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Honeywell VGF21 Product Data Download Page 19

VGF FLANGED GLOBE VALVES

19

63-2618—01

CHECKOUT AND TROUBLESHOOTING

Actuators

NOTE:

For valve actuator operation instructions, see the 
Product Data sheet for the specific actuator.

1.

Operate the control system and check valve opera-
tion to ensure the valve stem can position the valve 
smoothly through full stroke without binding.

2.

 Verify that the actuator fully closes the A port.

3.

Perform the checkout tests included with the actua-
tor instructions.

Table 10. VGF Valve Checkout and Troubleshooting.

TYPICAL SPECIFICATIONS

Valve housing shall consist of cast iron and shall be ANSI-
rated to withstand the pressures and temperatures 
encountered. Automatic control valves shall have flanged 
fittings, 2-1/2 in. through 6 in. size.

Valves shall have stainless steel plugs, seats, and stems, 
and be constructed with replaceable spring-loaded 
reinforced carbon-filled Teflon packing.

Straight through and diverting valves shall have a 
maximum seat leakage rate of 0.05% Cv at the control 
port and shall have 50:1 rangeability or better. Pressure-
balanced valves shall have a maximum seat leakage rate 
of 0.01% at 175 psi differential pressure.

All valves shall be provided with either linear or equal 
percentage contoured throttling plugs for water, glycol-
water, or steam service. Three-way valves shall be 
available in either mixing or diverting configurations.

Valves shall be manufactured by the same company that 
manufactures the direct 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 operating 
conditions.

•

Boiler and chiller manufacturers publish water quality guidelines. Specific conditioning regimens depend on system.

Valve Leak-by

•

Damage to the plug or seat caused by particulate, wire draw, or steam corrosion requires valve replacement.

Valve stem leaks

•

Replace the stem packing using the matching repacking kit. (See the Specifications section for the proper 
accessory.)

•

If the valve stem is bent, the valve must be replaced.

Improper Control

•

Pressure drop across the valve must be at least as great as the pressure drop across the controlled load. If not, valve 
authority and control span are reduced.

•

If necessary, use pipe transitions in order to use a valve body with the proper Cv rating. Transition should be installed 
approximately 6 pipe diameters from valve.

Noisy Valve

•

Limit differential pressure across valve seats to 20 psi.

•

This recommendation is independent of published close-off ratings.

Actuator Failure in Steam Applications

•

Take care not to exceed valve temperature ratings. This can result in damage not covered by the Honeywell limited 
warranty.

•

To protect actuators from excess heat, orient the valve so the actuator is not directly over the piping, and/or use a 
43196000 High Temperature Kit.

Summary of Contents for VGF21

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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 ...

Page 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 ...

Page 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...

Page 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...

Page 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 ...

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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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