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Fisher® TBX Steam Conditioning Valve

Fisher® TBX Steam Conditioning Valve
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Fisher® TBX Steam Conditioning Valve - 1

Instruction Manual Fisherr TBX Steam Conditioning Valve Contents Figure 1. Fisher TBX Steam Conditioning Valve Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Educational Services . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Removal of Valve Bonnet and Trim . . . . . . . . . . . . . 7 Nozzle Maintenance and Replacement . . . . . . . . . . 9 Valve Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Introduction Scope of Manual This instruction manual includes installation, maintenance, and operation information for the Fisher TBX control valve. Refer to separate instruction manuals for instructions covering the actuator and accessories. Do not install, operate, or maintain a TBX valve without being fully trained and qualified in valve, actuator, and accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is important to carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If you have any questions about these instructions, contact your Emerson Process Management sales office before proceeding. Description The TBX Steam Conditioning Valve (see figure 1) provides a convenient and efficient way to reduce steam pressure and temperature within a single device. Typical installations include steam backpressure control, turbine bypass, boiler start-up service, auxiliary steam letdown for drying rolls, kettles, equipment drives, plant heating, and other loads requiring dependable and accurate control of steam pressure and temperature.

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Fisher® TBX Steam Conditioning Valve - 2

Instruction Manual Table 1. Specifications for Standard Designs (Physical Specifications) End Connection Sizes(1) Valve Inlet: NPS 4 through NPS 24 Valve Outlet: NPS 8 through NPS 36 End Connection Types J ASME Buttweld (all sizes) J ASME Raised Face Flanges (all sizes) Valve Configuration Angle Pattern (flow up or flow down) Valve Body Ratings(2) ASME: CL150 - CL2500 Bonnet Type Bolted Shutoff Classifications per ANSI/FCI 70-2 and IEC 60534-4 Standard: Class V Optional: Class IV Flow Characteristics(3) Whisper Trim™ III: Linear WhisperFlo™ (flow up only): Linear Flow Direction Whisper Trim...

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Fisher® TBX Steam Conditioning Valve - 3

Instruction Manual The TBX Steam Conditioning Valve (figure 1) is designed to handle the most severe applications in today's cycling power plants as well as provide precise pressure and temperature control for process applications. The TBX incorporates over 20 years of steam conditioning experience and product development. The valve body is designed with the latest finite element analysis (FEA) and computational fluid dynamics (CFD) tools to optimize performance and reliability for demanding steam systems. The TBX is a flow up or flow down design providing the ultimate combination of...

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Fisher® TBX Steam Conditioning Valve - 4

Instruction Manual Installation WARNING Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal injury. Personal injury or equipment damage caused by sudden release of pressure may result if the TBX valve is installed where service conditions could exceed the limits of the pressure rating noted on the nameplate. To avoid such injury or damage, provide a relief valve for over pressure protection as required by government or accepted industry codes and good engineering practices. Check with your process or safety engineer for any...

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Fisher® TBX Steam Conditioning Valve - 5

4. Flanged Connections–Grease the flange connection bolts with a high temperature thread lubricant. Install flange gaskets and connection bolts per accepted practices and tighten securely. 5. Welded Connections–Welding procedures should be in accordance with the applicable codes and the base materials. For preheat, welding electrodes, and postweld heat treatment, refer to the applicable codes and practices applicable for the specific facility. Materials are specified on the customer specification sheet. Emerson Process Management recommends the valve be disassembled for welding, however if...

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Fisher® TBX Steam Conditioning Valve - 6

Instruction Manual 10. If foreign debris has been introduced into the valve or upstream piping during installation, it must be removed prior to using the valve for the first time. A Blowout or Blowdown tool can be purchased to match the TBX valve and facilitate piping blowdown without removal of the valve from the line. Contact your Emerson Process Management sales office for pricing and availability of fixtures. Review Fisher instruction manuals, TBX Blowout Fixture (D103206X012) and Fisher Blowdown Fixture (D103207X012) prior to use. 11. After cleanliness of the piping system has been...

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Fisher® TBX Steam Conditioning Valve - 7

Instruction Manual Maintenance It is recommended that diagnostic tests be preformed on the valve 3-6 months prior to scheduled maintenance shutdowns. Complete valve disassembly is recommended if tests performed on the valve indicate leakage, sticking, or substandard operation. If diagnostics indicate normal valve operation, complete disassembly and inspection of the TBX is recommended during every other regularly scheduled outage or after 24-36 months, whichever comes first. Table 2 identifies the recommended inspection tips and diagnostics that can be performed with corresponding repair...

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Fisher® TBX Steam Conditioning Valve - 8

3. Loosen bonnet stud nuts (key 55) using an even pattern to avoid uneven expansion of the gaskets. Remove the entire bonnet assembly (key 6), pulling evenly in line with the valve stem (key 23) centerline. Uneven bonnet removal can result in galling or bending of the valve stem. If difficulty is encountered in removing the bonnet, check the bonnet for alignment and straighten the bonnet before making further attempts to remove it from the valve body. CAUTION The bonnet must be handled with care while being removed from the body. Damage to the bonnet can result in gasket leakage while the...

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