5
DUTY & PRESSURE RATINGS CHART
Size & Pressure Ratings
Light Duty
Nominal Iron Size
Max Working Pressure (PSI)
2”
15,000
3”
7,500
4”
5,000
Medium Duty
Nominal Iron Size
Max Working Pressure (PSI)
2”
20,000
3”
15,000
4”
10,000
Heavy Duty
Nominal Iron Size
Max Working Pressure (PSI)
2”
20,000
3”
15,000
4”
15,000
Above pressure ratings are valid for either gas or liquid frac media, and
apply to both non-waterproof and waterproof SPM
®
FSR
models.
NOTE:
SPM
®
FSR Ribs & Spines are rated for specific duty ratings.
Ribs should NEVER be substituted for Spines. Ribs & Spines from
different duty ratings should not be mixed.
NOTE:
SPM’s Medium Duty FSR System is rated for use on 4”
treating iron up to 10,000 psi. In instances where the product
is required for 4” 1502 lines, a double wrapping technique may
be used that will provide acceptable load rating for the flow line.
Please contact Weir Oil & Gas Engineering at 1-800-342-7458 for
more details regarding the double wrap procedure or if you have
further questions.
