Oil, gas, chemical and power plant buyers often struggle with ball valve selection: whether to adopt 2-piece floating ball valve for small bore low pressure pipeline or trunnion mounted ball valve for high pressure cryogenic severe service. Based on J-VALVES 16 years industrial valve manufacturing & exporting experience, we compare two mainstream carbon steel ball valves from structure, pressure rating, temperature, cost and real project cases, providing clear selection standards for global EPC buyers.
I. Comparison Chart: A105 2PC Floating Ball Valve VS Trunnion Mounted Ball Valve
| Comparison Item | A105 2PC Floating Ball Valve | A105 Trunnion Mounted Ball Valve |
Ball Support | Single stem floating ball | Double top & bottom trunnion fixed ball |
Pressure Class | Class150 ~ Class600 medium-low pressure | Class150 ~ Class2500 full range, ultra-high pressure available |
Working Temperature | -29℃ ~ 200℃, optional simple cryogenic kit down to -46℃ | Standard high temp service, extended stem modified for -196℃ LNG ultra-low temp |
Recommended Size | DN15 ~ DN200, DN50 best cost performance | DN50 & above, priority for large bore & high pressure |
Typical Application | City gas branch pipeline, water treatment, general chemical piping | Natural gas trunk line, LNG storage tank, coal chemical high pressure syngas, hydrogen refinery plant |
Purchase Cost | Lower price, stock items fast delivery | Longer service life under harsh service, lower long-term maintenance cost |
II. Industry Specific Selection Recommendation (J-VALVES Real Project Reference)
2.1 Municipal City Gas & Medium-Small Water Treatment Plant
Working pressure Class150~Class300, DN50 branch pipeline prefer J-VALVES A105 2PC floating ball valve, in stock & cost-effective, bulk order adopted by Malaysia, Vietnam gas network projects.
2.2 Natural Gas Long-distance Trunk Line & Coal-to-Hydrogen High Pressure Plant
Pressure Class900 and above, high pressure syngas medium, DBB trunnion ball valve mandatory. Mass supply for Xinjiang coal chemical plant & Middle East oilfield long-distance pipelines.
2.3 LNG Cryogenic Storage Tank & Low Temp Chemical Pipeline
Medium temperature below -46℃, customized heat insulated extended stem cryogenic trunnion ball valve required. J-VALVES delivered mature solutions for Australia LNG project and domestic liquid oxygen/nitrogen plants.
III. Why Global EPC Buyers Choose J-VALVES One-stop Ball Valve Supplier
3.1 Dual Production Line Covers Floating & Trunnion Ball Valve Simultaneously
Few manufacturers in the industry mass produce 2PC floating ball valve, standard trunnion ball valve and cryogenic trunnion valve in one factory. All high/low pressure, normal/cryogenic valves can be delivered in one shipment, cutting communication cost from multiple vendors.
3.2 Integrated A105 Forging Supply Chain to Control Cost
Unified bulk procurement of A105N forged blanks for both floating and trunnion valve bodies, raw material cost reduced by 8%-15% vs competitors with equal quality.
3.3 Unified Full Set Certificates Simplify Export Project Documentation
All ball valves equipped with API 6D, CE, fire safe & anti-static type approval, standardized MTR, NDT and hydro test report templates, fast document submission for overseas EPC projects.
3.4 Global After-sales Service Network
Cooperative service stations in Southeast Asia, Middle East and Australia, spare parts replacement solution within 48 hours for sealing & actuator failure, zero major after-sales complaints over years of export business.
IV. Final Selection Summary
Medium-low pressure, small bore municipal pipeline with limited budget: Choose J-VALVES DN50 A105 2PC floating ball valve;
Ultra-high pressure, cryogenic service, long-distance trunk line & large LNG chemical plant: Choose J-VALVES A105 trunnion ball valve, custom extended stem cryogenic trunnion valve for sub-zero temperature working condition.
