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Instruction Manual
D104197X012
™
Fisher
NPS 8 CHP Control Valve
Contents
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Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for the Fisher CHP control valve.
Refer to separate manuals for instructions covering the actuator, positioner, and accessories.
Do not install, operate, or maintain CHP valves 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
proceeding.
www.Fisher.com
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Figure 1. Fisher CHP NPS 8 Control Valve
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X1365
Emerson Process Management sales office
NPS 8 CHP Valve
September 2016
before
Table of Contents
Related Manuals for Emerson Fisher NPS 8 CHP
Summary of Contents for Emerson Fisher NPS 8 CHP
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Page 1: Table Of Contents
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. -
Page 2: Description
PEEK (Poly Ether Ether Ketone) anti-extrusion ring with a pressure-assisted spring-loaded seal ring. Educational Services For information on available courses for the Fisher CHP valve, as well as a variety of other products, contact: Emerson Process Management Educational Services - Registration Phone: 1-641-754-3771 or 1-800-338-8158 E-mail: [email protected] http://www.emersonprocess.com/education... -
Page 3: Installation
When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature, pressure drop, and controlled fluid conditions. Because some body/trim material combinations are limited in their pressure drop and temperature ranges, do not apply any other conditions to the valve without first checking with your Emerson Process Management sales office. -
Page 4: Maintenance
Instruction Manual NPS 8 CHP Valve September 2016 D104197X012 WARNING Avoid personal injury or damage caused by uncontrolled movement or dropping of the assembly valve: D Swivel hoist rings are sized to lift only the valve and actuator. Do not attached piping or other structures to the valve and actuator assembly when lifting swivel hoist rings. - Page 5 Instruction Manual NPS 8 CHP Valve September 2016 D104197X012 Figure 2. Packing Arrangements UPPER WIPER (KEY 12) UPPER WIPER (KEY 12) PACKING FOLLOWER PACKING FOLLOWER PACKING FOLLOWER (KEY 13) (KEY 13) (KEY 13) FEMALE ADAPTOR GRAPHITE LAMINATE (KEY 32) PACKING RING PACKING RING (KEY 7) (KEY 7) KEY 6...
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Page 6: Packing Maintenance
Instruction Manual NPS 8 CHP Valve September 2016 D104197X012 Table 2. CL2500 Recommended Torque for Packing Flange Nuts (non live‐loaded) TORQUE VALVE STEM DIAMETER lbfSft PRESSURE RATING Inches 31.8 1‐1/4 CL2500 Table 3. Torque for Body‐to‐Bonnet Bolting Using Anti‐Seize Lubricant BOLT TORQUES SA193‐B7, B16 VALVE RATING... -
Page 7: Adding Packing Rings
Instruction Manual NPS 8 CHP Valve September 2016 D104197X012 Adding Packing Rings WARNING Refer to the WARNING at the beginning of the Maintenance section in this instruction manual. To avoid personal injury or equipment damage resulting from packing leakage, inspect the valve plug stem and packing box wall for nicks or scratches while performing the following procedures. - Page 8 Instruction Manual NPS 8 CHP Valve September 2016 D104197X012 CAUTION When lifting the bonnet (key 14), be sure that the valve plug and stem assembly (keys 3 and 4) remains on the seat ring (key 7). This avoids damage to the seating surfaces as a result of the assembly dropping from the bonnet after being lifted part way out.
- Page 9 Instruction Manual NPS 8 CHP Valve September 2016 D104197X012 Figure 3. Installing Graphite Ribbon/Filament Packing Rings One at a Time VALVE STEM PACKING FOLLOWER BONNET TOP OF PACKING RING EVEN WITH BOTTOM OF ENTRANCE CHAMFER INSTALLING INSTALLING FIRST PACKING RING SECOND PACKING RING A2207‐2 Note...
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Page 10: Trim Removal
Instruction Manual NPS 8 CHP Valve September 2016 D104197X012 For the spring‐loaded PTFE V‐ring packing shown in figure 2, tighten the packing flange nuts until the shoulder on the packing follower contacts the bonnet. For graphite packing, tighten the packing flange nuts to the maximum recommended torque shown in table 2. Then, loosen the packing flange nuts, and retighten them to the recommended minimum torque shown in table 2. -
Page 11: Lapping Seats
Instruction Manual NPS 8 CHP Valve September 2016 D104197X012 4. Drive in the pin to lock the assembly. 5. If it is necessary to lap the seating surfaces, complete the lapping seats procedure before installing the seal ring. The Trim Replacement procedure provides seal ring installation instructions and valve reassembly instructions. Lapping Seats Key numbers referenced in this procedure are shown in figure 4, except where indicated. -
Page 12: Parts Ordering
Refer to the serial number when contacting your Emerson Process Management sales office for technical assistance. When ordering replacement parts, reference the valve serial number to obtain the correct eleven‐character part number for each part;... -
Page 13: Parts List
Bonnet Assembly (figure 6) Note Contact your Emerson Process Management sales office for Part Ordering information. Description 1 Bonnet 2... -
Page 14: Nps 8 Chp Valve September
Instruction Manual NPS 8 CHP Valve September 2016 D104197X012...