Globe Valve

Globe Valve 43

GLOBE VALVE In this screw-down stop valve, or globe valve as it is commonly called , the axis of the stem is at right angles to the body seat face. The relatively short movement required of the stem to open or close the valve and the very positive seatingaction combine to make this type of valve well suited for dutiesas a stop valve or for the close regulation or throttling of fl ow. All contact between body seat and disk ends as soon as the disk is moved from the closed position so that the mechanical wear of the sealing faces is minimized. Whatever

wear may occur during service does not create a major problem as the body seat and disk in most globe valves can be repaired or replaced with a minimum of diffi culty and without having to remove the valve, the pipe line, a distinctadvantage where welded-in valves are concerned. The minimum resistance to fl ow of a globe valve is higher than in most other valves because of the changes in direction of fl ow as the fl uid passes through the valve. This may vary considerably, however, depending on the body design and the disposition of the stem relative to the inlet and outlet ports.

In common with gate valves, both inside and outside screw arrangements are used for globe valves. The larger the

valves are usually of outside screw design, while the insidescrew arrangement predominates for the smaller ones.

Stem Arrangement

Various seating designs are available to suit different service requirements and provide different fl ow characteristics. The conventional narrow seat type (Fig. 1) has tapered or spherical shaped surface on the disk and a fl at angled surface on the body seat and there is narrow line contact between disk and seat. Provided suitable materials are used for disk and seat, this line bearing breaks down hard deposits that may form on the seat on some services and assures pressure-tigth closure. There is little protrusion of the disk into the valve orifi ce so that full bore fl ow is obtained with only a short of lift of the disk, which makes this form of seating unsuitable for close regulation of fl ow. Preferably, such a valve should be used wide open or fully closed. To achieve better fl ow characteristics the disk is made to project into the body seating orifi ce. The disk maybe of the plug type (Fig. 2), which is conical in shape with matching conical seat in the body, giving reasonable fl ow control and exceptional resistance to galling, erosion, and wire drawing under throttling conditions, or it may be contoured to provide specifi cfl ow characteristics, e.g., percentage fl ow equal to percentage lift. Other specialized percentage fl ow equal to percentage lift. Other specialized designs may use hollow disks with vee

shaped or contoured body seatings to achieve a variety of fl ow conditions. ‘Soft’ forms of seating are also employed, including PTFE (or other plastic) seat or disk inserts and the very popular composition disk (Fig. 3), which is used frequently for steam and gas services, particularly in low pressure bronze valves. ‘Soft’ seatings provide tight shut-off with the minimum effort but they are not suitable for throttling duties as they can be quickly damaged by wire drawing. Disk replacement is a simple matter and, providing the body seat face is undamaged, seating performance can be quickly restored to ‘as new’ condition. Also, by using disks of different materials a valve may be made suitable for other classes of service. Generally the disk and stem are seperate components and connected together in such a manner that the disk is free to revolve independently of the stem and is able to swivel. This allows the disk to sit squarely on its seat and avoids frictional contact that might damage the seating surfaces. In some small valves, e.g., needle valves, the disk and stem may be integral, and while these will give close and stable regulation of fl owunder high pressure drop conditions, they are not best suited for use as shut-off valves.

Seatings

Globe Valve44

Angle Valve In the angle type of globe valve (Fig. 4) the fl ow has to make only one change of direction so that the pressure drop across the valve much less than in a conventional design of globevalve.

Oblique Valve In the oblique or ‘Y’ type globe valve (Fig. 5) the orifi ce in the body is arranged at an incline to the normal fl ow line. This results in less disruption of the fl ow pattern than in a conventional globe valve and a correspondingly smaller loss of pressure across the valve.

Needle Valve The needle valve (Fig. 6) is designed to provide fi ne control of fl ow and is generally restricted to small sizes of pipes. The disk, commonly intgral with the stem, has a needle shaped end which fi ts very accurately into the body

Types Types of Valves

seat and the threads on the stem are made of fi ner pitch than usual to obtain close regulation of fl ow. Usually needle valves have a reduced size of orifi ce in relation to the pipe size.

Piston Type This type (Fig. 7) is a variant of the conventional globe valve in which the usual form of the disk and seating is replaced by a design seating based on the piston principle. Aprecision ground piston is connected to the stem and the seal is formed by two resilient sealing rings surrounding the piston. The rings are seperated by a lantern ring and are compressed firmly around the piston by the load exerted on the cover by the cover nuts. The resilient rings are replaccable and can be provided in various materials including PTFE. The valve is intended primarily for ‘open’ and ‘shut’ duties but can be fitted with a specially shaped piston or special lantern ring for close regulation of fl ow.

Globe Valve 45

Hand Wheel

Yoke BrushYoke

Stem

Gland

Bonnet

Gland Packing

Bonnet Gasket

Back Seat

Disk Stem Nut

Disk

Body Seat Ring

Body

Fig. 1. Globe valve with outside screw and conventional disk

Type of Globe Valve

Fig. 2. Globe valve with inside screw and plugdisk

Fig. 3. Globe valve with inside screw and plugcomposition disk

Fig. 4. Angle Globe valve

Globe Valve46

Globe Valve

2

34

56

1

2

3

Impact handwheel supplied by manufacturer’s option or on customer request.

Gland eyebolts are mounted to swing aside to facilitate packing maintenance.

Male and female bonnet joints for 150lb to 600lb valves, and ring joint for the 900lb & above valves or

as an optional for 600lb valves on customer request.

4

5

6

Anti blow-out stem design with conical backseat surface to permit repacking of valve in the fully open position.

Plug seat surface is standard disc design as well as sperical and fl at seating surface is optional oncustomer request.

Seat face with satelite 6 is standard design.

1

Globe Valve 47

Globe Valve Material List

Globe Valve48

Globe Valve Dimension & Weight

Class 150 Cast Carbon Steel Globe Valve


Globe Valve 49




Globe Valve50




Globe Valve 51

Pressure Seal Globe Valve

3

4

5

1

2

Thrust ring nut absorb all the thrust applied by the internal pressure.

Thrust ring to provide bearing surface and prevent deformation of the gaskets.

Stainless steel inlay to ensure soundness and corrosion-resistance in the vital body sealing zone for carbon and alloy steel valves.

Soft steel gasket seal to provide large contact area for perfect sealing.

Seat face with satelite 6 is standard design.

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4

5

Globe Valve52

Pressure Seal Globe Valve Material List

Globe Valve 53

Pressure Seal Globe Valve Dimension & Weight



Globe Valve54



Pressure Seal Globe Valve Dimension and Weight

Globe Valve 55

Pressure Seal Globe Valve Torque & Thrust

Note: 1. All above data are based on Single Head thread. 2. Torques shown in these tables are to be used as a guide for actuator selection. A safety factor of 1.25-1.5 is recommended for actuator sizing.

Globe Valve56

Pressure Seal Globe Valve Torque & Thrust

Globe Valve 57

3

5

6

4

2

1 Safe and tight stem seal by means of positive backseat and long-life leak proof stuffi ng box design.

Solid body guided disc assuring perfect alignment of disc and seat and reducingwear on seating surface.

Long thread stem nut providing long thread life and permitting the removal of hand wheel even at full open.

Gland eyebolts facilitating packing maintenance.

Leak proof body-bonnet Joint Craving eliminating the unwinding of the SS spiral metal.

Plug disc is standard design, Optional plate, needle, ball or parabolic disc is available upon request,

1

2

3

4

5

6

Forged Steel Globe Valve

Globe Valve58

Forged Steel Globe Valve G.A. Drawing

Material List

Bolted Cover Welded Cover

Y Pattern Welded Cover Integral Flanged Ends

Globe Valve 59

Material List

Class 800 Bolted Bonnet or Welded Bonnet Regular and Full Port - ENISO 15761. Outside Screw & Yoke - Threaded and Socket Weld Ends

Class 800 Y Pattern Welded Bonnet Full Port - ENISO 15761 Outside Screw & Yoke - Threaded and Socket Weld Ends

Class 1500 Bolted Bonnet or Welded Bonnet Regular and FullPort - ENISO 15761. Outside Screw & Yoke - Threaded and Socket Weld Ends

Forged Steel Globe Valve

Globe Valve60

Class 1500 RTJ Bonnet Full Port - ENISO 15761. Outside Screw & Yoke - Threaded and Socket Weld Ends

Class 1500 Y Pattern Welded Bonnet Full Port - ENISO 15761. Outside Screw & Yoke - Threaded and Socket Weld Ends

Class 2500 Welded Bonnet Full Port - B16.34. Outside Screw & Yoke - Threaded and Socket Weld Ends

Class 2500 RTJ Bonnet Full Port - B16.34. Outside Screw & Yoke - Threaded and Socket Weld Ends

Forged Steel Globe Valve Dimension & Weight

Globe Valve 61

Class 2500 Y Pattern Welded Bonnet Full Port - B16.34. Outside Screw & Yoke - Threaded and Socket Weld Ends

Class 150-300-600 Bolted Bonnet & Integral Flanged Ends Regular Port - EN ISO 15761. Outside Screw & Yoke - Integral Flanged Ends according to ASME B 16.5

Class 1500 RTJ Bonnet & Integral Flanged Ends Full Port - EN ISO 15761. Outside Screw & Yoke - Integral Flanged Ends according to ASME B 16.5

End to End dimensions according to ASME B 16.10

End to End dimensions according to ASME B 16.10

Forged Steel Globe Valve Dimension & Weight

Globe Valve62

Cast Bronze ANSI Valves

Application: Seawater, Fresh Water, OilRemark 1. The name plate shall be specifed by purchaser as required.

Test Pressure (Psi)

Dimension Table (Unit : mm)

CLASS 150 Globe Valves

CLASS 150 Globe Screw-Down Check Valves

Globe Valve 63

Bolted Bonnet Renewable seatNon Rising Stem Flanged Ends


Test Pressure (Psi)




Application: Seawater, Fresh Water, Oil, AirRemark 1. The name plate shall be specifed by purchaser as required.

Globe Valve64

Test Pressure (Psi)

(Unit : mm)





Dimension Table

Application: Seawater, Fresh Water, Oil, AirRemark 1. The name plate shall be specifed by purchaser as required.

Globe Valve 65



Test Pressure (Bar)

Cast Iron DIN Valves

PN 6 / 10 / 16 Globe Valves / Globe Screw-Down Check Valves

Application: Water, Oil, AirRemark 1. The name plate shall be specifed by purchaser as required.

Globe Valve66

Test Pressure (Bar)



Cast Bronze DIN Valves

PN 16 Globe Valves / Globe Screw-Down Check Valves

Remark 1. The nameplate shall be specifi ed by purchaser as required.

Globe Valve 67


Test Pressure (MPa)


PN 40 Globe Valves

Remark 1. The fl anges shall conform to nominal pressure of 10K of JIS 2240.

Globe Valve68


Test Pressure (Bar)

Cast Iron DIN Valves

Bolted Bonnet Renewable seatRising Stem Flanged Ends

PN 6 / 10/ 16 Angle Valves / Angle Screw-Down Check Valves


Globe Valve 69

Test Pressure (Bar)

(Unit : mm)


Dimension Table

Ductile Cast Iron DIN Valves



Globe Valve70


Test Pressure (Bar)


Cast Steel DIN Valves



Globe Valve 71

Test Pressure (MPa)

(Unit : mm)Dimension Table

Cast Bronze Marine Valves

JIS 10K Globe Valves

JIS 10K Globe Screw-Down Check Valves

Application: Seawater, Fresh Water, Oil, AirRemark 1. The fl anges shall conform to nominal pressure 5K and 10K.

Globe Valve72

Application: Seawater, Fresh Water, Oil, AirRemarks: 1. The fl anges shall conform to nominal pressure 5K and 16K of JIS B2240. 2. JIS F7301 5K for nominal dia 50 and 65 shall be made bolted Bonnet type.

Bolted Bonnet Integral seatRising Stem Flanged Ends


Test Pressure (MPa)

Fluid Condition & Max. Working pressure (MPa)


JIS 5K Globe Valves JIS F7301


JIS 5K Globe Screw-Down Check Valves JIS F7351


Globe Valve 73

Test Pressure (MPa)




JIS 5K Globe Valves Ref. to JIS F7305



JIS 5K Globe Screw-Down Check Valves Ref. to JIS F7353



Application: Seawater, Fresh Water, Oil, AirRemarks: 1. The fl anges shall conform to nominal pressure 5K, 10K and 16K of JIS B2210. 2. The name plate shall be specifi ed by purchaser as required.

Globe Valve74


Test Pressure (MPa)



Application: Seawater, Fresh Water, Oil, AirRemark: 1. The fl anges shall conform to nominal pressure 5K and 16K of JIS B 2240. 2. JIS F7301 5K for norminal dia 50 and 65 shall be made bolted Bonnet type.






Globe Valve 75


Test Pressure (MPa)



Remarks: 1. The fl anges shall conform to nominal pressure 5K, 10K and 16K of JIS B2210. 2. The name plate shall be specifi ed by purchaser as required.

Cast Iron Marine Valves







Globe Valve76

Test Pressure (MPa)


Union Bonnet Integral seatRising Stem


Cast Steel Marine Valves





Application: Seawater, Fresh Water, Oil, Air, SteamRemark: 1. The fl anges shall conform to nominal pressure 10K and 20K of JIS B 2210. 2. The name plate shall be specifi ed by purchaser as required.

Globe Valve 77


Test Pressure (MPa)


Application: Water, Oil, Air, Steam Remark: 1. The fl anges shall conform to nominal pressure 30K and 40K of JIS B2210. 2. The name plate shall be specifi ed by purchaser as required.






Globe Valve78

Test Pressure (MPa)








Application: Seawater, Fresh Water, Oil, Air, SteamRemark: 1. The fl anges shall conform to nominal pressure 5K, 10K and 16K of JIS B 2210. 2. The name plate shall be specifi ed by purchaser as required.

Globe Valve 79


Test Pressure (MPa)







Application: Seawater, Fresh Water, Oil, Air, SteamRemark: 1. The fl anges shall conform to nominal pressure 5K, 10K and 16K of JIS B 2210. 2. The name plate shall be specifi ed by purchaser as required.

Globe Valve80

Test Pressure (MPa)


Union Bonnet Rising Stem Flanged Ends


Forged Steel Marine Valves

JIS 40K Globe Valves

JIS 40K Globe Screw-Down Check Valves

Remark: 1. The fl anges shall conform to nominal pressure 40K of JIS B2210. 2. The name plate shall be specifi ed by purchaser as required.

Globe Valve 81


Test Pressure (MPa)



PN 16 Angle Valves / Angle Screw-Down Check Valves

Application: Seawater, Fresh Water, Oil, AirRemark 1. The name plate shall be specifi ed by purchaser as required.

Globe Valve82

Test Pressure (MPa)



Ductile Cast Iron DIN Valves

PN 6 / 10 / 16 Angle Valves / Angle Screw-Down Check Valves

Application: Seawater, Fresh Water, Oil, Air, SteamRemark 1. The name plate shall be specifi ed by purchaser as required.

Globe Valve 83


Test Pressure (MPa)


Cast Steel DIN Valves

PN 6 / 10 / 16 Angle Valves / Angle Screw-Down Check Valves

Application: Seawater, Fresh Water, Oil, Air, SteamRemark 1. The name plate shall be specifi ed by purchaser as required.

Globe Valve84

Test Pressure (MPa)


Screwed Bonnet Renewable seatRising Stem Flanged Ends

Remark: 1. The fl anges shall conform to nominal pressure 5K and 16K of JIS B2240. 2. JIS F7301 5K for nominal dia 50 and 65 shall be Bolted Bonnet type.



JIS 5K Angle Valves JIS F7302


JIS 5K Angle Screw-Down Check Valves JIS F7352


Globe Valve 85



Test Pressure (MPa)


Application: Seawater, Fresh Water, Oil, AirRemark: 1. The fl anges shall conform to nominal pressure 5K, 10K and 16K of JIS B2210. 2. The name plate shall be specifi ed by purchaser as required.

JIS 5K Angle Valves Ref. to JIS F7306



JIS 5K Angle Screw-Down Check Valves Ref. to JIS F7354



Globe Valve86

Test Pressure (MPa)


Union Bonnet Integral seatRising Stem Flanged Ends

Remark: 1. The fl anges shall conform to nominal pressure 5K and 16K of JIS B2240. 2. JIS F7301 5K for nominal dia 50 and 65 shall be Bolted Bonnet type.







Globe Valve 87

Cast Iron Marine Valves


Test Pressure (MPa)









Remark 1. The fl anges shall conform to nominal pressure 5K, 10K and 16K of JIS B2210. 2. The name plate shall be specifi ed by purchaser as required.

Globe Valve88

Application: Seawater, Fresh Water, Oil, AirRemark: 1. The fl anges shall conform to nominal pressure 5K, 10K and 16K of JIS B2210. 2. The name plate shall be specifi ed by purchaser as required.


Test Pressure (MPa)







Globe Valve 89


Test Pressure (MPa)








Remark: 1. The fl anges shall conform to nominal pressure 10K and 20K of JIS B2210. 2. The name plate shall be specifi ed by purchaser as required.

Globe Valve90


JIS 10K Hull Angle Valves




Test Pressure (MPa)

Remark: 1. The fl anges shall conform to nominal pressure 5K and 10K of JIS B2210. 2. The name plate shall be specifi ed by purchaser as required.

Documents

Globe Valve