Parker Parflex User Manual

Parker Hannifin Corporation
Parflex Division
Ravenna, Ohio
Bulletin No. 4660-PGP2T
3
Parflex
®
Flexible Gas Piping System
Design and Installation Guide
Table of Contents
Continued
Table of Contents
Section 1.0 Introduction
1.1 Warnings to User ..................................................................................................................5
1.2 Design Guide Limitations ......................................................................................................5
1.3 Listing of Standards and Codes ............................................................................................ 5
Section 2.0 System and Components
2.1 Parflex System Description ..................................................................................................6
2.2 Parflex System Components
Tubing ..................................................................................................................................7
Mechanical Fittings ...............................................................................................................7
Stub-Outs ............................................................................................................................ 10
Protection Devices .............................................................................................................. 11
Regulators and Accessories ............................................................................................... 12
Manifolds ............................................................................................................................ 13
Shut-off Valves .................................................................................................................... 14
Other Components .............................................................................................................. 15
Section 3.0 System Configuration and Sizing
3.1 System Configuration
3.1.1 System Planning ..................................................................................................... 16
Sizing and Pressure Loss ....................................................................................... 16
Series System ......................................................................................................... 16
Parallel System ...................................................................................................... 17
3.1.2 Pressure System .................................................................................................... 17
Low Pressure System ............................................................................................. 17
Medium Pressure System ...................................................................................... 18
Dual Pressure System ............................................................................................ 18
Elevated Pressure System ...................................................................................... 18
3.2 System Sizing Methods and Examples
3.2.1 Sizing Methods ....................................................................................................... 19
3.2.2 Longest Length Series System Example (Low Pressure)....................................... 19
3.2.3 Longest Length Parallel System Example (Medium Pressure) .............................. 21
3.2.4 Dual Pressure System Example ............................................................................ 22
3.2.5 Parallel Elevated System Example ......................................................................... 23
3.2.6 Parflex System / Steel Pipe Hybrid System Example ............................................. 25
3.2.7 Parallel Medium Pressure System – Summation Method Example ....................... 26
3.2.8 Propane Elevated Dual Pressure System .............................................................. 27
Section 4.0 Installation Practices
4.1 General Practices ............................................................................................................... 29
4.2 Fitting Assembly ................................................................................................................. 30
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Parker Parflex Specifications

General

Brand	Parker
Model	Parflex
Category	Water Pump
Language	English