ammonia pipe marking guide front
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8/3/2019 Ammonia Pipe Marking Guide Front
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AMMONIA REFRIGERATION SYSTEM
PIPE MARKING GUIDE
1. AMMONIA PIPING ABBREVIATIONS:BD Booster Discharge
CD Condenser
DC Defrost Condensate
ES Economizer Suction
HGD Hot Gas Defrost
HPL High Pressure Liquid
HSD High Stage Discharge
HSS High Stage SuctionHTRL High Temperature Recirculated Liquid
HTRS High Temperature Recirculated Suction
LIC Liquid Injection Cooling
LSS Low Stage Suction
LTRL Low Temperature Recirculated Liquid
LTRS Low Temperature Recirculated Suction
RV Relief Vent
TSR Thermosyphon Return
TSS Thermosyphon Supply
2. PHYSICAL STATE:
The physical state of the refrigerant is located tothe left of Ammonia.
LIQ - Liquid State - black or white on an orange background
VAP- Vapor State - black or white on a blue background
USE BOTH if both states exist
3. MARKER BODY:
Ammonia printed in black letters on a yellowbackground.
Complies with I IAR ( Internat ional Inst i tute of Ammonia Refr igerat ion) Standards
The Pipe Marker should have FIVE sections.
4. PRESSURE LEVEL:
The pressure level of the refrigerant within the system piping
is located to the right of Ammonia.
HIGH - High Pressure - black or white on a redbackground
LOW - Low Pressure - black or white on a green backgroun
5. FLOW DIRECTION:The arrows indicate the direction of flow of the system content
GRAPHIC PRODUCTS
PO Box 4030 Beaverton, OR 97076
(800) 788-5572 (503) 644-5572 Fax: (503) 646-0183
[email protected] www.graphicproducts.com
This guide is for general information purposes only. It is not a substitute for review of applicable standards.
Inches
Outside Pipe DiameterIncluding Covering
3/4 to 1 1/4
1 1/2 to 22 1/2 to 6
8 to 10
over 10
19 to 32
38 to 5164 to 152
203 to 254
over 254
mm Inches
8
812
24
32
203
203305
610
813
mm Inches
1/2
3/41 1/4
2 1/2
3 1/2
13
1932
64
89
mm
Minimum Length of
Label Field Color
Minimum Height
of Letters
PIPEMARKER SIZE CHART