Pilot operated main valves for regulating pressure and temperature, type PM

Transcription

1 MAKING MODERN LIVING POSSIBLE Technical brochure Pilot operated main valves for regulating pressure and temperature, type PM PM valves are pilot operated main valves for regulating pressure and temperature in refri geration systems. PM main valves can be used on the high and lowpressure sides, in wet and dry suction lines, and in liquid lines without phase change (i.e. where no expansion takes place in the valve). The function of a PM valve depends solely on the pilot pressure applied to the valve, either from pilot valves or in the form of external pilot pressure. PM 1 has one connection for pilot pressure/pilot valve, while PM 3 has three pilot pressure/pilot valve connections. The associated Danfoss pilot valves can either be screwed direct into the main valve or be connected via an external pilot line. Several pilot valves can be used on one main valve to give a large number of different functions. The PM valve top cover has a pressure gauge connection so that the inlet pressure can be measured when, for example, main valve function must be set or adjusted in relation to the system regulation performed by the pilot valves. The spindle in the top cover of the main PM valve can be used to manually open and close the valve (although PM cannot be opened fully in this way). Features Can be used for all normal, non-flaable refrigerants, including R 717, and noncorrosive gases/liquids - assuming seals of the correct material are used. Large range of flanges with connection dimensions in accordance with standards: DIN, ANSI, SOC, SA and FPT. Performs as a multifunction valve when several pilot valves are connected to the same main valve. The valve has a pressure gauge connection so that inlet pressure can be measured. The valve has a built-in filter and a teflon seat to give excellent tightness. The PM main valve top cover can be oriented in any direction without the function of pilot valves being affected. All pilot valves can be used on all sizes of PM main valves. They can be screwed direct into the main valve so that there is no need for weld or solder connections, or separate pilot lines. Danfoss A/S (AC.MCI/MWA), DKRCI.PD.GH0.A3.02 / 520H0764 1

2 Contents Page Features...1 Design...3 Technical data...4 Design, function...5 Function examples...7 Material specification Flange connections Ordering PM valves Dimensions and weights Accessories Liquid line Pumped liquid line Wet suction line Dry suction line Discharge line DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

3 Design Connections There is a very wide range of connection possibilities with PM main valves: Welding, DIN (2448) Welding, ANSI (B 36.10) Welding socket, ANSI (B 16.11) Solder connection, DIN (2856) Solder connection, ANSI (B 16.22) FPT internal thread, NPT (ANSI/ASME B ) PM main valves are designed as pilot operated valves that can be fully opened with a very small differential pressure (0.2 bar/ 2.9 psi). The valve design means that it will only fully close in the direction of flow. Pressure Equipment Directive (PED) The PM-valves are approved in accordance with the European standard specified in the Pressure Equipment Directive and are CE marked. For further details / restrictions - see Installation Instruction PM 1 will accept one pilot valve mounted direct on the valve, while PM 3 will accept three pilot valves. Two of the PM 3 pilot valve connections (S1 and S2) are series connected while the third pilot connection (P) is connected in parallel. Thus, with different combinations of pilot valves it is possible to obtain a very large number of different functions from one PM main valve. The PM main valve has a logarithmic or v-shaped throttle cone that ensures optimum regulating accuracy. The PM main valve top cover can be oriented in any direction without the function of pilot valves being affected. Valve body EN-GJS LT Seals Do not contain asbestos. PM valves Nominal bore DN 25 (1 ) DN (1 1 / 4-5 ) DN 150 (6 ) Classified for Fluid group I Category Article 3, paragraph 3 II III Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H0179 3

4 Technical data Refrigerants Can be used for all normal, non-flaable refrigerants, including R 717, and noncorrosive gases/liquids - assuming seals of the correct material are used. Use with flaable hydrocarbons cannot be recoended; please contact Danfoss. Temperature range 60/+120 C ( 76/+248 F). Surface PM 5-65: The external surface is zinc-chromated to give good protection against corrosion. PM : The surface of the PM is treated with a multi-layer painting. Pressure range The valve is designed for: Max. working pressure: 28 bar g (406 psig) Test pressure: 42 bar g (609 psig) Opening differential pressure: Fully open: M 0.2 bar g (m 2.9 psig) Max. (MOPD), solenoid valves only (10 W a.c. and 20 W d.c.): 21 bar g (305 psig) Built-in filter PM 5-40 mesh: 950 µ (18 mesh/) PM mesh: 1500 µ (10 mesh/) 4 DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

5 Design, function PM 1 and PM 3 1. Valve body 1 a Channels in valve body 1 1 b Channels in valve body Valve spindle 11. Teflon valve plate 12. Throttle cone 21a. Equalisation hole in servo piston Locking ring 24. Servo piston 24a. Gasket 30. Bottom cover 33. Strainer 36. Plug 40. Cover 40 a Channels in cover b Channels in cover c Channels in cover d Channels in cover Pressure gauge connection 60. Manual operating spindle 61. External pilot connection S I, S II Pilot valve connections in series connection holes P. Pilot valve connection in parallel connection hole PM1 The PM main valve is a pilot operated valve whose function is determined by the pilot valve used. The main valve with pilot valve(s) controls refrigerant flow by modulation or on/off in accordance with the pilot valve or main valve status. The degree of opening of the main valve is deter mined by the pressure difference (differential pressure) between pressure p 2, which acts on top of the servo piston (24), and pressure p 3, which acts on the underside of the servo piston. If this pressure difference is 0, the main valve will be fully closed. If the pressure difference is 0.2 bar (2.9 psi) or more, the main valve will be fully open. At pressure differences (p 2 - p 3 ) between 0.07 bar (1 psi) and 0.2 bar (2.9 psi), the degree of opening will be correspondingly proportional. The shape of the throttle cone (12) is loga rith mic, which gives an ideal regulation cha racteristic to pilot operated main valves. Because of valve body channel (1b), pressure p 3 acting on the underside of the servo piston (24) is equal to the main valve discharge pressure p 4. The degree of opening of the main valve is thus controlled by the application of a pressure, p 2, on top of the servo piston which is equal to or greater than the discharge pressure, p 4. p 2 = p 4 closed p 2 = p bar (2.9 psi)~ fully open p 4 p 2 p bar (2.9 psi) ~ proportional degree of opening. The maximum pressure, p 2, that can be built up on the top of the servo piston (24) normally corresponds to the pressure, p 1, acting on the main valve inlet side. PM3 Inlet pressure p 1 is led, via the drilled channels (1a, 40a, 40b, 40c, 40d) in the valve body (1) and cover (40) through the individual pilot valves and onto the top of the servo piston (24). The degree of opening of the individual pilot valves determines the size of pressure p 2 and thus the degree of opening of the main valve, i.e. the equalisation hole (21a) in the servo piston (24) ensures that pressure p 2 is balanced in accordance with the degree of opening of the pilot valve. Note: When main valve type PM 3 is used with an external pilot connection (61), the internal pilot pressure will be shut off. The PM 1 main valve can be fitted with just one screwed-on pilot valve. The degree of opening of the main valve will be in accordance with the control status from the pilot valve. PM 1 is fully closed when the pilot valve is fully closed and fully open when the pilot valve is fully open. Otherwise the degree of opening of the main valve is proportional to the degree of opening of the pilot valve. The PM 3 main valve can be fitted with either one, two, or three pilot valves so that up to three regulating functions are possible. Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H0179 5

6 Design, function (continued) The relations between the functions of the screwed-in pilot valves are as follows: A. The pilot valves fitted in ports SI and SII are connected in series. The PM 3 main valve will be fully closed if just one of the series-connected pilot valves is closed. The main valve can only open if both pilot valves are fully open at the same time. B. The pilot valve fitted in port P is connected in parallel to the pilot valves in ports SI and SII. The PM3 main valve will be fully open if the pilot valve in P is fully open, irrespective of the degree of opening of pilot valves SI and SII. The PM 3 main valve will be fully closed if the pilot valve in P is fully closed and at least one of the valves in SI or SII is fully closed at the same time. The relation between the pilot valves in ports SI, SII and P is shown in the table above. Pilot valve PM 3 SI SII P main valve Open Open Closed Open Open Open Open Open Open Closed Closed Closed Open Closed Open Open Closed Open Closed Closed Closed Open Open Open Closed Closed Closed Closed Closed Closed Open Open If the PM 3 is not fitted with three pilot valves, the unused port(s) must be sealed off with a blanking plug. If the blanking plug is fitted as an assembled unit, A + B, the channels from the port concerned will be closed. If only the top part, A, of the plug is fitted, the channels from the ports in question will be open. If the degree of opening of the PM main valve is not to be a function of the main valve inlet pressure, or if more than three regulating functions are required, ports SI, SII or P can be fitted with a nipple for the connection of external pilot pressure. This applies to both PM 1 and PM 3. Pressure p 2 on top of the servo piston will then be determined by the pressure to which the external pilot line is connected. The main valve function will be determined by the pilot valves fitted in that external pilot line. Pilot valves installed in external lines must be mounted in a type CVH housing. Depending on the function of the pilot valves, the PM regulating characteristic becomes: on/off proportional integral or cascade. PM main valves are therefore especially suitable for all forms of temperature and pressure regulating systems. Blanking plug A + B Blanking plug A 6 DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

7 Function examples Example no. 1-1 Constant pressure regulation to 7 bar g (19.5 Hg to 102 psig). 1 PM 1 1 CVP (LP) Example no. 1-2 Differential pressure regulation. 0 to 7 bar g (0 to 102 psig). 1 PM 1 1 CVPP (LP) Example no. 1-3 Temperature regulation. 40 to 60 C ( 40 to 140 F). Opening at rising temperature. Pressure independent. 1 PM 1 1 CVT Example no. 1-4 Temperature regulation. 40 to 60 C ( 40 to 140 F). Closing at rising temperature. Pressure independent. 1 PM 1 1 CVTO Example no. 1-5 On/off regulation (solenoid valve). 1 PM 1 1 EVM Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H0179 7

8 Function examples (continued) Example no. 1-6 Regulation with external control pressure. 1 PM 1 1 nipple for external control pressure Example no. 1-7 Constant pressure regulation to 28 bar g (19.5 Hg to 406 psig). 1 PM 1 1 CVP (HP) Example no. 1-8 Differential pressure regulation. 0 to 22 bar g (0 to 319 psig). 1 PM 1 1 CVPP (HP) Example no. 1-9 On/off regulation (solenoid valve). 1 PM 1 1 EVM-NO (12 W coil) Example no Crankcase pressure regulation. (Max. suction pressure regulation) 0.45 to 7 bar g (13.3 Hg to 102 psig). 1 PM 1 1 CVC 8 DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

9 Function examples (continued) Example no Electronically controlled media temperature regulation. 1 to 8 bar g (0 Hg to 116 psig). 1 PM 1 1 CVQ Example no. 3-1 Constant pressure regulation combined with electrical shut off to 7 bar g (19.5 Hg to 102 psig). 1 blanking plug 1 CVP (LP) 1 EVM Example no. 3-2 Constant pressure regulation combined with electrical wide open to 7 bar g (19.5 Hg to 102 psig). 1 blanking plug 1 CVP (LP) 1 EVM Example no. 3-3 Constant pressure regulation combined with electrical shut off and wide open to 7 bar g (19.5 Hg to 102 psig). 1 CVP (LP) 2 EVM Example no. 3-4 Constant pressure regulation with change-over between two preset evaporating pressures to 7 bar g (19.5 Hg to 102 psig). 2 CVP (LP) 1 EVM Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H0179 9

10 Function examples (continued) Example no. 3-5 External control pressure with electrical shut off combined with constant pressure regulation to 7 bar g (19.5 Hg to 102 psig). 1 nipple for external control pressure 1 CVP (LP) 1 EVM Example no. 3-6 Constant pressure regulation with external control pressure combined with electrical wide open to 7 bar g (19.5 Hg to 102 psig). 1 nipple for external control pressure 1 CVP (LP) 1 EVM Example no. 3-7 Constant pressure regulation with electrical shut off combined with external control pressure to 7 bar g (19.5 Hg to 102 psig). 1 nipple for external control pressure 1 CVP (LP) 1 EVM Example no. 3-8 Solenoid valve with external control pressure for small pressure drops. 1 blanking plug 1 nipple for external control pressure 1 EVM Example no. 3-9 Differential pressure regulation combined with electrical shut off. 0 to 7 bar g (0 to 102 psig). 1 blanking plug 1 CVPP (LP) 1 EVM 10 DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

11 Function examples (continued) Example no Differential pressure regulation combined with electrical wide open. 0 to 7 bar g (0 to 102 psig). 1 blanking plug 1 CVPP (LP) 1 EVM Example no Differential pressure regulation combined with electrical wide open and shut off. 0 to 7 bar g (0 to 102 psig). 1 CVPP (LP) 2 EVM Example no Thermostatic regulation combined with electrical shut off. Pressure independent. 40 to 60 C ( 40 to 140 F). 1 blanking plug 1 CVT 1 EVM Example no Thermostatic regulation combined with electrical wide open. Pressure independent. 40 to 60 C ( 40 to 140 F). 1 blanking plug 1 CVT 1 EVM Example no Thermostatic regulation with protection against too low evaporating pressure. 40 to 60 C ( 40 to 140 F) to 7 bar g (19.5 Hg to 102 psig). 1 blanking plug 1 CVT 1 CVP Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

12 Function examples (continued) Example no Constant pressure regulation combined with electrical shut off to 28 bar g (19.5 Hg to 406 psig). 1 blanking plug 1 CVP (HP) 1 EVM Example no Constant pressure regulation combined with electrical wide open to 28 bar g (19.5 Hg to 406 psig). 1 blanking plug 1 CVP (HP) 1 EVM Example no Constant pressure regulation combined with electrical shut off and wide open to 28 bar g (19.5 Hg to 406 psig). 1 CVP (HP) 2 EVM Example no Constant pressure regulation with change-over between two preset evaporating pressures to 28 bar g (19.5 Hg to 406 psig). 2 CVP (HP) 1 EVM Example no Differential pressure regulation combined with electrical shut off. 0 to 22 bar g (0 to 319 psig). 1 blanking plug 1 CVPP (HP) 1 EVM 12 DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

13 Function examples (continued) Example no Differential pressure regulation combined with electrical wide open. 0 to 22 bar g (0 to 319 psig). 1 blanking plug 1 CVPP (HP) 1 EVM Example no Differential pressure regulation combined with electrical wide open and shut off. 0 to 22 bar g (0 to 319 psig). 1 CVPP (HP) 2 EVM Example no Constant pressure regulation combined with electrical wide open and shut off to 28 bar g (19.5 Hg to 406 psig). 1 CVP (HP) 1 EVM 1 EVM-NO (12 W coil) Example no Crankcase pressure regulation (max. suction pressure regulation) combined with shut off to 7 bar g (13.3 Hg to 102 psig). 1 blanking plug 1 CVC 1 EVM Example no Crankcase pressure regulation (max. suction pressure regulation) combined with evaporating pressure regulation to 28 bar g (19.5 Hg to 406 psig). 1 blanking plug 1 CVC 1 CVP(LP) Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

14 Function examples (continued) Example no Crankcase pressure regulation (max. suction pressure regulation) at low pressure drops across the main valve to 7 bar g (13.3 Hg to 102 psig). 1 blanking plug 1 nipple for external control pressure 1 CVC Example no Crankcase pressure regulation (max. suction pressure regulation) combined with constant pressure regulation and electrical shut off to 7 bar g (19.5 Hg to 102 psig). 1 blanking plug 1 nipple for external control pressure 1 CVP (LP) 1 EVM 2 CVH 1 CVC Example no Hot gas bypass regulation combined with electrical shut off to 7 bar g (13.3 Hg to 102 psig). 1 blanking plug 1 CVC 1 EVM Example no Constant pressure regulation with electrical shut off and protection against high pressure when suction line is closed to 28 bar g (19.5 Hg to 406 psig). 1 CVP (LP) 1 EVM 1 CVP (HP) Example no Electronically controlled media temperature regulation combined with electrical shut off. 1 to 8 bar g (0 Hg to 116 psig). 1 blanking plug 1 CVQ 1 EVM 14 DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

15 Function examples (continued) Example no Electronically controlled media temperature regulation combined with electrical shut off and wide open. 1 to 8 bar g (0 Hg to 116 psig). 1 CVQ 2 EVM Example no Electronically controlled media temperature regulation combined with electrical shut off and change over to constant pressure regulation. 1 to 8 bar g (0 Hg to 116 psig). 1 CVQ 1 CVP (LP) 1 EVM Example no Electronically controlled media temperature regulation with low evaporating pressure protection combined with wide open. 1 to 8 bar g (0 Hg to 116 psig). 1 CVQ 1 CVP (LP) 1 EVM Example no Electronically controlled media temperature regulation with low evaporating pressure protection combined with changeover to constant pressure regulation. 1 to 8 bar g (0 Hg to 116 psig). 1 CVQ 2 CVP (LP) Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

16 Material specification Material specification for PM valves No. Part Material DIN ISO ASTM 1 Valve body Low temperature, cast iron (spherical) 2 Gasket between body and flange Non-metal Non-asbestos EN-GJS LT EN Bolts for flange Stainless steel A2-70 A2-70 TYPE Flange PM 5-65 Steel RSt. 37-2, Fe360 B, 630 Grade C, A Flange PM Steel TSTE 355, 2635 / Valve spindle Steel 9SMn Trottle cone Steel 9SMn R683/9 2 R683/ SAE J SAE J Valve seat Teflon [PTFE] 23 Spring Steel 24 Servo piston Cast iron GG-25 Grade 250 Class 40B 30 Bottom cover Low temperature, cast iron (spherical) 32 Gasket between body and bottom cover Non-metal Non-asbestos EN-GJS LT EN Strainer Stainless steel 34 Bolts for bottom cover Stainless steel A2-70 A2-70 TYPE Plug Steel 9SMn Cover Low temperature, cast iron (spherical) EN-GJS LT EN R683/ SAE J Gasket Non-metal Non-asbestos 42 Bolts for top cover Stainless steel A2-70 A2-70 TYPE Manual operating spindle 61 Cap for manual operating spindle Steel Steel 9SMn SMn Spindle seal Steel 9SMn R683/9 2 R683/9 2 R683/ SAE J SAE J SAE J DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

17 Flange connections Danfoss flange sets are specially made for the Danfoss product range and must only be used for the purpose described. When ordering PM valves, first select the valve according to the capacity required. Then select the suitable flanges. Gaskets, bolts and nuts are supplied with the PM valve. For use with valve type Size Size OD T OD T Flange type Code no. DIN Butt welding DIN (2448) PM 5, 10, 15, 20, 25 PM 32 PM 40 PM 50 PM / / / / / / / N N N N N N N N N N N2680 PM A 027F2123 PM B 027F2124 PM C 027F2125 For use with valve type Size Size OD T OD T Flange type Schedule Code no. ANSI Butt welding ANSI B PM 5, 10, 15, 20, 25 PM 32 PM 40 PM 50 PM / / / / / / / N N N N N N N N N N N3041 PM A N3042 PM B N3043 PM C N3044 For use with valve type Size Size ID T ID T L L Flange type Code no. SOC Socket welding ANSI (B 16.11) PM 5, 10, 15, 20, / N N2002 PM / N2003 PM / N2004 PM N2005 PM / N2006 Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

18 Flange connections For use with valve type Size Size ID ID L L Flange type Code no. SA Soldering DIN (2856) PM 5, 10, 15, 20, L L1228 PM L2335 PM L2442 PM L2554 PM L2676 Soldering (ANSI B 16.22) PM 5, 10, 15, 20, 25 7 / / L L1229 PM / L2335 PM / L2441 PM / L2554 PM / L2666 FPT For use with valve type Size Size Inside pipe thread Flange type Code no. FPT inside pipe thread, NPT (ANSI/ASME B ) PM 5, 10, 15, 20, / 4 1 ( 3 / 4 14 NPT) ( NPT) 3 027G G DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

19 Ordering PM valves Main valve type PM 1 (for single pilot valve only) Code number includes: PM 1 valve with flange gaskets and bolts (but without flanges) Valve type PM 1-5 PM 1-10 PM 1-15 PM 1-20 PM 1-25 PM 1-32 PM 1-40 PM 1-50 PM 1-65 Code no. EN-GJS LT* 027F F F F F F F F F3009 Main valve type PM 3 (for up to three pilot valves) Code number includes: PM 3 valve with flange gaskets and bolts (but without flanges) Valve type PM 3-5 PM 3-10 PM 3-15 PM 3-20 PM 3-25 PM 3-32 PM 3-40 PM 3-50 PM 3-65 PM 3-80 PM PM * CE marked Code no. EN-GJS LT* 027F F F F F F F F F F F F1281 Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

20 Dimensions and weights PM 1 PM 3 Valve size H 1 H 2 H 3 H 4 L L 1 L 2 L 3 L 4 B 1 B 2 B 3 Weight 1 ) Weight 1 ) PM 1 and PM 3 valve body with flanges PM 1 PM 3 PM 5-25 (DN ) Oval flange kg lb 7 kg lb PM 32 (DN 32-40) kg lb 11.3 kg lb PM 40 (DN 40-50) kg lb 14 kg lb PM 50 (50-65) kg lb 19.8 kg lb PM 65 (65-80) kg lb 28.3 kg lb PM 80 (DN 100) kg lb PM 100 (DN 125) kg lb PM 125 (DN 150) kg lb 1 ) PM valve with flanges but without pilot valves 20 DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

21 Accessories Pressure gauge connection (weld / solder). Description 6.5 / 10 ( 0.26 / 0.39 ) weld / solder Code no. 027B2035 Accessories L L 1 B 1 B 2 B 3 B 4 B 5 Pressure gauge connection (weld / solder) AF 19 AF 22 G 1 / 4 A G 3 / 8 A 6.5 / 10 Pressure gauge connection, 1 / 4 flare (self-closing) Must not be used in aonia plant. Description Code no. 1 / 4 flare 027B2041 Accessories B B 1 B 2 Pressure gauge connection, 1 / 4 flare (self-closing) 1 / 4 flare G 1 / 4 A AF 19 1 / 4 flare Pressure gauge connection (cutting ring). Description Cutting ring connection, 6 Cutting ring connection, 10 Code no. 027B B2064 Accessories L L 1 B B 1 B 2 Pressure gauge connection (cutting ring) G 1 / 4 A AF 19 AF G 1 / 4 A AF 19 AF 14 Stainless steel: flanges, bolts for flanges and bolts for top and bottom covers, see flange connections for ordering. Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

22 Accessories (continued) Pressure gauge connection ( 1 / 4 FPT). Description Code no. 1 / 4 FPT 027B2062 Accessories L L 1 B B 1 B 2 Pressure gauge connection G 1 / 4 A AF 22 1 / 4 FPT External pilot connection. PM Description Code no External pilot connection (incl. damping orifice, D: 1.0 ) External pilot connection (incl. damping orifice, D: 1.8 ) Accessory bag with seal and O-ring for pilot valve 027F F F0666 Accessories H H 1 OD B B 1 B 2 External pilot connection AF 32 AF 32 M Blanking plug for pilot valves. Description Code no. Blanking plug 027F1046 Stainless steel: flanges, bolts for flanges and bolts for top and bottom covers, see flange connections for ordering. 22 DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

23 Accessories (continued) Mounting set for: - PMC + CVC (hot gas bypass) - PM + CVC (max. suction pressure regulation). The mounting set contains all necessary parts for mounting a CVC pilot valve on a PM main valve. Main valve Pilot valve Code no. PMC 5-25 PM 5-25 CVC 027F3190 PM 32 CVC 027F3191 PM 40 CVC 027F3192 PM 50 CVC 027F3193 PM 65 CVC 027F3194 Mounting set PM + CVPP (HP). The mounting set contains all necessary parts for mounting a CVPP (HP) pilot valve on a PM main valve. Main valve Pilot valve Code no. PM 5-25 CVPP (HP) 027F3195 PM 32 CVPP (HP) 027F3196 PM 40 CVPP (HP) 027F3197 PM 50 CVPP (HP) 027F3198 PM 65 CVPP (HP) 027F3199 Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

24 Liquid line Location of valve in system (marked with grey) Hot gas bypass & defrost line Pump Wet suction line Dry suction line Discharge line Liquid line without phase change Liquid line with or without phase change Location of valve in system (marked with grey) Hot gas bypass & defrost line Gravity Wet suction line Dry suction line Discharge line Liquid line without phase change Liquid line with or without phase change Location of valve in system (marked with grey) Hot gas bypass & defrost line DX Dry suction line Discharge line Liquid line without phase change 24 DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

25 SI units Calculation example (R 134a capacities): Running conditions in a plant are as follows: T e = 20 C Q 0 = 300 kw T liq = 10 C Max. P = 0.3 bar The capacity table is based on nominal conditions ( P = 0.2 bar, T liq = 30 C). The actual capacity must therefore be corrected to a nominal condition by multiplication with correction factors. Liquid line for P 0.3 bar f P = for liquid temperature f Tliq = Q n = Q o f P f Tliq = = 202 kw. From the capacity table a PM 25 with Q n = 224 kw is the correct selection for the application. US units Calculation example (R 134a capacities): Running conditions in a plant are as follows: T e = 20 F Q o = 130 TR T liq = 50 F Max. P = 5 psi The capacity table is based on nominal conditions ( P = 3 psi, T liq = 90 F) The actual capacity must therefore be corrected to a nominal condition by multiplication with correction factors. for P 5 psi, f P = 0.79 for liquid temperature f Tliq = Q n = Q o f P f Tliq = = 83.2 TR From the capacity table a PM 32 with Q n = 91 TR is the correct selection for the application. Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

26 SI units conditions, Q N [kw], T liq = 30 C, P = 0.2 bar R 717 k v m 3 /h Liquid line 50 C 40 C 30 C 20 C 10 C 0 C 10 C 20 C PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (bar) for liquid temperature (T liq ) Liquid temperature 20 C C C C C C C C 1.09 US units conditions, Q N [Tons of Refrigeration], T liq = 90 F, P = 3 psi R 717 C v USgal/min * 2 F below m operating temperature. 60 F* 40 F 20 F 0 F 20 F 40 F 60 F 80 F PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (psi) for liquid temperature (T liq ) Liquid temperature 10 F F F F F F F F DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

27 SI units conditions, Q N [kw], T liq = 30 C, P = 0.2 bar R 22 k v m 3 /h Liquid line 50 C 40 C 30 C 20 C 10 C 0 C 10 C 20 C PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (bar) for liquid temperature (T liq ) Liquid temperature 20 C C C C C C C C 1.22 US units conditions, Q N [Tons of Refrigeration], T liq = 90 F, P = 3 psi R 22 C v USgal/min * 2 F below m operating temperature. 60 F* 40 F 20 F 0 F 20 F 40 F 60 F 80 F PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (psi) for liquid temperature (T liq ) Liquid temperature 10 F F F F F F F F 1.20 Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

28 SI units conditions, Q N [kw], T liq = 30 C, P = 0.2 bar R 134a k v m 3 /h Liquid line 50 C 40 C 30 C 20 C 10 C 0 C 10 C 20 C PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (bar) for liquid temperature (T liq ) Liquid temperature 20 C C C C C C C C 1.29 US units conditions, Q N [Tons of Refrigeration], T liq = 90 F, P = 3 psi R 134a C v USgal/min * 2 F below m operating temperature. 60 F* 40 F 20 F - F 20 F 40 F 60 F 80 F PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (psi) for liquid temperature (T liq ) Liquid temperature 10 F F F F F F F F DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

29 SI units conditions, Q N [kw], T liq = 30 C, P = 0.2 bar R 404A k v m 3 /h Liquid line 50 C 40 C 30 C 20 C 10 C 0 C 10 C 20 C PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (bar) for liquid temperature (T liq ) Liquid temperature 20 C C C C C C C C 1.68 US units conditions, Q N [Tons of Refrigeration], T liq = 90 F, P = 3 psi R 404A C v USgal/min * 2 F below m operating temperature. 60 F* 40 F 20 F 0 F 20 F 40 F 60 F 80 F PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (psi) for liquid temperature (T liq ) Liquid temperature 10 F F F F F F F F 1.92 Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

30 Pumped liquid line Location of valve in system (marked with grey) Hot gas bypass & defrost line Pump Wet suction line Dry suction line Discharge line Liquid line without phase change Liquid line with or without phase change SI units Calculation example (R 717 capacities): Running conditions in a plant are as follows: T e = 20 C Q 0 = 180 kw circulation rate = 3 Max. P = 0.3 bar The capacity table is based on nominal conditions (pressure drop P = 0.3 bar, circulation rate = 4). The actual capacity must therefore be corrected to a nominal condition by multiplication with correction factors. for P 0.3 bar f P = 0.82 for circulation rate f rec = Q n = Q 0 f p f rec = = 111 kw From the capacity table a PM 15 with Q n = 133 kw is the correct selection for the application. US units Calculation example (R 717 capacities): Running conditions in a plant are as follows: T e = 20 F Q 0 = 130 TR Circulation rate = 3 Max. P = 5 psi The capacity table is based on nominal conditions (pressure drop p = 3 psi, circulation rate = 4). The actual capacity must therefore be corrected to a nominal condition by multiplication with correction factors. for P 5 psi f p = 0.79 for circulation rate f rec = Q n = Q 0 x f P x f circ = = 83 TR From the capacity table a PM 25 with Q n = 114 TR is the correct selection for the application. 30 DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

31 SI units conditions, Q N [kw], circulation rate = 4, P = 0.2 bar R 717 k v m 3 /h Pumped liquid line 50 C 40 C 30 C 20 C 10 C 0 C 10 C 20 C PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (bar) for circulation rate (f rec ) Circulation rate US units conditions, Q N [Tons of Refrigeration], circulation rate = 4, P = 3 psi R 717 C v USgal/min 60 F* 40 F 20 F 0 F 20 F 40 F 60 F 80 F PM PM PM PM PM PM PM PM PM PM PM PM * 2 F below m operating temperature. for P (f P ) P (psi) for circulation rate (f rec ) Circulation rate Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

32 SI units conditions, Q N [kw], circulation rate = 4, P = 0.2 bar R 22 k v m 3 /h Pumped liquid line 50 C 40 C 30 C 20 C 10 C 0 C 10 C 20 C PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (bar) for circulation rate (f rec ) Circulation rate US units conditions, Q N [Tons of Refrigeration], circulation rate = 4, P = 3 psi R 22 C v USgal/min 60 F* 40 F 20 F 0 F 20 F 40 F 60 F 80 F PM PM PM PM PM PM PM PM PM PM PM PM * 2 F below m operating temperature. for P (f P ) P (psi) for circulation rate (f rec ) Circulation rate DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

33 SI units conditions, Q N [kw], circulation rate = 4, P = 0.2 bar R 404A k v m 3 /h Pumped liquid line 50 C 40 C 30 C 20 C 10 C 0 C 10 C 20 C PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (bar) for circulation rate (f rec ) Circulation rate US units conditions, Q N [Tons of Refrigeration], circulation rate = 4, P = 3 psi R 404A C v USgal/min 60 F* 40 F 20 F 0 F 20 F 40 F 60 F 80 F PM PM PM PM PM PM PM PM PM PM PM PM * 2 F below m operating temperature. for P (f P ) P (psi) for circulation rate (f rec ) Circulation rate Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

34 Wet suction line Location of valve in system (marked with grey) Hot gas bypass & defrost line Pump Wet suction line Dry suction line Discharge line Liquid line without phase change Liquid line with or without phase change Location of valve in system (marked with grey) Hot gas bypass & defrost line Gravity Wet suction line Dry suction line Discharge line Liquid line without phase change Liquid line with or without phase change 34 DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

35 SI units Calculation example (R 717 capacities): Running conditions in a plant are as follows: T e = 20 C Q 0 = 100 kw Circulation rate = 3 Max. P = 0.3 bar The capacity table is based on nominal conditions (pressure drop P = 0.2 bar, circulation rate = 4). The actual capacity must therefore be corrected to a nominal condition by multiplication with correction factors. Wet suction line for P 0.3 bar f P = 0.82 for circulation rate f rec = 0.9. Q n = Q 0 f P f rec = = 73,8 kw. From the capacity table a PM 40 with Q n = 107 kw is the correct selection for the application. US units Calculation example (R 717 capacities): Running conditions in a plant are as follows: T e = 20 F Q 0 = 10 TR Circulation rate = 3 Max. P = 5 psi The capacity table is based on nominal conditions (pressure drop P = 3 psi, circulation rate = 4). The actual capacity must therefore be corrected to a nominal condition by multiplication with correction factors. for P 5 psi f p = 0.79 for circulation rate f rec = 0.9. Q n = Q 0 f P f circ = = 7.1 TR From the capacity table a PM 25 with Q n = 10.0 TR is the correct selection for the application. Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

36 SI units conditions, Q N [kw], circulation rate = 4, P = 0.2 bar R 717 k v m 3 /h Wet suction line 50 C 40 C 30 C 20 C 10 C 0 C 10 C 20 C PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (bar) for circulation rate (f rec ) Circulation rate US units conditions, Q N [Tons of Refrigeration], circulation rate = 4, P = 3 psi R 717 C v USgal/min * 2 F below m operating temperature. 60 F* 40 F 20 F 0 F 20 F 40 F 60 F 80 F PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (psi) for circulation rate (f rec ) Circulation rate DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

37 SI units conditions, Q N [kw], circulation rate = 4, P = 0.2 bar R 22 k v m 3 /h Wet suction line 50 C 40 C 30 C 20 C 10 C 0 C 10 C 20 C PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (bar) for circulation rate (f rec ) Circulation rate US units conditions, Q N [Tons of Refrigeration], circulation rate = 4, P = 3 psi R 22 C v USgal/min * 2 F below m operating temperature. 60 F* 40 F 20 F 0 F 20 F 40 F 60 F 80 F PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (psi) for circulation rate (f rec ) Circulation rate Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H

38 SI units conditions, Q N [kw], circulation rate = 4, P = 0.2 bar R 404A k v m 3 /h Wet suction line 50 C 40 C 30 C 20 C 10 C 0 C 10 C 20 C PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (bar) for circulation rate (f rec ) Circulation rate US units conditions, Q N [Tons of Refrigeration], circulation rate = 4, P = 3 psi R 404A C v USgal/min * 2 F below m operating temperature. 60 F* 40 F 20 F 0 F 20 F 40 F 60 F 80 F PM PM PM PM PM PM PM PM PM PM PM PM for P (f P ) P (psi) for circulation rate (f rec ) Circulation rate DKRCI.PD.HL0.A3.02 / 520H0179 Danfoss A/S (AC.MCI/MWA),

39 Dry suction line Location of valve in system (marked with grey) Hot gas bypass & defrost line Pump Wet suction line Dry suction line Discharge line Liquid line without phase change Liquid line with or without phase change Location of valve in system (marked with grey) Hot gas bypass & defrost line Gravity Discharge line Wet suction line Liquid line without phase change Liquid line with or without phase change Location of valve in system (marked with grey) Hot gas bypass & defrost line DX Dry suction line Discharge line Liquid line with or without phase change Danfoss A/S (AC.MCI/MWA), DKRCI.PD.HL0.A3.02 / 520H