Bolted-bonnet valves with a selected disc, seat and flow direction
We supply cast steel globe valves for wholesale industrial valve schedules. The handwheel and stem move a disc onto its seat for shutoff or the accepted regulating duty. Our offer identifies the cast body grade, trim, end connection and pressure-temperature conditions as one selected valve.
| Valve construction | Cast body, bolted bonnet and stem-operated disc |
|---|---|
| Body selection | ASTM A216 WCB; separately identified stainless selections |
| Trim selection | Specified disc, seat and stem material arrangement |
| End connections | Selected RF, RTJ or butt-weld connection |
| Pressure-temperature basis | Actual selected body material, class and service temperature |
| Shown dimension series | Class 600 selected RF/BW lengths from our catalog |
Match the connection type as well as the nominal size when allowing space for the valve body.
| NPS (in.) | DN | RF/BW length L (mm) |
|---|---|---|
| 1/2 | 15 | 165 |
| 1 | 25 | 216 |
| 2 | 50 | 292 |
| 3 | 80 | 356 |
| 4 | 100 | 432 |
| 6 | 150 | 559 |
| 8 | 200 | 660 |
| 12 | 300 | 838 |
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Selected Class 600 RF/BW L dimensions from our cast globe valve catalog, page 4. RTJ face spacing and full open-stem height follow the selected connection drawing; the quoted model retains its adopted pressure-temperature conditions.
The trim description identifies the contact materials and disc profile. These details carry the actual shutoff and regulating requirements, including any specified leakage acceptance.
The selected valve drawing and body marking establish the installation direction. A different disc or actuator arrangement can change the intended pressure direction, so the released valve item retains its own arrow and instructions.
The service rating follows the actual body material, class and temperature. Required shell and seat-test records retain the test conditions and acceptance criteria for that valve item.
The body L dimension locates the flange faces; the open-stem and handwheel dimensions establish access above them. The installed layout retains both references beside nearby piping or structural steel.
Maintenance access includes the space needed to lift the bonnet, stem and disc group for the selected construction. The lifting path is reviewed separately from ordinary handwheel operation.
A butt-weld valve uses the accepted bevel and welding procedure for its body and adjoining pipe. The fabrication release identifies the valve position and the manufacturer’s prescribed protection of seating and packing during welding.
The selected valve item records whether the operating duty is isolation or an accepted regulation point. Flow and differential-pressure conditions are retained with the trim selection.
A replacement compares the original face spacing, connection and full operator envelope. Its service conditions and trim identity are reviewed alongside those physical dimensions.
The inspection record retains the selected trim materials and contact condition. A specified seat-leakage test states its medium, pressure conditions and acceptance result.
The prescribed operating check follows the stem through its travel. Gland, handwheel and stem condition are reviewed with the selected packing arrangement.
Face spacing, end preparation and material/class identification are checked against the released valve item. The same identity stays with the required pressure-test and material records.
Cradle supports carry the cast body. The handwheel, exposed stem and gland remain clear of restraint pressure and crate contact.
End protectors keep the flange faces or weld bevels clear of loose packing debris. Separate gaskets, bolting and replacement trim remain identified by the valve reference.
Our offer lists body grade, trim, class and end connection, followed by required records and any additional equipment. Quantities, packing and shipment terms apply to those defined items.
The line size establishes the connection family. A regulating selection also uses the required flow, differential pressure and fluid conditions to assess the valve capacity and trim. The accepted valve data retains both hydraulic and connection information.
The selected model’s arrow and instructions define its direction. Disc profile and actuator arrangement can change the intended pressure direction, and the order retains that exact configuration.
The purchase specification identifies the applicable valve test and leakage acceptance for the selected seat. The offered trim and test record use that same medium, pressure condition and acceptance basis.
The accepted regulating range is reviewed against the actual flow and pressure drop. Where the duty requires a small effective opening or severe pressure reduction, the proposed disc or control-valve trim is selected for those conditions.
The installation also retains full stem travel, access around the wheel and the bonnet-removal path. The selected open-position drawing provides the complete operator envelope.
The valve manufacturer, model, size and trim reference identify the spare. The material and service-temperature requirements remain linked to that original assembly, including any accepted revision.
Other items in the same product category.
Send nominal sizes, end connections, body and trim requirements, operating temperature and pressure conditions. Add flow and differential pressure for regulating duty, plus quantities, records and destination. We return the selected valve data and an itemized supply offer.