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| Rated Pressure Chart | V-Series MIL-C-51234 (Unvalved Connected) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Body Size |
Steel Coupler/Plug | Brass Coupler/Plug | 316 Stainless Coupler/Plug | |||||||||
| Maximum Working | Burst | Maximum Working | Burst | Maximum Working | Burst | |||||||
| 1/4″ | 11,000 PSI | 760 bar | 29,500 PSI | 2,000 bar | 4,000 PSI | 275 bar | 14,200 PSI | 980 bar | 10,000 PSI | 670 bar | 29,200 PSI | 2,000 bar |
| 3/8″ | 11,000 PSI | 760 bar | 29,900 PSI | 2,000 bar | 4,000 PSI | 275 bar | 14,500 PSI | 1,000 bar | 8,000 PSI | 550 bar | 27,900 PSI | 1,900 bar |
| 1/2″ | 11,000 PSI | 760 bar | 29,300 PSI | 2,000 bar | 4,000 PSI | 275 bar | 14,500 PSI | 1,000 bar | 8,000 PSI | 550 bar | 24,600 PSI | 1,700 bar |
| 3/4″ | 9,000 PSI | 620 bar | 19,300 PSI | 1,300 bar | 3,500 PSI | 250 bar | 11,100 PSI | 750 bar | 7,000 PSI | 480 bar | 22,600 PSI | 1,500 bar |
| 1″ | 6,000 PSI | 400 bar | 15,900 PSI | 1,100 bar | 3,000 PSI | 200 bar | 8,200 PSI | 560 bar | 4,000 PSI | 275 bar | 15,500 PSI | 1,000 bar |
| 1-1/4″ | 5,000 PSI | 345 bar | 10,000 PSI | 700 bar | 1,000 PSI | 70 bar | 4,000 PSI | 275 bar | 3,000 PSI | 200 bar | 10,000 PSI | 700 bar |
| 1-1/2″ | 5,000 PSI | 345 bar | 10,000 PSI | 700 bar | 1,000 PSI | 70 bar | 4,000 PSI | 275 bar | 3,000 PSI | 200 bar | 10,000 PSI | 700 bar |
| 2″ | 4,000 PSI | 275 bar | 8,000 PSI | 550 bar | 750 PSI | 50 bar | 2,800 PSI | 190 bar | 1,000 PSI | 70 bar | 6,000 PSI | 400 bar |
Minimum burst pressure ratings were established under laboratory conditions using a Static Burst Unit (SBU). For high impulse applications and to meet Det Norske Veritas (DNV) compliance, the burst pressure must be divided by four (4) to ensure a 4:1 safety factor during system operation.
| V-Series | MIL-C-51234 Unvalved Coupler (Male Threads) | |||||||
|---|---|---|---|---|---|---|---|
| Part Number |
Coupling Type |
Body Size |
Threads | Material | Length | Max. OD |
Hex |
| 2VM2-E | Socket/Female | 1/4″ | 1/4″ – 18 Male NPTF | Steel | 1.82″ (46.2mm) |
0.99″ (25.1mm) |
5/8″ |
| 2VM2-B-E | Socket/Female | 1/4″ | 1/4″ – 18 Male NPTF | Brass | 1.82″ (46.2mm) |
0.99″ (25.1mm) |
5/8″ |
| 2VM2-SS-E | Socket/Female | 1/4″ | 1/4″ – 18 Male NPTF | 316 Stainless | 1.82″ (46.2mm) |
0.99″ (25.1mm) |
5/8″ |
| 3VM3-E | Socket/Female | 3/8″ | 3/8″ – 18 Male NPTF | Steel | 1.76″ (44.7mm) |
1.18″ (30.0mm) |
13/16″ |
| 3VM3-B-E | Socket/Female | 3/8″ | 3/8″ – 18 Male NPTF | Brass | 1.76″ (44.7mm) |
1.18″ (30.0mm) |
13/16″ |
| 3VM3-SS-E | Socket/Female | 3/8″ | 3/8″ – 18 Male NPTF | 316 Stainless | 1.76″ (44.7mm) |
1.18″ (30.0mm) |
13/16″ |
| 4VM4-E | Socket/Female | 1/2″ | 1/2″ – 14 Male NPTF | Steel | 2.03″ (51.6mm) |
1.37″ (34.8mm) |
1″ |
| 4VM4-B-E | Socket/Female | 1/2″ | 1/2″ – 14 Male NPTF | Brass | 2.03″ (51.6mm) |
1.37″ (34.8mm) |
1″ |
| 4VM4-SS-E | Socket/Female | 1/2″ | 1/2″ – 14 Male NPTF | 316 Stainless | 2.03″ (51.6mm) |
1.37″ (34.8mm) |
1″ |
| 6VM6-E | Socket/Female | 3/4″ | 3/4″ – 14 Male NPTF | Steel | 2.29″ (58.2mm) |
1.67″ (42.4mm) |
1-3/16″ |
| 6VM6-B-E | Socket/Female | 3/4″ | 3/4″ – 14 Male NPTF | Brass | 2.29″ (58.2mm) |
1.67″ (42.4mm) |
1-3/16″ |
| 6VM6-SS-E- | Socket/Female | 3/4″ | 3/4″ – 14 Male NPTF | 316 Stainless | 2.29″ (58.2mm) |
1.67″ (42.4mm) |
1-3/16″ |
| 8VM8-E | Socket/Female | 1″ | 1″ – 11-1/2 Male NPTF | Steel | 2.39″ (60.7mm) |
1.99″ (50.5mm) |
1-1/2″ |
| 8VM8-B-E | Socket/Female | 1″ | 1″ – 11-1/2 Male NPTF | Brass | 2.39″ (60.7mm) |
1.99″ (50.5mm) |
1-1/2″ |
| 8VM8-SS-E | Socket/Female | 1″ | 1″ – 11-1/2 Male NPTF | 316 Stainless | 2.39″ (60.7mm) |
1.99″ (50.5mm) |
1-1/2″ |
| 10VM10-E | Socket/Female | 1-1/4″ | 1-1/4″ – 11-1/2 Male NPTF | Steel | 2.78″ (70.6mm) |
2.19″ (55.6mm) |
1-7/8″ |
| 10VM10-SS-E | Socket/Female | 1-1/4″ | 1-1/4″ – 11-1/2 Male NPTF | 316 Stainless | 2.78″ (70.6mm) |
2.19″ (55.6mm) |
1-7/8″ |
| 12VM12-E | Socket/Female | 1-1/2″ | 1-1/2″ – 11-1/2 Male NPTF | Steel | 3.08″ (78.2mm) |
2.74″ (69.6mm) |
2-1/8″ |
| 12VM12-SS-E | Socket/Female | 1-1/2″ | 1-1/2″ – 11-1/2 Male NPTF | 316 Stainless | 3.08″ (78.2mm) |
2.74″ (69.6mm) |
2-1/8″ |
| 16VM16-E | Socket/Female | 2″ | 2″ – 11-1/2 Male NPTF | Steel | 3.10″ (78.7mm) |
3.56″ (90.4mm) |
2-1/2″ |
| 16VM16-SS-E | Socket/Female | 2″ | 2″ – 11-1/2 Male NPTF | 316 Stainless | 3.10″ (78.7mm) |
3.56″ (90.4mm) |
2-1/2″ |
| V-Series | MIL-C-51234 Unvalved Plug (Male Threads) | |||||||
|---|---|---|---|---|---|---|---|
| Part Number |
Coupling Type |
Body Size |
Threads | Material | Length | Max. OD |
Hex |
| V2M2-E | Plug/Male | 1/4″ | 1/4″ – 18 Male NPTF | Steel | 1.52″ (38.6mm) |
0.69″ (17.5mm) |
5/8″ |
| V2M2-B-E | Plug/Male | 1/4″ | 1/4″ – 18 Male NPTF | Brass | 1.52″ (38.6mm) |
0.69″ (17.5mm) |
5/8″ |
| V2M2-SS-E | Plug/Male | 1/4″ | 1/4″ – 18 Male NPTF | 316 Stainless | 1.52″ (38.6mm) |
0.69″ (17.5mm) |
5/8″ |
| V3M3-E | Plug/Male | 3/8″ | 3/8″ – 18 Male NPTF | Steel | 1.72″ (43.7mm) |
0.90″ (22.9mm) |
13/16″ |
| V3M3-B-E | Plug/Male | 3/8″ | 3/8″ – 18 Male NPTF | Brass | 1.72″ (43.7mm) |
0.90″ (22.9mm) |
13/16″ |
| V3M3-SS-E | Plug/Male | 3/8″ | 3/8″ – 18 Male NPTF | 316 Stainless | 1.72″ (43.7mm) |
0.90″ (22.9mm) |
13/16″ |
| V4M4-E | Plug/Male | 1/2″ | 1/2″ – 14 Male NPTF | Steel | 1.80″ (45.7mm) |
1.10″ (27.9mm) |
1″ |
| V4M4-B-E | Plug/Male | 1/2″ | 1/2″ – 14 Male NPTF | Brass | 1.80″ (45.7mm) |
1.10″ (27.9mm) |
1″ |
| V4M4-SS-E | Plug/Male | 1/2″ | 1/2″ – 14 Male NPTF | 316 Stainless | 1.80″ (45.7mm) |
1.10″ (27.9mm) |
1″ |
| V6M6-E | Plug/Male | 3/4″ | 3/4″ – 14 Male NPTF | Steel | 2.19″ (55.6mm) |
1.31″ (33.3mm) |
1-3/16″ |
| V6M6-B-E | Plug/Male | 3/4″ | 3/4″ – 14 Male NPTF | Brass | 2.19″ (55.6mm) |
1.31″ (33.3mm) |
1-3/16″ |
| V6M6-SS-E | Plug/Male | 3/4″ | 3/4″ – 14 Male NPTF | 316 Stainless | 2.19″ (55.6mm) |
1.31″ (33.3mm) |
1-3/16″ |
| V8M8-E | Plug/Male | 1″ | 1″ – 11-1/2 Male NPTF | Steel | 2.31″ (58.7mm) |
1.65″ (41.9mm) |
1-1/2″ |
| V8M8-B-E | Plug/Male | 1″ | 1″ – 11-1/2 Male NPTF | Brass | 2.31″ (58.7mm) |
1.65″ (41.9mm) |
1-1/2″ |
| V8M8-SS-E | Plug/Male | 1″ | 1″ – 11-1/2 Male NPTF | 316 Stainless | 2.31″ (58.7mm) |
1.65″ (41.9mm) |
1-1/2″ |
| V10M10-E | Plug/Male | 1-1/4″ | 1-1/4″ – 11-1/2 Male NPTF | Steel | 2.14″ (54.4mm) |
2.06″ (52.3mm) |
1-7/8″ |
| 10VM10-SS-E | Plug/Male | 1-1/4″ | 1-1/4″ – 11-1/2 Male NPTF | 316 Stainless | 2.14″ (54.4mm) |
2.06″ (52.3mm) |
1-7/8″ |
| V12M12-E | Plug/Male | 1-1/2″ | 1-1/2″ – 11-1/2 Male NPTF | Steel | 2.34″ (59.4mm) |
2.33″ (59.2mm) |
2-1/8″ |
| V12M12-SS-E | Plug/Male | 1-1/2″ | 1-1/2″ – 11-1/2 Male NPTF | 316 Stainless | 2.34″ (59.4mm) |
2.33″ (59.2mm) |
2-1/8″ |
| V16M16-E | Plug/Male | 2″ | 2″ – 11-1/2 Male NPTF | Steel | 3.06″ (77.7mm) |
2.74″ (69.6mm) |
2-1/2″ |
| V16M16-SS-E | Plug/Male | 2″ | 2″ – 11-1/2 Male NPTF | 316 Stainless | 3.06″ (77.7mm) |
2.74″ (69.6mm) |
2-1/2″ |






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