Zeron Fastners
Industrial Valves & FastenersJacketed Ball Valves
Jacketed Ball Valves are specially fabricated heated valves featuring an external secondary welded metallic heating jacket that surrounds the primary pressure vessel. By continuously circulating steam, hot thermal oil, or heated water through the jacket chamber, these valves maintain media temperatures above solidification thresholds, preventing liquid asphalt, molten sulfur, heavy bitumen, resins, and polymers from cooling, seizing, or freezing within the valve internals.
Zeron Fastners manufactures Full Body Jacketed and Partial Body Jacketed Ball Valves conforming to ASME B16.34 and API 6D. Available with oversized connection flanges to allow standard pipeline bolting clearances without jacket interference. Built in Carbon Steel, Stainless Steel (304/316/316L), and Hastelloy with metal-to-metal or cavity-filled high-temperature PTFE/PEEK seats.
Technical Specifications
| Specification Feature | Details & Standard Compliance |
|---|---|
| Design Standards | ASME B16.34, API 6D, ISO 17292, BS 5351 |
| Size Range | 1/2" to 12" (DN15 - DN300) with Oversized End Flanges |
| Pressure Ratings | Class 150#, Class 300#, Class 600# (PN20 to PN100) |
| Jacket Heating Media | Saturated Steam, Thermal Oil, Hot Water (Rated to 150 PSI Jacket Pressure) |
| Body Materials | ASTM A216 WCB, A351 CF8M, CF3M, Hastelloy C276, Alloy 20 |
| Jacket Materials | Fabricated Carbon Steel / Stainless Steel 304/316 Seamless Pipe Jacket |
| Seat Construction | Cavity Filled Virgin PTFE, Carbon Filled PTFE, PEEK, Metal-to-Metal Stellite |
| Jacket Connections | 1/2" or 3/4" Screwed NPT / Socket Weld / Flanged Flange Inlets & Outlets |
| Testing Standard | API 598 (Dual Hydrostatic Testing of Core Body and Outer Jacket) |
Heating Jacket Configurations
| Type & Model | Key Features & Operating Applications |
|---|---|
| Full Body Jacketed Ball Valves | Heating jacket extends from flange to flange, covering the entire body and neck cavity. |
| Partial Body Jacketed Valves | Jacket covers the central body bowl, preserving standard face-to-face dimensions. |
| Cavity Filled Jacketed Valves | Eliminates empty body dead zones where viscous fluids could solidify and lock the ball. |
| High Temperature Hot Oil Valves | Grafoil live-loaded stem seals engineered for continuous +350°C thermal oil loop service. |
