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Honeywell VGF21, Данные о продукции, Страница: 16 / 20

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VGF FLANGED GLOBE VALVES

63-2618—01

16

OPERATION

Two-Way Valves

Figs. 19 and 20 shows 2-way valves in the fully closed 
position.

Pressure-Balanced Valve (Fig. 19)

The pressure-balanced design combines close-off 
pressures comparable to a ball valve with traditional globe 
valve flow control accuracy in large valve body sizes.

The pressure-balanced valve seat includes a sealed 
pressure chamber. These valves operate as follows:

1.

With the valve closed, pressure at the A port is pres-
ent in the chamber that forms the upper section of 
the plug.

2.

This equalizes the pressure above and below the 
seat.

NOTE:

As the valve opens/closes, the chamber pressure 
equalizes in either direction.

3.

As a result, the pressure of the medium does not 
affect the ability of the actuator to open/close the 
valve. The valve actuator works against only pressure 
chamber seal friction.

4.

This is particularly useful when the pressure of the 
medium undergoes significant variation.

5.

Regardless of pressure variation, valve operation is 
relatively smooth throughout the travel of the stem.

NOTE:

Both equal percentage (VGF21EP) and linear 
(VGF21LP) flow characteristics are offered.

Standard Plug Valve (Fig. 20)

These valves have a metal-to-metal seat. As these models 
share body castings with the pressure-balanced models, 
the full stroke of the valve stem can be greater than the 
control stroke dimension. (See dimension Y, in Table 8.) 
Dimension Y is measured from the closure of the A port. 
Honeywell actuators are constructed to this Y dimension, 
and limit stem travel accordingly.

Flow does not increase with stem travel greater than 3/4 
in. (20 mm) in 2-1/2 and 3 in. valves,

IMPORTANT

All VGF valves reference their flow and stroke to 
the A port; actuators must be configured to pro-
vide positive closure of this port.

Fig. 19. Two-way pressure-balanced valve operation.

Fig. 20. Two-way standard valve operation.

Three-Way Valves

Figs. 21 and 22 show 3-way valves in the fully closed 
position, with no flow between the A port and AB port.

ELECTRIC CONTROL

Upon power failure:
• Spring return actuators return the valve to its normal 

position. This position (open or closed to the A or the B 
port) depends on the actuator installation.

• Non-spring return actuators hold the last commanded 

position.

PNEUMATIC CONTROL

Upon loss of control air pressure:
• The actuator returns the valve to its normal position. 

This position (open or closed to the A or the B port) 
depends on the actuator model.

A PORT

AB PORT

M22616C

PRESSURE- 

BALANCED

VALVE

PLUG

A PORT

AB PORT

STANDARD 

VALVE

M36096

PLUG

Содержание VGF21

Страница 1: ... to close port A AB All others Stem down to close port A AB Controlled Media Water up to 50 glycol solution Saturated steam 2 way models up to 100 psig Not suitable for open loop systems such as condenser water or potable water Valve Body Temperature Pressure Ratings Water ANSI Class 125 and 250 See Table 1 Steam 337 F 170 C 100 psig 689 kPa Flow Capacity See Table 8 Stroke and Mounting 2 1 2 and ...

Страница 2: ... in DN100 150 209116 NOTE Packing kits include copper ring spring bearing packing and gasket Table 1 Water Temperature and Maximum Pressure Temperature F C System Pressure VGF21 VGF31 VGF22 VGF32 35 to 130 2 66 175 psig 1206 kPa 400 psig 2758 kPa Up to 200 93 165 psig 1138 kPa 370 psig 2251 kPa Up to 250 121 150 psig 1034 kPa 340 psig 2344 kPa Up to 300 149 140 psig 965 kPa 310 psig 2137 kPa Up to...

Страница 3: ...uator Stroke inch 3 4 3 4 3 4 3 4 3 4 1 1 2 Connection Size inch Stem Travel inch Body Pattern Flow Characteristics Valve Part Number Close Off psi Class 125 Pressure Balanced Globe Valves 2 1 2 3 4 2 Way Equal Percentage VGF21EP25 175 175 175 175 175 3 3 4 2 Way Equal Percentage VGF21EP30 175 175 175 175 175 4 1 1 2 2 Way Equal Percentage VGF21EP40 175 5 1 1 2 2 Way Equal Percentage VGF21EP50 175...

Страница 4: ...ay Equal Percentage VGF22ES50 13 6 1 1 2 2 Way Equal Percentage VGF22ES60 13 2 1 2 3 4 Mixing Equal Percentage VGF32EM25 23 23 23 23 94 3 3 4 Mixing Equal Percentage VGF32EM30 15 15 15 15 58 4 1 1 2 Mixing Equal Percentage VGF32EM40 33 5 1 1 2 Mixing Equal Percentage VGF32EM50 13 6 1 1 2 Mixing Equal Percentage VGF32EM60 13 2 1 2 3 4 Diverting Linear VGF32LD25 17 17 17 17 68 3 3 4 Diverting Linear...

Страница 5: ...2 3 4 2 Way Linear VGF21LP25 175 175 175 175 3 3 4 2 Way Linear VGF21LP30 175 175 175 175 4 1 1 2 2 Way Linear VGF21LP40 175 175 5 1 1 2 2 Way Linear VGF21LP50 175 175 6 1 1 2 2 Way Linear VGF21LP60 175 175 Class 125 Standard Globe Valves 2 1 2 3 4 2 Way Equal Percentage VGF21ES25 39 68 61 105 3 3 4 2 Way Equal Percentage VGF21ES30 19 33 30 52 4 1 1 2 2 Way Equal Percentage VGF21ES40 22 39 5 1 1 2...

Страница 6: ...001D1018 Q5001D1026 Actuator torque lb in 150 150 300 300 Stem Force lbf 160 160 320 320 Linkage Stroke inch 3 4 3 4 3 4 1 1 2 Connection Size inch Stem Travel inch Body Pattern Flow characteristics Valve Part Number Close Off psi Class 125 Pressure Balanced Globe Valves 2 1 2 3 4 2 Way Equal Percentage VGF21EP25 175 175 175 3 3 4 2 Way Equal Percentage VGF21EP30 175 175 175 4 1 1 2 2 Way Equal Pe...

Страница 7: ...1 2 Diverting Linear VGF31LD50 10 6 1 1 2 Diverting Linear VGF31LD60 10 Class 250 Standard Globe Valves 2 1 2 3 4 2 Way Equal Percentage VGF22ES25 27 27 55 3 3 4 2 Way Equal Percentage VGF22ES30 13 13 27 4 1 1 2 2 Way Equal Percentage VGF22ES40 27 5 1 1 2 2 Way Equal Percentage VGF22ES50 10 6 1 1 2 2 Way Equal Percentage VGF22ES60 10 2 1 2 3 4 Mixing Equal Percentage VGF32EM25 34 34 69 3 3 4 Mixin...

Страница 8: ... load conditions Maximum capacity the valve must deliver Maximum line pressure differential against which the valve actuator must close Fig 3 Dimensions for two way models in inches mm See Table 8 Fig 4 Dimensions for three way models in inches mm See Table 8 Model Thread of Holes VGF31EM25 0 625 11 4 VGF31EM30 0 625 11 4 VGF31EM40 0 625 11 8 VGF31EM50 0 750 10 8 VGF31EM60 0 750 10 8 VGF32EM25 0 7...

Страница 9: ...SI Class 125 Stem up to close A AB VGF31EM25 2 1 2 65 70 60 10 7 8 276 3 15 16 100 7 178 3 3 4 95 4 3 16 107 3 4 19 VGF31EM30 3 80 120 103 11 3 4 298 3 15 16 100 7 1 2 191 4 3 8 111 VGF31EM40 4 100 150 129 13 7 8 352 5 8 16 140 9 229 5 1 8 130 6 11 16 170 1 1 2 38 VGF31EM50 5 125 320 275 15 3 4 400 5 3 8 137 10 254 5 3 4 146 VGF31EM60 6 150 370 318 17 3 4 451 5 11 16 145 11 279 6 5 8 168 3 way Mix...

Страница 10: ... 50 6 40 5 35 4 30 3 20 2 15 1 5 0 0 L U L U 12 83 13 90 14 96 15 103 16 110 17 117 18 124 19 131 20 138 21 144 22 152 23 159 24 165 25 172 12 83 11 76 13 90 14 96 15 103 16 110 17 117 18 124 12 83 11 76 13 90 14 96 15 103 16 110 17 117 18 124 19 131 20 138 21 144 22 152 23 159 24 165 25 172 19 131 20 138 21 144 22 152 23 159 24 165 25 172 7 48 8 55 9 62 10 69 0 0 10 69 20 138 30 207 40 276 60 414...

Страница 11: ... 3 IN 4 IN 5 IN 6 IN WITH 13 IN D A PNEUMATIC ACTUATOR NORMALLY OPEN PORTS B TO AB CLOSEOFF PRESSURE RATINGS PSI kPa SIZE 2 1 2 INCH S I Z E 3 A N D 4 I N C H M36643 S I Z E 5 A N D 6 I N C H CLOSEOFF PRESSURE AT VARIOUS CONTROL AIR PRESSURES FOR VGF FLANGED VALVES AND MP953 PNEUMATIC ACTUATORS AIR PRESSURE REQUIRED TO OPERATE PRESSURE BALANCED VGF VALVES 1 2 0 0 10 69 20 138 30 207 40 276 60 414 ...

Страница 12: ...skilled personnel and in strict accordance with the installation instructions and local regulations See Fig 8 for proper hoisting method Honeywell assumes no responsibility for damages or injuries resulting from non compliance with installation instructions or standard good practice when mounting operating or maintaining the valves even if not explicitly mentioned in the installation instructions ...

Страница 13: ... correct actuator available for the installation See Table 9 for recommended installation clearance from valve bonnet IMPORTANT When using VGF valves with pneumatic MP953C and MP953E direct acting actuators the following stroke limiting accessories are required to prevent over travel and damage to the diaphragm See Fig 21 VGF21ES25 272629A stem collar purchased separately VGF21ES30 272629A stem co...

Страница 14: ...953E MP953C POSITIONER ON MP953E ONLY MINUMUM CLEARANCE MP953C E 1 2 3 4 M7993B OPERATION SIZE NOMINAL DIA 8 INCH 13 INCH 8 1 4 210 13 1 2 343 11 1 8 283 18 1 8 460 6 1 2 165 10 254 5 3 8 137 7 11 16 195 2 1 2 64 7 178 X 7 178 5 5 8 142 KNOCKOUTS 2 7 8 22 9 3 8 239 10 3 8 264 14 1 4 360 MINIMUM CLEARANCE ML6421A YOKE DIAMETER 1 3 8 35 M7978 2 1 2 64 7 178 X 7 178 8 204 11 7 8 301 12 3 4 326 16 7 8...

Страница 15: ...ns in in mm Fig 18 Q5024 Dimensions 5 5 15 135 6 5 16 161 x 2 11 16 67 14 5 16 364 MINIMUM CLEARANCE 11 1 4 284 7 5 8 192 M7892A 1 2 13 FPT YOKE DIAMETER 1 3 8 35 4 5 8 117 9 1 2 241 6 9 16 166 1 7 8 48 1 1 Q5020A B D 4 7 16 112 Q5020C 3 7 8 98 M16346A Linkage A B C D E Shaft Dia Q5024B2230 Q5024B2240 4 3 8 4 6 11 2 3 8 19mm Q5024B2230 Q5024B2240 M36664 E B C A D ...

Страница 16: ...alve Fig 20 These valves have a metal to metal seat As these models share body castings with the pressure balanced models the full stroke of the valve stem can be greater than the control stroke dimension See dimension Y in Table 8 Dimension Y is measured from the closure of the A port Honeywell actuators are constructed to this Y dimension and limit stem travel accordingly Flow does not increase ...

Страница 17: ...sure the stem remains raised while servicing the valve or installing stem extensions The stem collar provides a hard stop for direct acting MP953 pneumatic actuators and should not be removed Note that the full stroke of the valve stem can be greater than the control stroke dimension Y in Table 8 which is measured from the closure of the A port Honeywell actuators are constructed for this Y dimens...

Страница 18: ...ULL HEAT PROPORTIONED HEAT SUPPLY MAIN RETURN MAIN NO HEAT HEATING COIL VGF3 AB 5 GPM A B 5 GPM AB 5 GPM A B 2 5 GPM 2 5 GPM VGF3 VGF3 AB 5 GPM A B 5 GPM NO FLOW THROUGH COIL A B C M36098 BOILER PUMP VGF31EM A AB B M36099 PUMP VGF31LD A AB B BOILER BYPASS M36100 MIXED DISCHARGE WATER TO HEAT LOAD CHECK VALVES M13737B SUPPLY RETURN AB PORT A PORT B PORT COIL SUPPLY RETURN AB PORT A PORT B PORT COIL...

Страница 19: ...ect coupled linear valve actuators or linkages and rotary actuators Topic Information Valve does not move freely Possible cause Contamination Over time scale rust magnetite sand and silt can cause wear of valve components The presence of suspended rust in a hydronic system voids most industry warranties Appropriate system flushing filtration and chemical treatment are required to maintain proper o...

Страница 20: ...8 01 M S Rev 12 16 Printed in United States By using this Honeywell literature you agree that Honeywell will have no liability for any damages arising out of your use or modification to the literature You will defend and indemnify Honeywell its affiliates and subsidiaries from and against any liability cost or damages including attorneys fees arising out of or resulting from any modification to th...

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