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DONG-A VALVE

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¿ÜÇü¼ÒÀç (Valves Shell Material)

Ç¥ÁØ Àç·á ASTM A2216(WCB) ¿Ü¿¡, DAV Cast Steel ¹ëºê´Â ¾Æ·¡¿¡ Ç¥±âµÈ ¼ÒÀç¿¡ µû¶ó ¼±ÅÃÀûÀ¸·Î ÀÌ¿ë °¡´ÉÇÕ´Ï´Ù.


Working Temperature ¢µ(¡É) Standard of Materials
Material Designation ASTM Spec. JIS
Over 23 (-5) up to 800 (427) Corbon Steel A216 WCB SCPH 2
850 (454) C - ¨ö Mo A217 WC1 SCPH 11
*1100 (593) 1 ¨ù Cr - ¨ö Mo A217 WC6 SCPH 21
2 ¨ù Cr - 1 Mo A217 WC9 SCPH 32
*1200 (650) 5 Cr - ¨ö Mo A217 C5 SCPH 61
9 Cr - 1 Mo A217 C12
Down to -50 (-46) Carbon Steel A352 LCB SCPL1
Carbon Steel A352 LCC
- 75 (- 59) C - ¨ö Mo A352 LC1 SCPL 11
- 100 (- 73) 2 ¨ö Ni A352 LC2 SCPL 21
- 150 (- 101) 3 ¨ö Ni A352 LC3 SCPL 31
*Over -320 (-196) up to 1500 (815) 18 Cr - 8 Ni (Co 0.03) A351 LC3 SCS 19
18 Cr - 8 Ni (Co 0.08) A351 CF8 SCS13
18 Cr - 8 Ni - 2 Mo(Co 0.03) A351 CF3M SCS16
18 Cr - 8 Ni - 2 Mo(Co 0.08) A351 CF8M SCS 14
18 Cr - 10 Ni - Cb A351 CF8C
300 (149) 19 Cr - 29 Ni A351 CN7M

- ¹ëºêÀÇ ¿ëÁ¢ ¹è°ü¿¡ ´ëÇÏ¿©, ¸¶°¨À²ÀÌ 1000¡ÆF¿¡¼­ ¿Ï·áµË´Ï´Ù.

- A216,A217, A351,A352 ÀÇ ¾Ð·Â¿ÂµµÀ² »ó¼¼»çÇ׿¡ ´ëÇØ¼­´Â ASME/ANSI B16.34¸¦ Âü°íÇϼ¼¿ä.

ASTM A352ÀÇ ÃÖ¼Ò ÀÛ¾÷ ¿Âµµ´Â ASME B31À» ±âÁØÀ¸·Î ÇÕ´Ï´Ù.




ÀÇÀå ¼ÒÀç(Valves trim material)


¹ëºê ÀÇÀå (Vlave trim)


DESCRIPTION Gate. Valve Globe Valve Check Valve
Body seat surface ¡Û ¡Û ¡Û
Disc seat surface ¡Û ¡Û ¡Ý
Stem(Hinge Pin) ¡Û ¡Û -
Bonnet bush(Baclseat) ¡Û ¡Û -
Others Small internal parts Small internal parts Small internal parts
Specified by API 600/BS 1414 BS 1873 BS 1868

ÀÇÀå ¼ÒÀç(Trim material)

API 600, Table¿¡ ¸í½ÃµÇ¾îÁø ´ÙÀ½ÀÇ ÀÇÀåÀº DAVÇ¥ÁØÀ» µû¸£°Å³ª °í°´ÀÇ ¼±ÅûçÇ×À¸·Î ÇÕ´Ï´Ù.


Trim No.
Symbol
Nominal trim Body Seat surface Disc Seat surface Stem(hinge pin)
and bonnet bush
01 F6 13Cr 13Cr 13Cr
02 304 18Cr - 8Ni 18Cr - 8Ni 18Cr - 8Ni Available
optionally
05 Hardfaced(HF) Stellite#6 Stellite#6 13Cr
08 F6 & HF Stellite#6 13Cr 13Cr
09 Monel Ni- Cu Alloy Ni- Cu Alloy Ni- Cu Alloy Available
optionally
10 316 18Cr - 10Ni - 2Mo 18Cr - 10Ni - 2Mo 18Cr - 10Ni - 2Mo
11 Monel & HF Stellite#6 Ni- Cu Alloy Ni- Cu Alloy
12 316 & HF Stellite#6 18Cr - 10Ni - 2Mo 18Cr - 10Ni - 2Mo
13 Alloy20 19Cr - 29Ni 19Cr - 29Ni 19Cr - 29Ni
14 Alloy20 & HF Stellite#6 19Cr - 29Ni 19Cr - 29Ni

ÀÏ¹Ý ¸í¼¼ ¹× Ç¥ÁØ(General specificaion and standards)


VALVE TYPE GATE GLOBE CHECK
Shell wall thickness API 600 API 600 API 600
General valve design specifications BS 1414 BS 1873 BS 1868
Pressure-Temperature ratings ASME/ANSI B16.34
Face to face or end to end dimensions ASME B16.10
End flange dimensions Gasket contact facing Size 2~20", 24" ASME/ANSI B16.5
22" MSS SP - 44
22" and larger ASME B16.47 Ser A (MSS SP-44) or B (API 605)
Finishes for contact face of RF ASME/ANSI B16.5
Buttwelding end dimensions ASME B16.25
Inside diameter of flanged end minimum ASME/ANSI B16.34
Bolt and nut, thread ASME/ANSI B1.1, B18.2.1, B18.2.2
Material of shell, trim, bolt, nut, and others API 600, ASTM Respective specification
Marking system MSS SP - 25
Test and Inspecton Chemical composition analysis Relevant ASTM
Mechanical property test Relevant ASTM/ASTM A370
Pressure test API 598, BS 5146 and ASME/ANSI B16.34
Radiographic inspection ASME/ANSI B16.34, ASTM E142/E94
Wet magnetic particle inspection ASME/ANSI B16.34, ASTM E709/A275
Liquid penetrant inspection ASME/ANSI B16.34, ASTM E165
Low temperature impact test ASTM A352/E23
Dimensional inspection Relevant valve standards
Visual inspection MSS SP - 55

Nace valves

½ÃÅ­ÇÑ °¡½º³ª źȭ¼ö¼Ò¾×À» Æ÷ÇÔÇÑ ¼ö¼Ò Ȳȭ¹°À» ó¸®Çϱâ À§ÇÏ¿©, µ¿¾Æ¹ëºê´Â NACE MR-01-75 ±âÁØ¿¡ µû¸¥
¿­Ã³¸® ¹× °­µµ¸¦ °¡Áö°í ÀÖ´Â Àç·á·Î ¸¸µé¾îÁø NACE ¹ëºê¸¦ Á¦°øÇÕ´Ï´Ù.

µ¿¾Æ¹ëºêÀÇ NACE¹ëºê´Â °í°´ÀÇ ÁÖ¹®¿¡ ÀÇÇØ¼­¸¸ »ý»êÇÕ´Ï´Ù.


VALVE PARTS ASTM SPECIFICATION NACE HARDNESS API 600 HARDNESS
Body / bonnet A216 WCB Max. HRC 22
HB 237
¤Ñ
Disc A216 WCB or AISI Type 410 ¤Ñ
Disc seat surface 13Cr deposit or AISI Type 410 Min. 300 HB
Body seat ring A105 or AISI Type 410 ¤Ñ
Body seat ring surface Hardface ¤Ñ ¤Ñ
Stem AISI Type 410 Max. HRC 22
HB 237
200~275 HB
Bonnet bush Min. 250 HB
Packing gland ¤Ñ
Lantern ring ¤Ñ
Bonnent bolts A193 B7 ¤Ñ ¤Ñ
A193 B7M Max. HRC 22 (HB 237) ¤Ñ
Bonnet nuts A194 2H ¤Ñ ¤Ñ
A194 2M Max. HRC 22 (HB 237) ¤Ñ