Worm gear forged steel A105 pipeline fixed ball valves are used where a trunnion-supported (fixed) ball construction is specified for industrial pipeline service. A105 is a common carbon steel forging grade for valve bodies and related pressure-retaining parts. Jiangsu Tekron Flow Control Valve Co., Ltd. supplies this product under the Tekron / Trekre brand series according to medium, temperature, pressure, size and drive requirements.
Worm gear operation
A worm-gear operator is commonly used to open and close larger or higher-torque ball valves with controlled handwheel effort. The gear set transmits rotation to the stem so that the ball turns between open and closed positions. Exact torque, gear ratio and handwheel orientation depend on valve size and order specification.
Fixed (trunnion-supported) ball construction
This page describes a fixed / trunnion-mounted ball valve. The ball is supported by the stem/trunnion structure rather than relying on free ball displacement for sealing. Seat construction and sealing behavior depend on the specific valve design and order specification. This is different from a free-ball-seat design, in which the ball may shift slightly under line pressure toward the downstream seat.
Sealing performance
Sealing performance should be confirmed according to the valve design, applicable test standard and order requirements. Absolute leak-tight marketing claims are not used here unless a test standard and acceptance level are stated in the technical documents.
Typical selection notes
Confirm nominal size, pressure class, end connection, seat/seal materials, packing, worm-gear ratio and any accessories against the process data sheet. Jiangsu Tekron Flow Control Valve Co., Ltd. can support selection based on medium, temperature, pressure and operation preference. Final configuration shall follow the technical agreement, nameplate and test documents.
