Fisher Baumann 81000 Low Flow Valveis part of the sliding stem valve rangethat is designed especially for throttling of liquid or gaseous media, particularly where wide flow variations are encountered.
Fisher Baumann 81000 Low Flow Valveis part of the sliding stem valve rangethat is designed especially for throttling of liquid or gaseous media, particularly where wide flow variations are encountered.
The Baumann 81000 is packless in design and is therefore suitable for applications where leakage prone stem packings not tolerated.
The 81000 uses a nearly frictionless mechanical force-amplifying mechanism to reduce the travel of the pneumatic or electric actuators. This allows the closure diaphragm to move precisely against the valve orifice to throttle or stop the passing fluid.
See how Fisher Control Valves provide safe, efficient and intuitive flow control.
| Category | Mechanical |
|---|
| Sizes | NPS 1/4, 1/2 |
| Connections | NPT threaded or proprietary fittings |
| Body Material | 316 SS |
| Valve Body Rating | 275 psig CWP |
| Trim Material | 316 SS or N10276 Nickel Alloy |
| Trim Characteristic | Modified Equal % |
| Seat Leakage | ANSI/FCI 70-2 Class IV |
| Cv Ratings | 0.01 to 0.7 |
| Bonnet Type | Standard bolted |
| Packing Material | None |
| Temperature Range | -29ºC to 177ºC (-20ºF to 350ºF) |
| Key No | Description | Material |
| 1 | Valve Body | S31600 SST, standard / ASTM B575 N06022, optional |
| 2 | Bonnet Yoke | S31600 SST |
| 3 | Piston Subassembly | S30300 SST and FKM (Fluorocarbon) |
| 4 | Bearing Cartridge Subassembly | Stainless Steel and PTFE (Polytetrafluoroethylene) |
| 5 | Closure Diaphragm | S31600 SST, standard / N10276 Nickel Alloy, optiona |
| 6 | Seat Spring | ASTM B575 N06022 |
| 7 | Wave Spring | S17700 SST |
| 8 | Bonnet | ASTM A743 CF8 |
| 9 | Drive Nut, Yoke | S30400 SST |
| 10 | Plunger | ASTM A276 S31600 Condition A |
| 13 | Allen head Bolts | Stainless Steel (18-8 SST) |
| 14 | O-Ring, Plunger | FKM (Fluorocarbon) |
| 15 | O-Ring | PTFE, FDA 21 CFR 177 (Polytetrafluoroethylene) |
| 27 | Jam Nut | Stainless Steel (18-8 SST) |
| 49 | O-Ring | FKM (Fluorocarbon) |
| 58 | Travel Indicator Disk | ASTM A240 S30400 |
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