::: Rupture Pin Technology :::

RUPTURE DISC VS. RUPTURE PIN
COMPARE THE COSTS OVER 4 YEARS!

• When used as a stand alone pressure relief device
• 2" application at 250 PSI set pressure
• Assume Disc to Pin ratio 4 to 1 per year (15:4 ratio over four years)
(Ratios have been as high as 32:1 as shown. If that were the case, you would spend about $10,084.00 MORE on rupture discs over the course of 4 years! With the 15:4 ratio, you will still spend $4084.00 MORE on rupture discs!)

Why do disks fail so often? Discs are designed to fail early because the burst pressure is above the elastic limit. Our pins cannot fatigue and fail early because the buckling pressure of the pin is below the elastic limit.

Rupture Disc Costs Over 4 Years
Cost of 2" Rupture Disc Holder & Disc Carbon Steel Holder (1 holder + 1 disc) ----------------------- Year 1 Replacement Discs (3) ----------------------- Year 2 Replacement Discs (4) ----------------------- Year 3 Replacement Discs (4) ----------------------- Year 4 Replacement Discs (4) ----------------------- Replacement Disc Cost (each) ----------------------- Assumed Labor & Production Loss (A) 1 hr Replacement @ $50/hr (B) 1 hr Production Loss @ $100/hr ----------------------- . TOTAL Rupture Disc Costs After 4 Years Initial Cost ----------------------- 15 Discs ----------------------- Labor to Install Discs 15 x (A) ----------------------- Lost Production 15 x (B) ----------------------- . GRAND TOTAL -----------------------	. . . 400.00 ------------- . 600.00 ------------- . 800.00 ------------- . 800.00 ------------- . 800.00 ------------- . 200.00 ------------- . . . 50.00 . 100.00 ------------- . . . 400.00 ------------- 3000.00 ------------- . . 750.00 ------------- . 1500.00 ------------- . 5,650.00 -------------

Rupture Pin Costs Over 4 Years
Cost of 2" Rupture Pin Valve & 4 Pins Carbon Steel Body (1 valve + 4 pins) ----------------------- 1 Pin Used / 3 Remaining ----------------------- 2 Pins Used / 2 Remaining ----------------------- 3 Pins Used / 1 Remaining ----------------------- 4 Pins Used / O Remaining ----------------------- Cost of Future Pins (if needed) ----------------------- Assumed Labor & Production Loss (C) 10 min to Replace @ $50/hr (D) 10 min Production Loss @ $100/hr ----------------------- TOTAL Rupture Pin Costs After 4 Years Initial Cost ----------------------- 0 Pins (4 w/valve) ----------------------- Labor to Install Pins 3 x (C) ----------------------- Lost Production 3 x (D) ----------------------- GRAND TOTAL -----------------------	. . . 1491.00 ------------- . 0.00 ------------- . 0.00 ------------- . 0.00 ------------- . 0.00 ------------- . 50.33 ------------- . . . 8.33 . 16.66 ------------- . 1491.00 ------------- 0.00 ------------- . . 25.00 ------------- . 50.00 ------------- . 1,566.00 -------------

COSTS OF FIRST 3 YEARS

1 YEAR COST
DISC 1450.00 / PIN 1491.00 (41.00 More)

2 YEAR COST
DISC 2850.00 / PIN 1516.00 (1334.00 Less)

3 YEAR COST
DISC 4250.00 / PIN 1541.00 (2709.00 Less)