Table of Contents
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Instruction Manual
D100425X012
Fisher
YD and YS 3-Way Valves
™
Contents
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Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for NPS 1/2 through 8 YD and NPS
1/2 through 6 YS control valves. Refer to separate manuals for instructions covering the actuators and accessories.
Do not install, operate, or maintain YD or YS 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 YD Valve with 667 Actuator
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W2081
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Emerson sales office
YD and YS Valves
or Local Business Partner before
July 2017
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Table of Contents
Related Manuals for Emerson Fisher YD
Summary of Contents for Emerson Fisher YD
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Page 1: Table Of Contents
™ Contents Figure 1. Fisher YD Valve with 667 Actuator Introduction ....... . . -
Page 2: Specifications
2. The pressure or temperature limits in this manual, and any applicable standard limitations, should not be exceeded. 3. Certain bonnet bolting material selections may require a CL600 easy‐e valve assembly to be derated. Contact your Emerson sales office or Local Business Partner. -
Page 3: Installation
4. Do not install the valve in a system where the working pressures exceed those specified in the ASME pressure/temperature ratings or those specified by Emerson Automation Solutions. 5. If continuous operation is required during maintenance and inspection, install a conventional three‐valve bypass around the valve so that the valve can be isolated. -
Page 4: Maintenance
For further information, consult your Emerson sales office or Local Business Partner. Table 2. Valve Body Sizes and End Connections... -
Page 5: Packing Lubrication
Instruction Manual YD and YS Valves D100425X012 July 2017 D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure from both sides of the valve. Drain the process media from both sides of the valve. D Vent the power actuator loading pressure and relieve any actuator spring precompression. -
Page 6: Packing Maintenance
Instruction Manual YD and YS Valves July 2017 D100425X012 Packing Maintenance Note For valves with ENVIRO‐SEAL packing, see the Fisher instruction manual ENVIRO‐SEAL Packing System for Sliding‐Stem Valves for packing instructions. For valves with HIGH‐SEAL packing, see the Fisher instruction manual HIGH‐SEAL Live‐Loaded Packing System for packing instructions. -
Page 7: Trim Maintenance
Instruction Manual YD and YS Valves D100425X012 July 2017 1. Remove the actuator and bonnet according to steps 1 through 4 of the Disassembly procedure in the Maintenance section on page 7. 2. With the stem and valve plug assembly removed from the bonnet, remove the packing nuts (key 5), packing flange (key 3), wiper ring (key 12), and packing follower (key 13) from the bonnet. - Page 8 Instruction Manual YD and YS Valves July 2017 D100425X012 WARNING See the WARNING at the beginning of the Maintenance section for more information. 2. Disconnect the actuator stem connector and remove the locknut (key 15, figure 13) that holds the actuator to the valve.
- Page 9 Instruction Manual YD and YS Valves D100425X012 July 2017 Figure 4. Detail of Fisher PTFE/Composition Packing Arrangements UPPER WIPER (KEY 12) PACKING FOLLOWER (KEY 13) PACKING RING (KEY 7) LANTERN RING (KEY 8) PACKING BOX RING (KEY 11) 9.5 mm 12.7 mm 19.1, 25.4, OR 31.8 mm (3/8 INCH)
- Page 10 Instruction Manual YD and YS Valves July 2017 D100425X012 Figure 6. PTFE Packing Arrangements for Use in Fisher ENVIRO‐SEAL Bellows Seal Bonnets UPPER WIPER (KEY 12) BUSHING (KEY 13) PACKING SET: (KEY 6) FEMALE ADAPTOR PACKING RING MALE ADAPTOR SPACER (KEY 8) THRUST RING...
- Page 11 CL600: 522 (385) 1. For other materials, contact your Emerson sales office or Local Business Partner. 2. For NPS 8 YD valves, the bottom adaptor has shorter bolts than the bonnet, but the bolt torque is the same as the bonnet torque.
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Page 12: Assembly
Instruction Manual YD and YS Valves July 2017 D100425X012 CAUTION Never use an old stem with a new valve plug. The use of an old stem requires drilling a new pin hole through the stem (or adaptor, in case an ENVIRO‐SEAL bellows seal bonnet is being used). This drilling weakens the stem or adaptor and may cause failure in service. - Page 13 Personal injury or damage to equipment could occur if improper stud and nut materials or parts are used. Do not operate or assemble this product with stud(s) and nut(s) that are not approved by Emerson/Fisher engineering and/or listed on the serial card provided with this product.
- Page 14 Instruction Manual YD and YS Valves July 2017 D100425X012 12. Lubricate the valve stud bolts or cap screws (key 15) and install the nuts (key 16) on the bolts using accepted bolting practices. Tighten the nuts to the recommended bolt torques given in table 5. Follow a pattern similar to that shown in figure 8.
- Page 15 Personal injury or damage to equipment could occur if improper stud and nut materials or parts are used. Do not operate or assemble this product with stud(s) and nut(s) that are not approved by Emerson/Fisher engineering and/or listed on the serial card provided with this product.
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Page 16: Enviro-Sealt Bellows Seal Bonnet
Personal injury or damage to equipment could occur if improper stud and nut materials or parts are used. Do not operate or assemble this product with stud(s) and nut(s) that are not approved by Emerson/Fisher engineering and/or listed on the serial card provided with this product. - Page 17 Instruction Manual YD and YS Valves D100425X012 July 2017 CAUTION To prevent possible product damage, cover the opening in the valve in the following procedure to protect the sealing surfaces and to prevent foreign material from getting into the valve body cavity. 3.
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Page 18: Replacement Of An Installed Enviro-Seal Bellows Seal Bonnet (Stem/Bellows Assembly)
Personal injury or damage to equipment could occur if improper stud and nut materials or parts are used. Do not operate or assemble this product with stud(s) and nut(s) that are not approved by Emerson/Fisher engineering and/or listed on the serial card provided with this product. -
Page 19: Purging The Enviro-Seal Bellows Seal Bonnet
Instruction Manual YD and YS Valves D100425X012 July 2017 can be installed. If the existing valve plug is reused, and the adaptor is in good condition, it may also be reused. However, never reuse an old adaptor with a new valve plug. Using an old adaptor with a new valve plug requires drilling a new pin hole in the adaptor. - Page 20 Instruction Manual YD and YS Valves July 2017 D100425X012 1. Remove the two diametrically opposed pipe plugs (key 16). 2. Connect a purging fluid to one of the pipe plug connections. 3. Install appropriate piping or tubing in the other pipe plug connection to pipe away the purging fluid or to make a connection to an analyzer for leak testing.
- Page 21 Instruction Manual YD and YS Valves D100425X012 July 2017 Figure 10. Fisher YD Valve (Standard) 40A3552‐F COMMON PORT Figure 11. Fisher YD Valve (High Temperature) 40A3552‐F...
- Page 22 Instruction Manual YD and YS Valves July 2017 D100425X012 Figure 12. Fisher NPS 8 YD Valve VIEW D 54B9114-A COMMON PORT...
- Page 23 Instruction Manual YD and YS Valves D100425X012 July 2017 Figure 13. Fisher Standard Bonnet AU3910-A E1087 PLAIN BONNET Figure 14. Fisher Extension Bonnet Figure 15. Fisher ENVIRO‐SEAL Bellows Seal Bonnet j APPLY LUB 42B3947-A CU3911-C STYLE 1 OR 2 ENVIRO-SEAL EXTENSION BONNET BELLOWS SEAL BONNET...
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Page 24: Parts Ordering
WARNING Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Automation Solutions should not, under any circumstances, be used in any Fisher valve, because they may void your warranty, might adversely affect the performance of the valve, and could cause personal injury and property damage. -
Page 25: Gasket Kits
Instruction Manual YD and YS Valves D100425X012 July 2017 Gasket Kits Gasket Kits (Includes keys 9, 11, 14, and 22) (Includes keys 9, 11, 12, 13, 14, and 22) VALVE SIZE, NPS Part Number Part Number NPS 1/2 to 1-1/2 RGASKETXB62 RGASKETXC22 NPS 2 to 2-1/2... -
Page 26: Parts List
39B4153‐A Note Part numbers are shown for recommended spares only. For part Figure 17. Typical Fisher ENVIRO‐SEAL Packing Sys numbers not shown, contact your Emerson sales office or Local Business tem with PTFE Packing Partner. Note Part numbers for most key numbers are listed in tables which follow. - Page 27 Instruction Manual YD and YS Valves D100425X012 July 2017 Keys 2*, 5*, and 6* Valve Plug and Stem Assembly for Plain Bonnet STEM DIAMETER YD STANDARD YD HIGH TEMPERATURE & VSC SIZE VALVE SIZE, NPS CB7CU‐1 CF8M CB7CU‐1 CF8M S41600 S31600 Inches (17‐4PH SST)
- Page 28 Instruction Manual YD and YS Valves D100425X012 July 2017 Key 5* Valve Plug Stem STEM SIZE VALVE STEM CONNECTION YD, S31600 (316 SST) YS, S31600 (316 SST) VALVE SIZE, Standard Style 1 Ext. Standard Style 1 Ext. Inch Inch Bonnet Bonnet Bonnet Bonnet...
- Page 29 Instruction Manual YD and YS Valves D100425X012 July 2017 Key 9* Bonnet Gasket and Key 22* Shim KEY 9 (YD & YS) KEY 22 (YD & YS) VALVE SIZE, FGM (Graphite/S31600) S31600 (316 SST) 1/2 ‐ 1‐1/2 1R2859X0042 16A1936X012 2, 2‐1/2 1R3299X0042 16A1938X012 1R3484X0042...
- Page 30 Instruction Manual YD and YS Valves D100425X012 July 2017 Keys 3, 4, 9, 11, 14, and 19 (NPS 8 YD Only) PLUG/ CAGE / STEM SPIRAL WOUND GASKET, O-RING O-RING KEY 3 KEY 11 KEY 14 KEY 19 CAGE RETAINER GASKET, QTY 3, High KEY 4...
- Page 31 Instruction Manual YD and YS Valves D100425X012 July 2017 Description Part Number Description Part Number NPS 1 w/ 9.5 mm (3/8 inch) stem 32B4224X012 Filament packing ring for NPS 3 and 4 NPS 1‐1/2 w/ 9.5 mm (3/8 inch) stem 32B4225X012 with 12.7 mm (1/2 inch) stem (4 req'd) 14A0915X042...
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Page 32: D100425X012 July
Fisher and ENVIRO-SEAL are marks owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.