE-WAY CONTROL VALVES TYPE Z3 ®
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Special designs: Control valve with
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Table 11: Kvs flow ratios and calcu
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Table 14. Control valves connection
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ROTARY PLUG CONTROL VALVES TYPE Z33
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Table 8. Listing of components with
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Table 11. Metallic seat (leakage cl
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No in fig. Part 21 Body 22 Lever 23
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OPERATION PRINCIPLE (transformation
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Table 16. Dimensions of valves with
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ROTARY PLUG CONTROL VALVES TYPE Z33
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where: ∆p [bar] M d [Nm] D [mm] C
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Fig. 1 Valve parts a) standard b) f
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Table 3. Flow coefficients K VS (m
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VALVE MARKING: - Z10 - 8 0 Type and
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Body: flanged, material: cast iron
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DIMENSIONS: Table 6. 132 0 -0,1 PRO
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TECHNICAL PARAMETERS Table 1. Flow
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Components of the butterfly valve:
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COMBINING BUTTERFLY VALVES WITH ELE
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Fig. 9 Pressure drop ∆p vs. openi
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Materials: - body, bonnet: 13CrMo 4
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Table 3. Dimensions of the mating s
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Flow coefficient: Kvs 10 Characteri
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NOTES: 148 Revision: ZM1 and Z1B-M/
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Table 1. Technical parameters. Size
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Disposition forces: Disposition act
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DIMENSIONS AND WEIGHTS Actuator siz
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PRINCIPLES OF SELECTING REGULATORS:
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●● Regulated pressure differenc
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TECHNICAL PARAMETERS: Flow coeffici
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INSTALLATION KIT: The regulator is
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TECHNICAL PARAMETERS: Flow coeffici
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INSTALLATION KIT: The regulator is
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TECHNICAL SPECIFICATIONS: K VS flow
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ACCESSORIES: Regulator is delivered
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Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
TECHNICAL SPECIFICATIONS: DN nomina
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Page 195 and 196:
VARIANTS: ZSG 9.1 ZSG 9.2 TECHNICAL
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DIMENSIONS AND WEIGHTS Valve weight
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INSTALLATION Regulator is to be ins
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DIMENSIONS AND WEIGHTS DN A C Diaph
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Page 207 and 208:
DIMENSIONS AND WEIGHTS 196 DN 15 A
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Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
DIMENSIONS AND WEIGHTS DN A L Valve
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Page 219 and 220:
Page 221 and 222:
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DIMENSIONS AND WEIGHTS DN A B C Dia
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OPERATING PRINCIPLE: Regulator valv
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INSTALLATION The strainers should b
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TECHNICAL PARAMETERS Maximum workin
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Inlet Outlet A B F NPT 1/4” NPT 1
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Inlet Outlet A F NPT 1/4” NPT 1/4
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PRODUCT CODE: Needle valve ZA - - -
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DIMENSIONS Table 1. Values of “A
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Acid Acid-proof resistant body grap
Page 245 and 246:
Ball ending Pipe Design and dimensi
Page 247:
Working pressures and nominal press
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Automatic control and heat engineering - Polna S.A.

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