Pressure Relief Valves (PRV) for Pressure Cars
Midland Pressure Relief Valves offer performance, reliability and flexibility of use in one easy to maintain, reliable product design. Interior and exterior valve body designs are available in every DOT pressure rating, from 225 psig to 495 psig, and flow rates up to 49,912 scfm. Midland provides the appropriate valve to meet your application needs. Plus, Midland experience delivers technically superior products that perform over the long haul. Seals are easily replaced for use with diverse commodities to maximize the in-service time of every tank car. Sealed spring chambers and bubble-tight seal testing of every valve assure long-life and safe operation, even when used in harsh chemical environments.
Features & Benefits
Pressure Relief Valves (PRV)
- Easy to maintain, reliable designs available in internal and top styles
- Interior and exterior valve body designs are available in every DOT pressure rating, from 225 psig to 495 psig, and flow rates up to 49,912 scfm
- Sealed spring chambers and bubble-tight seal testing of every valve ensure long life and safe operation
- Seals are easily replaced for use with diverse commodities to maximize the in-service time of every tank car
Latest Pressure Relief Valve (PRV) A-1076
Midland’s A-1076 Series Pressure Relief Valves and dual angle/check valve systems, combined with FRA-approved top-fitting protection systems provide maximum protection against accidental release, and non-accidental release of ethylene oxide (EO) to the atmosphere.
For all the benefits of the A-1076 Series:
Large Internal Pressure Relief Valves
| Base Model | Note | Mounting | Flange Mount Thickness | STD Pressure (psig) | Flow Rate (scfm) | Net Flow Area (sq in.) | AAR# | Materials | Drawing |
| A-34225 | w/ guide tube | Tongue & Groove | 1.25" | 225 | 25,063 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-34229 | w/ guide tube | Tongue & Groove | 1.25" | 225 | 25,063 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-34247 | w/ guide tube | Tongue & Groove | 1.25" | 247.5 | 22,598 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-34251 | w/ guide tube | Tongue & Groove | 1.25" | 247.5 | 22,598 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3455 | w/ guide tube | Tongue & Groove | 1.25" | 255 | 26,167 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-3459 | w/ guide tube | Tongue & Groove | 1.25" | 255 | 26,167 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3480 | w/ guide tube | Tongue & Groove | 1.25" | 280.5 | 24,440 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-3484 | w/ guide tube | Tongue & Groove | 1.25" | 280.5 | 24,440 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3400 | w/ guide tube | Tongue & Groove | 1.25" | 300 | 27,930 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-3404 | w/ guide tube | Tongue & Groove | 1.25" | 300 | 27,930 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3430 | w/ guide tube | Tongue & Groove | 1.25" | 330 | 31,771 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-3434 | w/ guide tube | Tongue & Groove | 1.25" | 330 | 31,771 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3454 | w/ guide tube | Tongue & Groove | 1.25" | 150 | 20,500 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3450 | w/ guide tube | Tongue & Groove | 1.25" | 150 | 20,500 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-35225 | w/ guide tube | Tongue & Groove | 1.25" | 225 | 23,198 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| A-35247 | w/ guide tube | Tongue & Groove | 1.25" | 247.5 | 26,433 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| A-35255 | w/ guide tube | Tongue & Groove | 1.25" | 255 | 27,808 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| A-35280 | w/ guide tube | Tongue & Groove | 1.25" | 280.5 | 28,245 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| w/ guide tube | Tongue & Groove | 1.25" | 280.5 | 33,122 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35280-XL SERIES | |
| A-35300 | w/ guide tube | Tongue & Groove | 1.25" | 300 | 31,036 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| A-35330 | w/ guide tube | Tongue & Groove | 1.25" | 330 | 35,107 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| A-37225 | w/ guide tube | Tongue & Groove | 1.25" | 225 | 34,713 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
| A-37247 | w/ guide tube | Tongue & Groove | 1.25" | 247.5 | 37,254 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
| A-37255 | w/ guide tube | Tongue & Groove | 1.25" | 255 | 38,528 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
| A-37280 | w/ guide tube | Tongue & Groove | 1.25" | 280.5 | 39,612 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
| A-37300 | w/ guide tube | Tongue & Groove | 1.25" | 300 | 44,614 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
| A-37330 | w/ guide tube | Tongue & Groove | 1.25" | 330 | 49,912 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
Small Internal Pressure Relief Valves
| Base Model | Note | Mounting | Flange Mount Thickness | STD Pressure (psig) | Flow Rate (scfm) | AAR# | Materials | Drawing |
| A-1280 | PRV with stack | Tongue and groove | .75" | 280.5 | 3,576 | PRD202125 | Carbon Steel w/ SS trim | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 280.5 | 3,576 | PRD202125 | Carbon Steel w/ SS trim | A-1000-F SERIES | |
| A-1284 | PRV with stack | Tongue and groove | .75" | 280.5 | 3,697 | PRD202125 | Stainless Steel | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 280.5 | 3,697 | PRD202125 | Stainless Steel | A-1000-F SERIES | |
| A-1300 | PRV with stack | Tongue and groove | .75" | 300 | 3,516 | PRD202125 | Carbon Steel w/ SS trim | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 300 | 3,516 | PRD202125 | Carbon Steel w/ SS trim | A-1000-F SERIES | |
| A-1304 | PRV with stack | Tongue and groove | .75" | 300 | 3,695 | PRD202125 | Stainless Steel | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 300 | 3,695 | PRD202125 | Stainless Steel | A-1000-F SERIES | |
| A-1330 | PRV with stack | Tongue and groove | .75" | 330 | 4,322 | PRD202125 | Carbon Steel w/ SS trim | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 330 | 4,322 | PRD202125 | Carbon Steel w/ SS trim | A-1000-F SERIES | |
| A-1334 | PRV with stack | Tongue and groove | .75" | 330 | 4,262 | PRD202125 | Stainless Steel | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 330 | 4,262 | PRD202125 | Stainless Steel | A-1000-F SERIES | |
| A-1375 | PRV with stack | Tongue and groove | .75" | 375 | 4,220 | PRD202125 | Carbon Steel w/ SS trim | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 375 | 4,220 | PRD202125 | Carbon Steel w/ SS trim | A-1000-F SERIES | |
| A-1379 | PRV with stack | Tongue and groove | .75" | 375 | 4,615 | PRD202125 | Stainless Steel | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 375 | 4,615 | PRD202125 | Stainless Steel | A-1000-F SERIES | |
| A-1450 | PRV with stack | Tongue and groove | .75" | 450 | 4,705 | PRD202125 | Carbon Steel w/ SS trim | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 450 | 4,705 | PRD202125 | Carbon Steel w/ SS trim | A-1000-F SERIES | |
| A-1076 | PRV with Flange | Tongue and groove | 1" | 75 | 965 | PRD152001 | Stainless Steel | A-1076 |
External Pressure Relief Valves
| /content/dam/fts/midland-media/EI2.pdfBase Model | Note | Mounting | STD Pressure (psig) | Flow Rate (scfm) | AAR# | Materials | Drawing |
| A-14167-KY | Kynar Insert | Flat Face | 165 | 3,612 | ST#447 | Stainless Steel | A-14167 Drawing |
| A-14225-T-A | rupture disc above pressure plate | Tongue and groove | 225 | 4,629 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14229-T-A | rupture disc above pressure plate | Tongue and groove | 225 | 4,629 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14247-T-A | rupture disc above pressure plate | Tongue and groove | 247.5 | 5,788 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14251-T-A | rupture disc above pressure plate | Tongue and groove | 247.5 | 5,788 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14255-T-A | rupture disc above pressure plate | Tongue and groove | 255 | 4,606 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14259-T-A | rupture disc above pressure plate | Tongue and groove | 255 | 4,606 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14280-T-A | rupture disc above pressure plate | Tongue and groove | 280.5 | 5,177 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14284-T-A | rupture disc above pressure plate | Tongue and groove | 280.5 | 5,177 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14300-T-A | rupture disc above pressure plate | Tongue and groove | 300 | 6,024 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14304-T-A | rupture disc above pressure plate | Tongue and groove | 300 | 6,024 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14330-T-A | rupture disc above pressure plate | Tongue and groove | 330 | 5,085 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14334-T-A | rupture disc above pressure plate | Tongue and groove | 330 | 5,085 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14375-T-A | rupture disc above pressure plate | Tongue and groove | 375 | 7,299 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14379-T-A | rupture disc above pressure plate | Tongue and groove | 375 | 7,299 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14450-T-A | rupture disc above pressure plate | Tongue and groove | 450 | 6,971 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14454-T-A | rupture disc above pressure plate | Tongue and groove | 450 | 6,971 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14495-T-A | rupture disc above pressure plate | Tongue and groove | 495 | 8,615 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14499-T-A | rupture disc above pressure plate | Tongue and groove | 495 | 8,615 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14227-ML-A | rupture disc above pressure plate | Tongue and groove | 210 | 4,629 | PRD212110 | SS, Hastelloy, Monel | A-1402-ML-A SERIES |
| A-14377-ML-A | rupture disc above pressure plate | Tongue and groove | 375 | 7,299 | PRD212110 | SS, Hastelloy, Monel | A-1402-ML-A SERIES |
| A-14502-ML-A | rupture disc above pressure plate | Tongue and groove | 470 | 8,816 | PRD212110 | SS, Hastelloy, Monel | A-1402-ML-A SERIES |
| A-14227C-ML | rupture disc above pressure plate | Tongue and groove | 225 | 4,367 | PRD202104 | SS, Hastelloy, Monel | A-1402-C Series |
| A-14377C-ML | rupture disc above pressure plate | Tongue and groove | 375 | 7,070 | PRD202104 | SS, Hastelloy, Monel | A-1402-C Series |
| A-14228-ML | ENHANCED FITTINGS - rupture disc within pressure plate | Tongue and groove | 225 | 4,829 | PRD2103 | SS, Hastelloy, Monel | A-1400-ML-A ENHANCED FITTING SERIES |
| A-14378-ML | ENHANCED FITTINGS - rupture disc within pressure plate | Tongue and groove | 375 | 7,299 | PRD2103 | SS, Hastelloy, Monel | A-1400-ML-A ENHANCED FITTING SERIES |
| A-14452-HC-A | rupture disc above pressure plate | Tongue and groove | 450 | 6,971 | PRD082004 | SS, Hastelloy, Monel | A-1400-HC SERIES |
| A-14497-HC-A | rupture disc above pressure plate | Tongue and groove | 495 | 8,616 | PRD082004 | SS, Hastelloy, Monel | A-1400-HC SERIES |
| A-15227-HC | rupture disc above pressure plate | Tongue and groove | 225 | 12,034 | PRD202128 | SS, Hastelloy, Monel | A-15227-HC |
| A-15241-HC | rupture disc above pressure plate | Tongue and groove | 239 | 12,740 | PRD202128 | SS, Hastelloy, Monel | A-15241-HC |
| A-15452-HC | rupture disc above pressure plate | Tongue and groove | 428 | 24,490 | PRD202128 | SS, Hastelloy, Monel | A-15242-HC |
| A-17225 | Top Style | Tongue and groove | 225 | 3250 | PRD202123 | Steel | A-1700 Drawing |
| A-17229 | Top Style | Tongue and groove | 225 | 3250 | PRD202123 | Stainless Steel | A-1700 Drawing |
| A-17375 | Top Style | Tongue and groove | 375 | 3646 | PRD202123 | Steel | A-1700 Drawing |
| A-17225-T | rupture disc above pressure plate | Tongue and groove | 225 | 3250 | PRD202124 | Steel | A-1700-T |
| A-17229-T | rupture disc above pressure plate | Tongue and groove | 225 | 3250 | PRD202124 | Stainless Steel | A-1700-T |
| A-17250-T-A | rupture disc above pressure plate | Tongue and groove | 250 | 3368 | PRD202124 | Steel | A-17250-T-A |
| A-17300-T | rupture disc above pressure plate | Tongue and groove | 300 | 4020 | PRD202124 | Steel | A-1700-T |
| A-19202-NIRD | Top style with frangible disc | Tongue and groove | 200 | 24,171 | Only Available for Replacement | Stainless Steel | A-19202-NIRD |
| A-19227 | Top style with frangible disc | Tongue and groove | 225 | 24,800 | Only Available for Replacement | Stainless Steel | A-1900 Series |
| A-19257 | Top style with frangible disc | Tongue and groove | 255 | 27,800 | Only Available for Replacement | Stainless Steel | A-1900 Series |
| A-19282 | Top style with frangible disc | Tongue and groove | 278 | 30,000 | Only Available for Replacement | Stainless Steel | A-1900 Series |
| A-19300 | Top style with frangible disc | Tongue and groove | 300 | 32,150 | Only Available for Replacement | Stainless Steel | A-1900 Series |
| A-19302 | Top style with frangible disc | Tongue and groove | 300 | 32,150 | Only Available for Replacement | Stainless Steel | Temporarily Unavailable |
Features & Benefits
Pressure Relief Valves (PRV)
- Easy to maintain, reliable designs available in internal and top styles
- Interior and exterior valve body designs are available in every DOT pressure rating, from 225 psig to 495 psig, and flow rates up to 49,912 scfm
- Sealed spring chambers and bubble-tight seal testing of every valve ensure long life and safe operation
- Seals are easily replaced for use with diverse commodities to maximize the in-service time of every tank car
Latest Pressure Relief Valve (PRV) A-1076
Midland’s A-1076 Series Pressure Relief Valves and dual angle/check valve systems, combined with FRA-approved top-fitting protection systems provide maximum protection against accidental release, and non-accidental release of ethylene oxide (EO) to the atmosphere.
For all the benefits of the A-1076 Series:
Large Internal Pressure Relief Valves
| Base Model | Note | Mounting | Flange Mount Thickness | STD Pressure (psig) | Flow Rate (scfm) | Net Flow Area (sq in.) | AAR# | Materials | Drawing |
| A-34225 | w/ guide tube | Tongue & Groove | 1.25" | 225 | 25,063 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-34229 | w/ guide tube | Tongue & Groove | 1.25" | 225 | 25,063 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-34247 | w/ guide tube | Tongue & Groove | 1.25" | 247.5 | 22,598 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-34251 | w/ guide tube | Tongue & Groove | 1.25" | 247.5 | 22,598 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3455 | w/ guide tube | Tongue & Groove | 1.25" | 255 | 26,167 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-3459 | w/ guide tube | Tongue & Groove | 1.25" | 255 | 26,167 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3480 | w/ guide tube | Tongue & Groove | 1.25" | 280.5 | 24,440 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-3484 | w/ guide tube | Tongue & Groove | 1.25" | 280.5 | 24,440 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3400 | w/ guide tube | Tongue & Groove | 1.25" | 300 | 27,930 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-3404 | w/ guide tube | Tongue & Groove | 1.25" | 300 | 27,930 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3430 | w/ guide tube | Tongue & Groove | 1.25" | 330 | 31,771 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-3434 | w/ guide tube | Tongue & Groove | 1.25" | 330 | 31,771 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3454 | w/ guide tube | Tongue & Groove | 1.25" | 150 | 20,500 | 7.85 | PRD132003 | Stainless Steel | A-3404 SERIES |
| A-3450 | w/ guide tube | Tongue & Groove | 1.25" | 150 | 20,500 | 7.85 | PRD132003 | Stainless Steel & Steel Plated | A-3400 SERIES |
| A-35225 | w/ guide tube | Tongue & Groove | 1.25" | 225 | 23,198 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| A-35247 | w/ guide tube | Tongue & Groove | 1.25" | 247.5 | 26,433 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| A-35255 | w/ guide tube | Tongue & Groove | 1.25" | 255 | 27,808 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| A-35280 | w/ guide tube | Tongue & Groove | 1.25" | 280.5 | 28,245 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| w/ guide tube | Tongue & Groove | 1.25" | 280.5 | 33,122 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35280-XL SERIES | |
| A-35300 | w/ guide tube | Tongue & Groove | 1.25" | 300 | 31,036 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| A-35330 | w/ guide tube | Tongue & Groove | 1.25" | 330 | 35,107 | 6.91 | PRD202136 | Stainless Steel & Steel Plated | A-35000 SERIES |
| A-37225 | w/ guide tube | Tongue & Groove | 1.25" | 225 | 34,713 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
| A-37247 | w/ guide tube | Tongue & Groove | 1.25" | 247.5 | 37,254 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
| A-37255 | w/ guide tube | Tongue & Groove | 1.25" | 255 | 38,528 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
| A-37280 | w/ guide tube | Tongue & Groove | 1.25" | 280.5 | 39,612 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
| A-37300 | w/ guide tube | Tongue & Groove | 1.25" | 300 | 44,614 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
| A-37330 | w/ guide tube | Tongue & Groove | 1.25" | 330 | 49,912 | 7.85 | PRD192104 | Stainless Steel & Steel Plated | A-37000 SERIES |
Small Internal Pressure Relief Valves
| Base Model | Note | Mounting | Flange Mount Thickness | STD Pressure (psig) | Flow Rate (scfm) | AAR# | Materials | Drawing |
| A-1280 | PRV with stack | Tongue and groove | .75" | 280.5 | 3,576 | PRD202125 | Carbon Steel w/ SS trim | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 280.5 | 3,576 | PRD202125 | Carbon Steel w/ SS trim | A-1000-F SERIES | |
| A-1284 | PRV with stack | Tongue and groove | .75" | 280.5 | 3,697 | PRD202125 | Stainless Steel | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 280.5 | 3,697 | PRD202125 | Stainless Steel | A-1000-F SERIES | |
| A-1300 | PRV with stack | Tongue and groove | .75" | 300 | 3,516 | PRD202125 | Carbon Steel w/ SS trim | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 300 | 3,516 | PRD202125 | Carbon Steel w/ SS trim | A-1000-F SERIES | |
| A-1304 | PRV with stack | Tongue and groove | .75" | 300 | 3,695 | PRD202125 | Stainless Steel | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 300 | 3,695 | PRD202125 | Stainless Steel | A-1000-F SERIES | |
| A-1330 | PRV with stack | Tongue and groove | .75" | 330 | 4,322 | PRD202125 | Carbon Steel w/ SS trim | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 330 | 4,322 | PRD202125 | Carbon Steel w/ SS trim | A-1000-F SERIES | |
| A-1334 | PRV with stack | Tongue and groove | .75" | 330 | 4,262 | PRD202125 | Stainless Steel | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 330 | 4,262 | PRD202125 | Stainless Steel | A-1000-F SERIES | |
| A-1375 | PRV with stack | Tongue and groove | .75" | 375 | 4,220 | PRD202125 | Carbon Steel w/ SS trim | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 375 | 4,220 | PRD202125 | Carbon Steel w/ SS trim | A-1000-F SERIES | |
| A-1379 | PRV with stack | Tongue and groove | .75" | 375 | 4,615 | PRD202125 | Stainless Steel | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 375 | 4,615 | PRD202125 | Stainless Steel | A-1000-F SERIES | |
| A-1450 | PRV with stack | Tongue and groove | .75" | 450 | 4,705 | PRD202125 | Carbon Steel w/ SS trim | A-1000 SERIES |
| PRV with stack | Flat face | .75" | 450 | 4,705 | PRD202125 | Carbon Steel w/ SS trim | A-1000-F SERIES | |
| A-1076 | PRV with Flange | Tongue and groove | 1" | 75 | 965 | PRD152001 | Stainless Steel | A-1076 |
External Pressure Relief Valves
| /content/dam/fts/midland-media/EI2.pdfBase Model | Note | Mounting | STD Pressure (psig) | Flow Rate (scfm) | AAR# | Materials | Drawing |
| A-14167-KY | Kynar Insert | Flat Face | 165 | 3,612 | ST#447 | Stainless Steel | A-14167 Drawing |
| A-14225-T-A | rupture disc above pressure plate | Tongue and groove | 225 | 4,629 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14229-T-A | rupture disc above pressure plate | Tongue and groove | 225 | 4,629 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14247-T-A | rupture disc above pressure plate | Tongue and groove | 247.5 | 5,788 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14251-T-A | rupture disc above pressure plate | Tongue and groove | 247.5 | 5,788 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14255-T-A | rupture disc above pressure plate | Tongue and groove | 255 | 4,606 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14259-T-A | rupture disc above pressure plate | Tongue and groove | 255 | 4,606 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14280-T-A | rupture disc above pressure plate | Tongue and groove | 280.5 | 5,177 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14284-T-A | rupture disc above pressure plate | Tongue and groove | 280.5 | 5,177 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14300-T-A | rupture disc above pressure plate | Tongue and groove | 300 | 6,024 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14304-T-A | rupture disc above pressure plate | Tongue and groove | 300 | 6,024 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14330-T-A | rupture disc above pressure plate | Tongue and groove | 330 | 5,085 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14334-T-A | rupture disc above pressure plate | Tongue and groove | 330 | 5,085 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14375-T-A | rupture disc above pressure plate | Tongue and groove | 375 | 7,299 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14379-T-A | rupture disc above pressure plate | Tongue and groove | 375 | 7,299 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14450-T-A | rupture disc above pressure plate | Tongue and groove | 450 | 6,971 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14454-T-A | rupture disc above pressure plate | Tongue and groove | 450 | 6,971 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14495-T-A | rupture disc above pressure plate | Tongue and groove | 495 | 8,615 | PRD202129 | Carbon Steel w/ SS trim | A-14000-T-A |
| A-14499-T-A | rupture disc above pressure plate | Tongue and groove | 495 | 8,615 | PRD202129 | Stainless Steel | A-14000-T-A |
| A-14227-ML-A | rupture disc above pressure plate | Tongue and groove | 210 | 4,629 | PRD212110 | SS, Hastelloy, Monel | A-1402-ML-A SERIES |
| A-14377-ML-A | rupture disc above pressure plate | Tongue and groove | 375 | 7,299 | PRD212110 | SS, Hastelloy, Monel | A-1402-ML-A SERIES |
| A-14502-ML-A | rupture disc above pressure plate | Tongue and groove | 470 | 8,816 | PRD212110 | SS, Hastelloy, Monel | A-1402-ML-A SERIES |
| A-14227C-ML | rupture disc above pressure plate | Tongue and groove | 225 | 4,367 | PRD202104 | SS, Hastelloy, Monel | A-1402-C Series |
| A-14377C-ML | rupture disc above pressure plate | Tongue and groove | 375 | 7,070 | PRD202104 | SS, Hastelloy, Monel | A-1402-C Series |
| A-14228-ML | ENHANCED FITTINGS - rupture disc within pressure plate | Tongue and groove | 225 | 4,829 | PRD2103 | SS, Hastelloy, Monel | A-1400-ML-A ENHANCED FITTING SERIES |
| A-14378-ML | ENHANCED FITTINGS - rupture disc within pressure plate | Tongue and groove | 375 | 7,299 | PRD2103 | SS, Hastelloy, Monel | A-1400-ML-A ENHANCED FITTING SERIES |
| A-14452-HC-A | rupture disc above pressure plate | Tongue and groove | 450 | 6,971 | PRD082004 | SS, Hastelloy, Monel | A-1400-HC SERIES |
| A-14497-HC-A | rupture disc above pressure plate | Tongue and groove | 495 | 8,616 | PRD082004 | SS, Hastelloy, Monel | A-1400-HC SERIES |
| A-15227-HC | rupture disc above pressure plate | Tongue and groove | 225 | 12,034 | PRD202128 | SS, Hastelloy, Monel | A-15227-HC |
| A-15241-HC | rupture disc above pressure plate | Tongue and groove | 239 | 12,740 | PRD202128 | SS, Hastelloy, Monel | A-15241-HC |
| A-15452-HC | rupture disc above pressure plate | Tongue and groove | 428 | 24,490 | PRD202128 | SS, Hastelloy, Monel | A-15242-HC |
| A-17225 | Top Style | Tongue and groove | 225 | 3250 | PRD202123 | Steel | A-1700 Drawing |
| A-17229 | Top Style | Tongue and groove | 225 | 3250 | PRD202123 | Stainless Steel | A-1700 Drawing |
| A-17375 | Top Style | Tongue and groove | 375 | 3646 | PRD202123 | Steel | A-1700 Drawing |
| A-17225-T | rupture disc above pressure plate | Tongue and groove | 225 | 3250 | PRD202124 | Steel | A-1700-T |
| A-17229-T | rupture disc above pressure plate | Tongue and groove | 225 | 3250 | PRD202124 | Stainless Steel | A-1700-T |
| A-17250-T-A | rupture disc above pressure plate | Tongue and groove | 250 | 3368 | PRD202124 | Steel | A-17250-T-A |
| A-17300-T | rupture disc above pressure plate | Tongue and groove | 300 | 4020 | PRD202124 | Steel | A-1700-T |
| A-19202-NIRD | Top style with frangible disc | Tongue and groove | 200 | 24,171 | Only Available for Replacement | Stainless Steel | A-19202-NIRD |
| A-19227 | Top style with frangible disc | Tongue and groove | 225 | 24,800 | Only Available for Replacement | Stainless Steel | A-1900 Series |
| A-19257 | Top style with frangible disc | Tongue and groove | 255 | 27,800 | Only Available for Replacement | Stainless Steel | A-1900 Series |
| A-19282 | Top style with frangible disc | Tongue and groove | 278 | 30,000 | Only Available for Replacement | Stainless Steel | A-1900 Series |
| A-19300 | Top style with frangible disc | Tongue and groove | 300 | 32,150 | Only Available for Replacement | Stainless Steel | A-1900 Series |
| A-19302 | Top style with frangible disc | Tongue and groove | 300 | 32,150 | Only Available for Replacement | Stainless Steel | Temporarily Unavailable |
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