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
4