Industrial Ball Valve Categories & Specifications
J-VALVES manufactures nine categories of industrial ball valves at two plants in Wenzhou, China - trunnion mounted, floating, fully welded, DBB, ultra-low temperature, three-way and four-way, high-temperature, high-pressure and metal-seated ball valves - in sizes from 1/2" to 56" (DN15 to DN1400), pressure classes from 150LB to 2500LB (PN20 to PN420), and temperatures from -196°C to 650°C.
Every category is engineered to a defined standard envelope: design to API 6D, API 608 and ASME B16.34, testing to API 598 and ISO 5208, fire-safe type testing to API 607. Soft seats cover -29°C to 280°C, PEEK seats -60°C to 260°C, and metal-to-metal seats with Stellite hardfacing serve up to 650°C.
Use this page as your selection hub: the category matrix below compares size range, pressure class, temperature range, materials and applicable standards side by side, and each category card links to a dedicated page with drawings, datasheets and order-level specifications.
API 6D / API 607 | Design & fire-safe certified
Class 150-2500 | Pressure class (PN20-PN420)
-196°C to 650°C | Temperature coverage
OEM/ODM
1/2"-56" | Size range (DN15-DN1400)
9 | Ball valve categories
2 | Manufacturing plants in Wenzhou
| Category | Size Range | Pressure Class | Temperature Range | Typical Materials | Standards & Best For |
| Trunnion Mounted Ball Valve | 2"-56" (DN50-DN1500) | Class 150-2500 (PN20-PN420) | -29°C to +425°C; metal seat to 650°C | WCB / A105 / LF2 / F316 / F44; seat RPTFE, PEEK, metal+graphite | API 6D, ASME B16.34, API 607 · High pressure, large bore, pipeline and manifold service |
| Floating Ball Valve | 1/2"-8" (DN15-DN200) | Class 150-2500 (PN20-PN420) | -29°C to +250°C (seat dependent) | WCB / CF8 / CF8M / C95800 bronze; seat PTFE, RPTFE, PPL | API 608, ASME B16.34 · Small-medium bore, tight shutoff, cost-sensitive lines |
| Fully Welded Ball Valve | 2"-56" (DN50-DN1400) | Class 150-2500 (PN20-PN420) | -29°C to +425°C | A105 / LF2 / F52-F65 line pipe steel; 100% RT on welds | API 6D, ASME B16.25 ends · Buried pipelines, district heating, gas transmission |
| DBB Ball Valve | 1/2"-56" (DN15-DN1500) | Class 150-2500 (PN20-PN420) | -29°C to +425°C | WCB / A105 / F316; dual independent seats | API 6D, API 608 · Double block and bleed, instrument and manifold isolation |
| Ultra-low Temperature Ball Valve | 1/2"-56" (DN15-DN1500) | Class 150-600 (PN20-PN100) | -196°C to +180°C | LF2 / CF3M / F316L; extended bonnet, cryogenic seat | ISO 28921-1, API 6D · LNG, liquid nitrogen, oxygen and cryogenic service |
| Three-way & Four-way Ball Valve | 1/2"-36" (DN15-DN800) | Class 150-2500 (PN20-PN420) | -29°C to +250°C | WCB / CF8M; L-port and T-port | API 608, ASME B16.34 · Mixing, diverting and flow distribution |
| High-temperature Ball Valve | 1/2"-56" (DN15-DN1500) | Class 150-2500 | up to 650°C | WCB / WC6 / WC9; metal seat with Stellite hardfacing | ASME B16.34 · Furnace, thermal oil and hot gas service |
| High-pressure Ball Valve | 1/2"~30"(DN15~DN750) | 2500Lb（PN420） | -29°C to +425°C | A105 / F44 / 17-4PH trim; PEEK or metal seat | API 608, ASME B16.34 · Injection, hydraulic and ultra-high pressure process |
| Metal-seated Ball Valve | 1/2"-56" (DN15-DN1500) | Class 150-2500 | -29°C to 650°C | WCB / F316 + Stellite hardfaced seats | API 608, API 607 · Abrasive, high-temperature and sever service |
| Your Service | Recommended Category | Why |
| Oil & gas gathering, pipelines | Trunnion Mounted | Trunnion support keeps seat loading stable at high differential pressure; full API 6D compliance |
| Buried gas / heating transmission lines | Fully Welded | Welded body eliminates flange leak paths; 100% radiographic testing on welds |
| Small bore, tight shutoff, frequent cycling | Floating | Ball seats against downstream seat under line pressure - bubble-tight shutoff at low cost |
| LNG liquefaction, carriers, regas | Ultra-low Temperature | Extended bonnet keeps packing above -29°C; -196°C tested in our own laboratory |
| Instrument isolation and venting | DBB | Two independent sealing surfaces plus bleed port verify zero downstream pressure |
| Mixing or diverting two flow paths | Three-way / Four-way | L-port and T-port designs switch flow direction with a quarter turn |
| Furnace outlets, thermal oil >300°C | High-temperature / Metal-seated | Metal-to-metal seats with Stellite hardfacing survive beyond soft-seat limits |
| Seat / Seal Material | Service Temperature | Typical Application |
| PTFE | -29°C to +180°C | General service, water, oil, air |
| RPTFE (reinforced) | -29°C to +200°C | Higher pressure general service |
| PPL | -29°C to +280°C | Steam-adjacent and hot oil lines |
| PEEK | -60°C to +260°C | High pressure injection and process |
| Metal seat + flexible graphite | -29°C to +650°C | High temperature, abrasive, sever service |
| Cryogenic seat + extended bonnet | -196°C to +180°C | LNG, liquid nitrogen, cryogenic service |
Frequently Asked Questions About J-VALVES Ball Valves
Q1: What size range and pressure class do J-VALVES ball valves cover?
A: J-VALVES ball valves cover nominal sizes from 1/2 inch to 56 inch (DN15 to DN1400) and pressure classes from ASME Class 150 to 2500 (PN20 to PN420). Forged high-pressure trunnion valves reach Class 2500, and fully welded line valves are available up to 56 inch for pipeline service.
Q2: Which ball valve type should I choose, floating or trunnion mounted?
Q3: What temperature range can J-VALVES ball valve seats handle?
Q4: What standards do J-VALVES ball valves comply with?
Q5: Can I get drawings and datasheets before ordering?
Q6: Do you supply actuated ball valves?
