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Gate valve

Cast Steel Gate Valve

Cast steel gate valves can only be fully opened and fully closed to be used for cutting in the pipeline.The entire flow channel is a straight-through passage when the valve is fully-open, and the pressure loss of medium running is minimum.Gate valve is usually for working condition in which the valve is not opened or closed frequently, It's not suitable for adjustment or throttling.The most important feature of the cast steel gate valve of TANA machine is that they can be ensured that the permissible leakage rate can be lower than that specified in API 6D and API 600, and the middle shaft sealing can pass the USA VOC leakage test. Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel may be selected for transportation of water, steam, oil, natural gas, nitric acid, acetic acid, oxidant and urea.

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Description

Cast steel gate valves can only be fully opened and fully closed to be used for cutting in the pipeline.The entire flow channel is a straight-through passage when the valve is fully-open, and the pressure loss of medium running is minimum.Gate valve is usually for working condition in which the valve is not opened or closed frequently, It's not suitable for adjustment or throttling.The most important feature of the cast steel gate valve of TANA machine is that they can be ensured that the permissible leakage rate can be lower than that specified in API 6D and API 600, and the middle shaft sealing can pass the USA VOC leakage test. Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel may be selected for transportation of water, steam, oil, natural gas, nitric acid, acetic acid, oxidant and urea.
Design Features
Full port design  
OS&Y, outside and screw  
Bolted bonnet, back seal structure  
Flexible wedge, fully guided  
Choice of solid or split wedge  
welded seat  
Extended stem design for low temperature  
Flanged or butt-welding ends
Sizes Ranges from 1 1/2” thru 60”
Pressure Ratings from Class 150 to Class 1500, PN16 to PN260
Structured in Bolted Cover, Outside Screw and York, Optional Non-rising Stem
Ends Connections in Flanged R.F or RTJ, Butt-welded and Grooved

Technical Specification
Size:2"-60" or DN50-DN1500
Pressure: Class150-2500LB or PN16-PN250 or 10K-40K
Material:WCB, WCC, LCB, LCC, WC6, WC9, C5, C12, CF8, CF8M, CF3, CF3M, CF8C, CN7M,etc.
Design & Manufacture Std.: API600, ASME B16.34, API6D, BS5351,JIS B2073  
Face to Face Std.: ASMEB16.10 (JIS B2002),API 6D, DIN3202, ASME B16.25
End Connection Std.: ASME B16.5,ASME B16.47, JISB2212-JISB2214,DIN2543-2550,ASME B16.34
Test Standard: ISO5208, API598 (JIS B2003), API 6D, BS 6755
Operated way: Handwheel, Bevel Gear, Pneumatic, Electric Actuator

Main Material list


NO. Part name Material
1 Body ASTM A216 Gr.WCB
2 Seat ring ASTM A105+13Cr
3 Wedge ASTM A216 Gr.WCB+13Cr
4 Stem ASTM A182 F6a
5 Gasket 304 s.s.Jacketed Graphite
6 Stud ASTM A193 Gr.B7
7 Nut ASTM A194 Gr.2H
8 Bonnet ASTM A216 Gr.WCB
9 Back seat ASTM A276 410
10 Packing Graphite
11 Pin C.S.
12 Gland bolt ASTM A193 Gr.B7
13 Gland nut ASTM A194 Gr.2H
14 Bushing  ASTM A276 410
15 Gland ASTM A216 Gr.WCB
16 Stem nut Alumimum Bronze
17 Retaining nut C.S.
18 Handwheel Melleable iron
19 H.W.lock nut C.S.
20 Lubricator Assembly


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