
6mo Check Valve is used in super heaters, heat exchangers, boilers, and in other high temperature and high pressure applications. They are used in domestic, commercial, and industrial applications to regulate the flow of liquid. 254 Smo Check Valve has a gate that is connected to a threaded stem. The threaded stem is connected to a handwheel which when rotated rises or lowers the stem. This in turn pushes the gate inward and outward. 6 Moly Alloy Check Valve is open when the gate is outside the seat and is closed when it is inward in the seat. This helps in the unidirectional flow of the fluids.
Alloy 254 SMO Check Valve has a tensile strength of 650 psi and a melting point that ranges between 1320 and 1390 degrees C. these valves can resist seawater as well as excessive chloride bearing media. Moreover, these UNS S31254 inline Check Valves can also resist stress corrosion cracking. The valves produced by us contain high quality raw material. This ensures that the DIN 1.4547 Spring Check Valve manufactured contains the best possible qualities.
| Description | Price |
| 6 Moly Alloy Poppet Check Valves |
US$40.12-US$39.25/ Piece |
| SMO 254 Instrumentation Valves |
US$48.12-US$49.25/ Piece |
| Alloy 254 SMO Spring Check Valves |
US$35.12 / Piece |
| 254 Smo Check Valves |
US$328.12 / Piece |
There are various check valves available in the market made up of various materials and in different dimensions. Smo 254 Check Valve is one such type of valve that belongs to the international standard ASTM a182. It can be used in high pressure and high temperature applications. smo 254 check valve manufacturers in India produce these valves using austenitic stainless steel that is also known as 6 moly grade. This material is said to be strong, corrosion, and temperature resistant. The valves produced and supplied by us are durable and reliable.
| BRAND NAME | TU-LOK |
| MANUFACTURER OF 254 SMO VALVE SIZE | 1/8" TO 2" / 6 MM TO 50 MM |
| CONNECTION | THREADED, TUBE END, SOCKET WELD END, FLANGE END |
| MANUFACTURER OF THREADS | NPT, BSPP, BSPT, METRIC, JIC, UNF |
| FLOW PATTERN | STRAIGHT |
| BODY SHAPE | HEXAGON |
| 254 SMO VALVES PRESSURE RATING | 1500 PSI, 3000 PSI, 6000 PSI, 10000 PSI, 15,000 PSI, 20000 PSI |
| CRACKING PRESSURE | 0.5 BAR |
| MANUFACTURER OF ORIFICE SIZE | 2 MM TO 40 MM |
| TYPE | POPPET TYPE, SPRING TYPE |
| 254 SMO VALVES MEDIA | HYDRAULIC OIL, AIR, WATER, GAS, STEAM, HOT WATER , COLD WATER , SEA WATER , CHEMICAL |
| MEDIA TEMPERATURE | (-50* C TO 350*C ) RANGE AS PER PRESSURE |
| BODY TYPE | BAR STOCK, FORGED |
| 254 SMO VALVES PACKAGING | WOODEN PALLET, BOX PACKING |
| EQUIVALENT BRANDS | SWAGELOK, PARKER, STAUFF, DK-LOK, HAMLET, OLIVER VALVES, HOKE |
| MANUFACTURER OF MATERIAL | 6MO, SMO 254 |

End Connections |
Pressure Rating at 100°F (37°C) |
Series |
Dimensions |
||
Size |
Type |
B |
A |
||
1/8 in .0 |
Fractional tube fitting |
6000 (413) |
CH4 |
11/16 |
2 .027 (57 .07) |
1/4 in .0 |
2 .043 (61 .07) |
||||
3/8 in .0 |
CH8 |
1 |
2 .075 (69 .09) |
||
1/2 in .0 |
2 .096 (75 .02) |
||||
3/4 in .0 |
5000 (344) |
CH16 |
1 5/8 |
3 .052 (89 .04) |
|
1 in .0 |
4700 (323) |
3 .088 (98 .06) |
|||
6 mm |
Metric tube fitting |
6000 (413) |
CH4 |
11/16 |
2 .043 (61 .07) |
8 mm |
CH8 |
1 |
2 .070 (68 .06) |
||
10 mm |
2 .080 (71 .01) |
||||
12 mm |
2 .096 (75 .02) |
||||
22 mm |
4900 (337) |
CH16 |
1 5/8 |
3 .048 (88 .04) |
|
25 mm |
4600 (316) |
3 .088 (98 .06) |
|||
1/4 in .0 |
Female NPT |
6000 (413) |
CH4 |
11/16 |
2 .013 (54 .01) |
3/8 in .0 |
5300 (365) |
CH8 |
1 |
2 .055 (64 .08) |
|
1/2 in .0 |
4900 (337) |
1 1/16 |
3 .003 (77 .00) |
||
3/4 in .0 |
4600 (316) |
CH16 |
1 5/8 |
3 .023 (82 .00) |
|
1 in .0 |
4400 (303) |
3 .083 (97 .03) |
|||
1/8 in .0 |
Male NPT |
6000 (413) |
CH4 |
11/16 |
1 .079 (45 .05) |
1/4 in .0 |
2 .017 (55 .01) |
||||
3/8 in .0 |
CH8 |
1 |
2 .036 (59 .09) |
||
1/2 in .0 |
2 .073 (69 .03) |
||||
3/4 in .0 |
5000 (344) |
CH16 |
1 5/8 |
3 .029 (83 .06) |
|
1 in .0 |
3 .067 (93 .02) |
||||
1/4 in .0 |
Female ISO➀ |
6000 (413) |
CH4 |
11/16 |
2 .028 (57 .09) |
1/2 in .0 |
5100 (351) |
CH8 |
1 1/16 |
3 .029 (83 .06) |
|
3/4 in .0 |
4800 (330) |
CH16 |
1 5/8 |
3 .055 (90 .02) |
|
1 in .0 |
4400 (303) |
3 .083 (97 .03) |
|||
1/4 in .0 |
Male ISO➀ |
6000 (413) |
CH4 |
11/16 |
2 .017 (55 .01) |
1/2 in .0 |
CH8 |
1 |
2 .073 (69 .03) |
||
3/4 in .0 |
5000 (344) |
CH16 |
1 5/8 |
3 .029 (83 .06) |
|
1 in .0 |
3 .067 (93 .02) |
||||
1/2 in .0 |
Female SAE/MS |
4600 (316) |
CH8 |
1 |
2 .074 (69 .06) |
1/2 in .0 |
Male SAE/MS |
4600 (316) |
2 .048 (63 .00) |
||
1/4 in .0 |
Male VCO fitting |
6000 (413) |
CH4 |
11/16 |
1 .098 (50 .03) |
1/2 in .0 |
CH8 |
1 |
2 .035 (59 .07) |
||
3/4 in .0 |
5000 (344) |
CH16 |
1 5/8 |
2 .090 (73 .07) |
|
1 in .0 |
|||||
1/4 in .0 |
Male VCR fitting |
6000 (413) |
CH4 |
11/16 |
2 .028 (57 .09) |
1/2 in .0 |
4300 (296) |
CH8 |
1 |
2 .073 (69 .03) |
|
3/4 in .0 |
3700 (254) |
CH16 |
1 5/8 |
3 .078 (96 .00) |
|
| 254 SMO VALVES TEMP. °F | 300 | 150 | 600 | 400 | 2500 | 900 | 1500 |
|---|---|---|---|---|---|---|---|
| -20 to 100 °F | 720 | 275 | 1440 | 960 | 6000 | 2160 | 3600 |
| 300 °F | 540 | 205 | 1080 | 720 | 4500 | 1620 | 2700 |
| 200 °F | 600 | 230 | 1200 | 800 | 5000 | 1800 | 3000 |
| 500 °F | 465 | 170 | 930 | 620 | 3880 | 1395 | 2330 |
| 400 °F | 495 | 190 | 995 | 660 | 4140 | 1490 | 2485 |
| 650 °F | 430 | 125 | 860 | 575 | 3580 | 1290 | 2150 |
| 600 °F | 435 | 140 | 875 | 580 | 3640 | 1310 | 2185 |
| 750 °F | 415 | 95 | 830 | 555 | 3460 | 1245 | 2075 |
| 700 °F | 425 | 110 | 850 | 565 | 3540 | 1275 | 2125 |
| 850 °F | 395 | 65 | 790 | 530 | 3300 | 1190 | 1980 |
| 800 °F | 405 | 80 | 805 | 540 | 3360 | 1210 | 2015 |
| 950 °F | 380 | 35 | 765 | 510 | 3180 | 1145 | 1910 |
| 900 °F | 390 | 50 | 780 | 520 | 3240 | 1165 | 1945 |
| 1050 °F | 310 | 20 [1] | 615 | 410 | 2570 | 925 | 1545 |
| 1000 °F | 320 | 20 | 640 | 430 | 2675 | 965 | 1605 |
| 1150 °F | 200 | 20 [1] | 400 | 265 | 1655 | 595 | 995 |
| 1100 °F | 255 | 20 [1] | 515 | 345 | 2145 | 770 | 1285 |
| 1250 °F | 115 | 20 [1] | 225 | 150 | 945 | 340 | 565 |
| 1200 °F | 155 | 20 [1] | 310 | 205 | 1285 | 465 | 770 |
| 1350 °F | 60 | 20 [1] | 125 | 80 | 515 | 185 | 310 |
| 1300 °F | 85 | 20 [1] | 170 | 115 | 715 | 255 | 430 |
| 1450 °F | 35 | 15 [1] | 70 | 45 | 285 | 105 | 170 |
| 1400 °F | 50 | 20 [1] | 95 | 65 | 400 | 145 | 240 |
| 1500 °F | 25 | 10 [1] | 55 | 35 | 230 | 80 | 135 |
Grade |
Mn |
C |
Si |
S |
Cr |
Cu |
Mo |
P |
Ni |
254 SMO VALVES |
1 |
0.002 |
0.008 |
0.001 |
19.05 to 20.05 |
0.05 to 1.00 |
6.00 to 6.05 |
0.003 |
17.05 to 18.05 |
Elongation |
Density |
Tensile Strength |
Melting Point |
Yield Strength |
35 % |
8 g/cm3 |
650 |
1320 to 1390 ℃ |
300 |
| Forged | A182 F44 |
| ASME / ASTM | A351 CK3MCuN |
| Unified Numbering System (UNS) | UNS S31254 |
| European (DIN) Werkstoff number | Wnr. 1.4547 |
| Other designations | Alloy 254 |
| Valves Size | A | B | C |
|---|---|---|---|
| ½” | 65 | 46 | 19 |
| ¾” | 80 | 58 | 23 |
| 1” | 90 | 69 | 27 |
| 1 ¼” | 105 | 75 | 32 |
| 1 ½” | 120 | 85 | 41 |
| 2” | 140 | 98 | 50 |
BSPP |
1/4 |
3/8 |
1/2 |
3/4 |
1 |
1 1/4 |
1 1/2 |
2 |
2 1/2 |
3 |
4 |
A |
45 |
43 |
46 |
50 |
56 |
62 |
66 |
74 |
93 |
98 |
108 |
B |
28 |
30 |
34 |
41 |
47.5 |
55.5 |
67.5 |
81 |
102.5 |
112 |
142.5 |
Weight Kg |
0.1 |
0.14 |
0.13 |
0.19 |
0.24 |
0.35 |
0.53 |
0.75 |
1.69 |
1.98 |
3.69 |
| Belgium, Indonesia, Philippines, Dammam -KSA | Stainless Steel 254 SMO Valves |
| Thailand, France, Europe, Qatar | 254 SMO Valves |
| Malaysia, Germany, Thailand, Czechia | DIN 1.4547 Valves |
| Finland, USA, Bangladesh, Malaysia | 6 Moly Valves |
| Brazil, Saudi Arabia (KSA), Kuwait, South Africa | UNS S31254 Valves |
| Singapore, South Africa, Singapore, Bahrain | SMO WERKSTOFF NR. 1.4547 Valves |
| Nigeria, Australia, UK, Philippines | 6 Moly Alloy foot Valves |
| UAE, Malaysia, Hong Kong, Oman | Alloy 254 SMO non-return Valves |
| Singapore, Italy, Iran, Chile | UNS S31254 retention Valves |
| Malaysia, Turkey, Norway, United Arab Emirates (UAE) | DIN 1.4547 Spring Valves |
| Dubai, Malaysia, Russia, Netherlands | 254 Smo Valves |
| UK, Spain, Mexico, Egypt | 6mo reflux valve |
| UAE, Europe, Malaysia, United Kingdom -UK | Smo 254 One Way Valves |