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RKH/SKH Ball Valve

  • Max. Working Pressure: 350bar

  • Nominal Size: 32~50mm

  • Working Temperature:-45℃~+200℃

  • Body Material: 304 or 316L Stainless steel 、Carbon steel

热线电话: 0573-83696688
RKH/SKH Ball Valve
Product description
Parameters Table
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I) RKH/SKH High Pressure Ball Valve (DN32~50 mm)

 

Features
•RKH stainless steel ball valve with a round body, high working pressure and large nominal size
•SKH carbon steel ball valve with a forged body, high working pressure and large nominal size
•Pressure rating (max. working pressure) up to 350 bar

 

II) RKH/SKH-B High Pressure Ball Valve for Gases (max. working pressure: 210~300 bar; see table of working pressures on the next page)

 

Features:
● special seal design; the ball valves have undergone low and high pressure gas tests.
● ≥DN50 ball valve, the use of gas medium, please choose stainless steel body material

 

Ordering Information

 

 

Table of RKH/SKH Ball Valves and Sealing Materials

 

Type Material Uses
Metal Material 304 stainless steel Intended for water, air and slightly corrosive media; temperature: -196℃~+400℃
316L stainless steel Intended for weak acids, alkalis and other corrosive media; temperature: -196℃~+400℃
A105 forged steel Common oil hydraulic systems without special material requirements, etc.; surface galvanized; temperature: -45℃~+250℃
45# carbon steel Common oil hydraulic systems without special material requirements, etc.; surface galvanized; temperature: -45℃~+250℃
Ball Seat Seal POM Mainly used for non-corrosive oils, water and gases; temperature: -30℃~+100℃
PEEK Relatively good corrosion resistance; wide temperature range: -60℃~+250℃
O-ring NBR Intended for oils, water, air and other non-corrosive media; temperature: -35℃~+100℃
CNBR Intended for oils, water, air and other media at low ambient temperature; temperature: -45℃~+100℃
FPM Good chemical adaptability; especially suitable for oils and concentrated acids; temperature: -25℃~+200℃
EPDM Intended for ammonia, steam, formaldehyde and ethylene glycol; mineral oil intolerant; temperature: -50℃~+130℃

 

Common Material Combinations of Ball Valves

 

Material Combination Code Ordering Number (example) Body Ball Seat Seal Stem Seal Applicable Media
Stainless Steel Ball Valve 4425 RKH-G11/4-32-4425 304 POM FPM Water, oil, air and other neutral media; -25℃~+100℃
4423-B RKH-G11/4-32-4423-B 304 POM NBR Air or nitrogen and other neutral gas, -30℃~+100℃
6665 RKH-G11/4-32-6665 316L PEEK FPM Applicable to high-temperature or corrosive media; -25℃~+200℃
Carbon Steel Ball Valve 3123 SKH-G11/4-32-3123 A105 POM NBR Oils; -25℃~+100℃
3168 SKH-G11/4-32-3168 A105 PEEK Low temperature NBR Oils at low ambient temperature; -45℃~+100℃

 

 

Valve Dimensions and Working Pressures [mm]

 

Type of Body Nominal Size
DN
Max. Working Pressure [bar] SW E F H G C S T Mounting Hole Code
POM PEEK
Liquid Gas Liquid Gas
RKH 32 315 300 350 300 17 87 86.5 39.7 M6 50 9 11 F05
40 315 300 350 300 17 95 94.2 44.2 M6 50 9 11 F05
50 315 210 315 210 17 110 110 52.5 M8 70 9 11 F07
SKH 32 315 300 350 300 17 79 86.3 39.5 M6 50 9 11 F05
40 315 300 350 300 17 86 93 43 M6 50 9 11 F05
50 315 - 315 - 17 108 111.5 54 M6 50 9 11 F05

If ball valves with mounting hole are required, add “-D” to the end of the ordering number, for example: RKH-G11/2-40-4425-D.

Table of Technical Data of Various Types of Ball Valve Connections [mm]

 

1) Female Connection: G thread (ISO228-1)

 

Diagram Stainless Steel Ball Valve Ordering Number Carbon Steel Ball Valve Ordering Number DN D L A B Pressure Rating
[bar]

G Female Thread 

RKH-G11/4-32-4425 SKH-G11/4-32-3123 32 G11/4 115 102 210 315
RKH-G11/2-40-4425 SKH-G11/2-40-3123 40 G11/2 120 105 210 315
RKH-G2-50-4425 SKH-G2-50-3123 50 G2 140 113 250 315

 

2)Metric Thread 24° Cone Connection: “L”/“S” Series [mm]

 

Diagram Stainless Steel Ball Valve Ordering Number Carbon Steel Ball Valve Ordering Number DN D d L A B Pressure Rating
[bar]

Metric Thread 24° Cone

RKH-42L-32-4425 SKH-42L-32-3123 32 M52*2 42 128 102 210 250
RKH-48L-40-4425 SKH-48L-40-3123 40 M58*2 150 105 210 210
RKH-60L-50-4425 SKH-60L-50-3123 50 M72*2 164 113 210 210
RKH-38S-32-4425 SKH-38S-32-3123 32 M52*2 38 140 102 210 315
RKH-50S-40-4425 SKH-50S-40-3123 40 M68*2 50 165 105 210 300
RKH-60S-50-4425 SKH-60S-50-3123 50 M76*2 174 113 250 250

 

Diagram Stainless Steel Ball Valve Ordering Number Carbon Steel Ball Valve Ordering Number DN S * d L A B Pressure Rating
[bar]

Weld Fitting

W-RKH-42L-32-4425 W-SKH-42L-32-3123 32 5 42 205 102 210 250
W-RKH-48L-40-4425 W-SKH-48L-40-3123 40 5 48 226 105 210 210
W-RKH-60L-50-4425 W-SKH-60L-50-3123 50 6 60 265 113 210 210
W-RKH-38S-32-4425 W-SKH-38S-32-3123 32 5 38 233 102 210 315
W-RKH-50S-40-4425 W-SKH-50S-40-3123 40 7 50 262 105 210 300
W-RKH-60S-50-4425 W-SKH-60S-50-3123 50 7 60 276 113 250 250

*If there is a high deviation of weld nipple wall thickness, specify when placing an order, for example: W-RKH-42L-32-4425(42*7), where “*7” indicates the weld nipple wall thickness S is 7.

 

Torque Curves: The working torque of ball valves depends on pressure and ball seat sealing material. In the diagram, the working medium is oil, the seal is POM and (supposing water*1.2, air*1.4 and granular powder*1.6) actuator torque = 1.2*Torque (where: 1.2 is the safety factor).

 

 

Ball Valves with Lock: RKH and SKH series ball valves offered by EAGLE can all be provided with a structure for lock, thereby protecting the open/closed status of critical ball valves. The lock needs to be separately purchased by customers.

 

Please add “AV” to the end of the ordering number when placing an order, for example: RKH-G2-50-4425-AV

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2021-09-13 09:45:37
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