Stainless Steel 347H Instrumentation Valves are known for their unique features, making them stand out from other valves. One of the major factors contributing to its uniqueness is its properties and characteristics. This grade of stainless steel, an upgrade of grade 347, contains a higher carbon content that enhances its high-temperature properties. The tantalum and chromium additions also stabilize the 347H Alloy Instrumentation Valves, providing high-stress and creep-resistant features.
Stainless Steel 347, also known as UNS S34700 austenitic stainless steel, is a niobium-based material with excellent resistance to general and pitting corrosion. It also offers great resistance to intergranular corrosion in a temperature range of 427 to 816 degrees C of chromium carbide precipitation. The chemical composition of the Grade 347 Instrumentation Valves includes C: 0.08 max, Mn: 0.08 max, Si: 1.0 max, P: 0.045 max, S: 0.030 max, Cr: 17.00 – 19.00, N: 0.10 max, Ni: 9.00 – 12.00, Ti: 0.70 max. Adding niobium in these austenitic stainless-steel valves helps resist carbide precipitation and intergranular corrosion.
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Stainless Steel 347 and 347H Instrumentation Valves find their application in industries requiring high oxidation resistance and creep strength at 1600 degrees F temperature. They are also known for their low-temperature toughness, which makes them ideal for high-temperature applications similar to Stainless Steel 904L Valves. These valves are widely used in the water heat recovery department, food processing unit, pharmaceutical equipment, petroleum, and textile industries.
Kalp Industries is a leading manufacturer, supplier, and trader of superior quality SS 347/347H Instrumentation Valves. These valves are mechanical tools that regulate or control the pressure and flow of fluid into a system. In chemical processing units, these valves are highly useful in maintaining the pressure and flow of fluid. Our valves are available in various sizes, pressure ratings, and end connections to meet the specific needs of our customers. Contact us today to learn more about our other products, including Stainless Steel 321 Instrumentation Valves, Stainless Steel 304 Welded Tubes, etc.
Specifications | ASTM A351 / ASME SA351 |
Size | 1/16″ to 1″ (3mm to 25.4mm) |
Flow Pattern | Straight/ Angle |
Instrument valves Working pressure | 3000 psig (206 bar) |
Temperature Rating | PTFE 450F,(232C)/ Grafoil 700 F(371C) |
Forms | Ball Valve, Check Valve, Double Block & Bleed Valve, Gauge Valve, Manifold Valve, Mono Flange Valve, Needle Valve, Plug Valve, Pressure Relief Valve, Vent & Bleeder Valve |
End Connection | Male and Female NPT, BSPT, Socket Weld (SW) or Dual Ferrule Tube Connections, Male to Female |
Instrument Valves Applicable Standard |
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Approvals |
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We also stock & supply |
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Uses & application |
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Low Pressure Valves Connection |
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STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
SS 347H | 1.4961 | S34709 | SUS 347H | – | X6CrNiNb18-12 |
Temp. °F | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
---|---|---|---|---|---|---|---|
-20 to 100 | 275 | 720 | 960 | 1440 | 2160 | 3600 | 6000 |
200 | 230 | 600 | 800 | 1200 | 1800 | 3000 | 5000 |
300 | 205 | 540 | 720 | 1080 | 1620 | 2700 | 4500 |
400 | 190 | 495 | 660 | 995 | 1490 | 2485 | 4140 |
500 | 170 | 465 | 620 | 930 | 1395 | 2330 | 3880 |
600 | 140 | 435 | 580 | 875 | 1310 | 2185 | 3640 |
650 | 125 | 430 | 575 | 860 | 1290 | 2150 | 3580 |
700 | 110 | 425 | 565 | 850 | 1275 | 2125 | 3540 |
750 | 95 | 415 | 555 | 830 | 1245 | 2075 | 3460 |
800 | 80 | 405 | 540 | 805 | 1210 | 2015 | 3360 |
850 | 65 | 395 | 530 | 790 | 1190 | 1980 | 3300 |
900 | 50 | 390 | 520 | 780 | 1165 | 1945 | 3240 |
950 | 35 | 380 | 510 | 765 | 1145 | 1910 | 3180 |
1000 | 20 | 320 | 430 | 640 | 965 | 1605 | 2675 |
1050 | 20 [1] | 310 | 410 | 615 | 925 | 1545 | 2570 |
1100 | 20 [1] | 255 | 345 | 515 | 770 | 1285 | 2145 |
1150 | 20 [1] | 200 | 265 | 400 | 595 | 995 | 1655 |
1200 | 20 [1] | 155 | 205 | 310 | 465 | 770 | 1285 |
1250 | 20 [1] | 115 | 150 | 225 | 340 | 565 | 945 |
1300 | 20 [1] | 85 | 115 | 170 | 255 | 430 | 715 |
1350 | 20 [1] | 60 | 80 | 125 | 185 | 310 | 515 |
1400 | 20 [1] | 50 | 65 | 95 | 145 | 240 | 400 |
1450 | 15 [1] | 35 | 45 | 70 | 105 | 170 | 285 |
1500 | 10 [1] | 25 | 35 | 55 | 80 | 135 | 230 |
Size | L | a | b | W | H |
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1/8″ | 56 | 28 | 28 | 60 | 80 |
¼” | 56 | 28 | 28 | 60 | 80 |
3/8” | 56 | 28 | 28 | 60 | 80 |
½” | 58 | 28 | 28 | 60 | 81 |
¾” | 62 | 35 | 35 | 60 | 85 |
1” | 70 | 45 | 45 | 70 | 100 |
Port Size (BSP) | Media Pressure | Media Temperature | CV |
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1/8″ | 0 to 408 Bar | -20°C to 230°C | |
¼” | 0 to 408 Bar | -20°C to 230°C | 0.4 |
3/8” | 0 to 408 Bar | -20°C to 230°C | 0.4 |
½” | 0 to 408 Bar | -20°C to 230°C | 0.6 |
¾” | 0 to 408 Bar | -20°C to 230°C | 1.6 |
1” | 0 to 408 Bar | -20°C to 230°C | 2.5 |
Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 10xC – 1.10 | 9.00 – 13.00 | 62.74 min |
SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 8xC – 1.10 | 9.0 -13.0 | 63.72 min |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
We Serve Application Industry
Fastener applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
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