Welded end fully welded ball valve is a type of ball valve that uses welding, flange, or threaded connections, with a nominal diameter range of NPS 2" to 48" (DN50 to DN1200) and a pressure rating of Class 150 to 2500. It is suitable for temperature ranges from -38°C to 380°C, with body materials including A105, LF2, F304, F316, etc., and a sealing form made of carbon fiber-reinforced PTFE material.
The valve features an integrally forged steel welded body with welding grooves subjected to liquid penetrant testing. Carbon steel components undergo electroless nickel plating. It is equipped with a mirror-polished stainless steel ball, preloaded spring seat rings, and a blowout-proof stem structure, supporting manual, worm gear, electric, or pneumatic operation. The double-seat design allows for independent fluid cutoff, providing double block and bleed functionality. The single-weld structure optimizes manufacturing processes and sealing reliability. The product complies with design standards such as API 608 and API 6D, with connection ends conforming to ASME B16.5 specifications.
Specification
Size Range And Pressure Class
Size from 2" to 48" (DN50-DN1200)
Pressure from 150LBS to 2500LBS (PN16-PN420)
Design Standards
Design / Manufacture as per the standards
API 6D; ASME B16.34; DIN 3357; EN 13709; GB/T12237; BS5351
Face to Face Length (Dimension) as per the standards
ASME B16.10; EN 558-1 Gr. 14 (DIN 3202-F4); DIN 3202-F5; DIN 3202-F7; BS5163
Flanged Dimension according to the standards
ASME B16.5; EN 1092-1; BS4504; DIN2501;
Flanged to ASME B16.5 (2" ~ 24") and ASME B16.47 Series A / B (26" and above) Clamp / Hub ends on request.
Testing according to the standards
API 598; API 6D; EN 12266-1; EN 1074-1; ISO5208
Actuator Option
Piston actuators (pneumatic, gas-over-oil and electro-hydraulic);
Electric actuators with mechanical gear (or without gear);
Manual actuators with mechanical gear;
Levers, handwheels
Construction Materials
Carbon Steel
A105, C22.8/ P250GH (1.0460/1.0432)
Low Temperature Carbon Steel (LTCS):
ASTM A350 LF2, TStE355 / P355QH1 (1.0571/1.0566)
Alloy Steel:
ASTM A350 LF1/LF3/LF5/LF6/LF9/LF787
High Temperature Steel (Chrome Moly)/Alloy Steel:
ASTM A182 F1, 15Mo3 16Mo3 (1.5415)
ASTM A182 F11, 13 CrMo 4 4/ 13CrMo4-5 (1.7335)
ASTM A182 F22, 10CrMo 9 10 / 11CrMo9-10 (1.7383/1.7380)
ASTM A182 F91, X10CrMoVNb9-1 (1.4903)
Austenitic Stainless Steel/Alloy Steel:
ASTM A182 F304 X5CrNi1810/ X5CrNi18-10 (1.4301)
ASTM A182 F304L X2 CrNi 19 11 (1.4306)
ASTM A182 F316 X5CrNiMo 17 12 2 / X5CrNiMo17-12-2 (1.4401)
ASTM A182 F316L X2 CrNiMo 17 13 2 / X2CrNiMo17-12-2 (1.4404)
ASTM A182 F316 Ti X6 CrNiMoTi 17 12 2 / X6CrNiMoTi17-12-2 (1.4571)
ASTM A182 F321 X6 CrNiTi 18 10 /X6CrNiTi18-10 (1.4541)
ASTM A182 F347 X6CrNiNb1810/ X6CrNiTi18-10C (1.4550)
ASTM A182 F44 (6MO) (1.4547)
ASTM A182 F20*(ALLOY 20#)
Ferritic-Austenitic / Duplex / Super Duplex Stainless Steel:
ASTM A182 F51, X2 CrNiMoN 22 5 3 / X2CrNiMoN22-5-3 (1.4462)
ASTM A182 F52, (1.4460)
ASTM A182 F53, X2CrNiMoCuN 25.6.3 (1.4410)
ASTM A182 F55, X2CrNiMoCuWN 25.7.4 (1.4501)
ASTM A182 F60, (1.4462)
Other materials
Alloy 20 ASTM B462 / UNS N08020
Monel 400 / UNS N04400 ASTM B564-N04400 / A494 M35-1 NiCu30Fe (2.4360)
Nickel Alloy 904L / UNS N08904 X1NiCrMoCu25.20.5 (1.4539)
Inconel 625 /UNS N06625 /ASTM B564-N06625 /ASTM A494-CW6MC
NiCr22Mo9Nb (2.4856)
Inconel 825 /UNS N08825 /ASTM B564-N08825 /A494 CU5MCuC (2.4858)
NiCr21Mo (2.4858)
Features:
The fully welded ball valve ensures no external leakage.
The ball is precision-machined under the monitoring of advanced computer inspection equipment, guaranteeing high machining accuracy.
Since the valve body material matches the pipeline material, there is no stress imbalance, and it resists deformation caused by earthquakes or ground traffic. The pipeline is also resistant to aging.
The sealing ring is made of RPTFE material containing 25% carbon, ensuring 100% leak-proof performance (0% leakage).
The direct burial welded ball valve can be buried underground without constructing large valve chambers; only small, shallow wells are needed on the ground, significantly reducing construction costs and project time.
The valve body length and stem height can be adjusted according to pipeline construction and design requirements.
The ball is machined with extremely high precision, ensuring smooth and effortless operation without any interference.
Made from high-quality raw materials, it can withstand pressures above PN25.
Compared to similar products in the industry, the valve body is more compact and aesthetically pleasing.
Under normal operating conditions, the service life exceeds 20 years.
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