Fisher® Turbine Bypass Sparger
Fisher® TBX sparger is a back pressure device that is an integral part of a well designed turbine bypass system when discharging to either water cooled or air cooled condensers. The design is critically important to minimize system noise and optimize turbine efficiency.
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Total Steam Control—Combines pressure and temperature control in a single valve.
Full Pressure Drop Capability—Rugged cage-guided design enables handling of full pressure drop of main steam.
Noise Attenuation—Whisper III and WhisperFlo trims help to attenuate the noise by 30 to 40 dBA, respectfully.
High Temperature Capability with Standard Class V Shutoff—Use of the patented Fisher Bore Seal trim gives capability of Class V shutoff as a standard up to 593°C (1100°F). This unique balanced trim is field-proven.
Forged Valve Body—FEA designed valve body can handle the most demanding applications without thermal stress problems.
Flow Up Angle—Permits vertical stem orientation for ease of maintenance in most applications.
Thermally Compensated Trim—The cage is case-hardened for maximum life and is allowed to grow during thermally induced excursions. The plug is continuously guided and employs cobalt-based overlays for guide bands and tight metal-to-metal shutoff against the seat.
Easy Maintenance Seat Ring—No bolting or gaskets used in the flow stream. Welded design provides Class V shutoff and long life. Deep Alloy 6 overlay can be refinished multiple times to maintain tight shutoff.
Spiral-Wound Gaskets for Excellent Bonnet Sealing Under All Service Conditions—Premium gaskets provided with N06600 windings and graphite filler material.
Precise Spraywater Injection—CFD designed spray manifold determines water injection point and insertion depth to maximize mixing and quick vaporization.
High Turndown—Standard trim control rangeability is 50:1. Special construction can provide up to 75:1 turndown.
Quick Stroking Actuation—High performance pneumatic piston actuators with FIELDVUETM digital valve controllers can achieve full stroke in less than 2 seconds while still maintaining highly accurate step response. Optimized digital valve controllers are available when high stroke speeds are required. Contact your Emerson Process Management sales office for assistance.
Performance Diagnostics—With the self-diagnostic capability, questions can be answered about a valve's performance, without pulling the valve from the line. The present valve/actuator signature (seat load, friction, etc.) can be compared against previously stored signatures to discover performance changes before they cause process control problems. |
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