253B Exhaust Throttle Valves
Overview
The 253B Exhaust Throttle Valve regulates the removal of gas from a processing system. Its flapper is positioned to modulate gas flow, thereby controlling process pressure. The 253 has a patented non-linear actuator placed between the flapper shaft and the motor drive shaft in order to generate a linear valve transfer characteristic and provide smooth linear pressure control.
Products
| Compare | Description | Drawings, CAD & Specs | Availability | Price | |||
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253B-1-40-1 Exhaust Throttle Valve, 1.27 in. ID, NW40 ISO-KF, Flapper O-ring |
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$2,100 |
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253B-1-40-2 Exhaust Throttle Valve, 1.27 in. ID, NW40 ISO-KF |
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$2,100 |
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253B-2-50-1 Exhaust Throttle Valve, 1.888 in. ID, NW50 ISO-KF, Flapper O-ring |
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$2,389 |
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253B-2-50-2 Exhaust Throttle Valve, 2.00 in. ID, NW50 ISO-KF |
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$2,389 |
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Exhaust Throttle Valve, 0.779 in. ID, 2.75 in. CF Flange, Flapper O-ring
$2,442
14 Weeks
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253B-20-2CF-1 Exhaust Throttle Valve, 0.779 in. ID, 2.75 in. CF Flange, Flapper O-ring |
14 Weeks
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$2,442 |
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253B-20-2CF-2 Exhaust Throttle Valve, 1.27 in. ID, 2.75 in. CF Flange |
14 Weeks
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$2,442 |
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253B-20-40-1 Exhaust Throttle Valve, 0.779 in. ID, NW40 ISO-KF, Flapper O-ring |
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$2,100 |
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253B-20-40-2 Exhaust Throttle Valve, 0.779 in. ID, NW40 ISO-KF |
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$2,100 |
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253B-3-80-2 Exhaust Throttle Valve, 3.00 in. ID, NW80 ISO-MF | $2,520 |
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253B-4-100-2 Exhaust Throttle Valve, 3.875 in. ID, NW100 ISO-MF | $3,124 |
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253B-60-63-2 Exhaust Throttle Valve, 2.362 in. ID, NW63 ISO-MF | $2,468 |
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Specifications
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Type253 Exhaust Throttle Valve
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Valve TypeButterfly/Throttle Valve
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Operating TemperatureStandard: 0 - 100°C
Optional: 0 - 150°C -
Valve Motor Ambient Operating Temperature-20 to 40°C
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Exposed Materials316L S.S., Viton®
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External Leak Rate1x10-8 scc/sec He (at shaft seal)
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Closed Leakage<10-7 (Torr l/s)
(valves with a flapper o-ring) -
Valve Speed1.7 sec (open to close)
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Drive Output TorqueStandard speed: 600 in-oz
High-speed: 170 in-oz
(with 651 Controller) -
Resolution1/12,000
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DriveDirect gear drive
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Differential Pressure Across Valve1 atm. (15 psig) max
Resources
Manuals
- 253B Throttling Valve Manual (0, PDF)
Ultra-High Velocity