Pfeiffer 14c Series Maintenance Manual Download Page 1

Page: 1 / 8

Pfeiffer Chemie-Armaturenbau GmbH • Telefon: 02152 2005-0 • Telefax: 02152 1580 • E-Mail: [email protected] • Internet: www.pfeiffer-armaturen.com

1 of 8

Maintenance

Butterfly Valve Series 14b / 14c / 74b

0. Contents

1. Introduction

2. Design, operation and dimensions

3. Installation, start-up and maintenance

4. Assembly of the butterfl y valve

4.1 Preparation for the assembly

4.2 Assembly of the Butterfl y Valve

Series 14b

with live-loaded V-ring packing

4.3 Assembly of the Butterfl y Valve

Series 14b and

Series 74b with adjustable Stuffi ng box fl ange

4.4 Assembly of the Butterfl y Valve

Series 14b

with live-loaded V-ring packing

5. Malfunctions and their elimination

6. Repair of the butterfl y valve

7. Queries to the manufacturer

Fig. 1 - High-Performance Butterfl y valve Series 14b

Fig. 2 – Variants of Butterfl y Valves Series 14b, 14c and 74b

Summary of Contents for 14c Series

Page 1: ...butterfly valve 2 4 1 Preparation for the assembly 2 4 2 Assembly of the Butterfly Valve Series 14b 2 with live loaded V ring packing 4 3 Assembly of the Butterfly Valve Series 14b and 4 Series 74b wi...

Page 2: ...uring e g Gleitmo 805 from Fuchs For valves employed in oxygen environments this agent may not be used For grease free valves especially when employed in an oxy gen environment a suitable lubricant is...

Page 3: ...0 27 Screw A2 70 Table 1 List of parts Drill fitting holes to connect the shaft to the disc Then connect the disc and shaft using close tolerance grooved pins 14 Further assembly steps depend on the v...

Page 4: ...haft into the bearing hole of the body Then insert the spacer 21 Note Butterfly valves in nominal sizes DN 100 4 are assembled without a spacer 21 Screw studs 16 into the body Insert the washer 18 int...

Page 5: ...26 Screw A2 70 27 Screw A2 70 28 Thrust washer 1 4571 Table 2 List of parts 4 3 2 1 Assembling Butterfly Valves in sizes DN 250 10 and smaller Insert the sealing ring 4 into the body Note On doing so...

Page 6: ...g hole of the body and position correctly with the studs Fasten tight the bonnet evenly with nuts 17 in a crisscross patter Push the thrust washer 8 over the shaft s free end at the appropri ate place...

Page 7: ...ke sure that all parts are clean Place the fastening ring onto the sealing ring and position correctly using the screws 27 Tighten the screws evenly in a crisscross pattern 4 4 3 Notice of attaching a...

Page 8: ...ove the packing the valve is disassembled in the reverse order to that described in chapter 3 The PTFE rings of the packing are together with all plastic parts checked for damage and in case of doubt...