Parker Hannifin Corporation
Parflex Division
Ravenna, Ohio
Bulletin No. 4660-PGP2T
4
Parflex
® Flexible Gas Piping System
Design and Installation Guide
Table of Contents
4.3 Routing................................................................................................................................ 33
4.3.1 Vertical Runs .......................................................................................................... 33
4.3.2. Horizontal Runs ...................................................................................................... 33
4.3.3 Clearance Holes...................................................................................................... 33
4.3.4 Concealed Fittings .................................................................................................. 33
4.3.5 Modifying/Adding to Existing Piping Systems ........................................................ 34
4.3.6 Outdoor Routing...................................................................................................... 35
4.3.7 Routing through Fire Walls.....................................................................................35
4.4 Strike Protection................................................................................................................. 36
4.4.1 Striker Plates ......................................................................................................... 36
4.4.2 Metallic Conduit...................................................................................................... 38
4.5 Meter Hook-ups.................................................................................................................. 39
4.5.1 Self Supported Meter ............................................................................................. 39
4.5.2 Pipe Supported Meter............................................................................................. 39
4.6 Connections ........................................................................................................................ 41
4.6.1 Movable Appliance Connection............................................................................... 41
4.6.2 Non-Movable Appliance Connections..................................................................... 41
4.6.3 Specific Applications (Outdoor appliances / Fireplace) ......................................... 41
4.7 Manifold Stations ................................................................................................................ 45
4.7.1 Configurations ........................................................................................................ 45
4.7.2 Allowable Locations................................................................................................ 45
4.8 Line pressure Regulators ................................................................................................... 46
4.8.1 Installation requirements....................................................................................... 46
4.8.2 Venting.................................................................................................................... 46
Vent Limiter ............................................................................................................ 46
Vent Line Sizing Requirements........................................................................................... 46
4.8.3 Adjustments............................................................................................................ 46
4.8.4 Over-Pressurization Protection.............................................................................. 47
4.9 Underground Installations.................................................................................................. 47
4.10 Electrical Bonding and Grounding...................................................................................... 48
4.11 Additional Recommended Equipotential Bonding ............................................................. 48
Section 5.0 Inspection, Repair and Replacement
5.1 Minimum Requirements ..................................................................................................... 49
5.2 Repair of Damaged Tubing.................................................................................................. 50
5.2.1 Inspection ............................................................................................................... 50
5.2.2 Methods of Repair................................................................................................... 50
Section 6.0 Pressure/Leakage Testing
6.1 Testing Requirements ........................................................................................................ 51
6.1.1 Testing Low Pressure Systems............................................................................... 51
6.1.2 Testing Elevated Pressure Systems ....................................................................... 51
6.1.3 Testing Appliance Connections............................................................................... 51
Section 7.0 Sizing and Pressure Drop Tables
7.1 CSST Tables ........................................................................................................................ 52
7.2 Steel Pipe Table .................................................................................................................. 58
7.3 Specific Gravity Factor ........................................................................................................ 58
Section 8.0 Definitions
Offer of Sale
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