| Compatibility & Interchange: |
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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 (Female Threads) | |||||||
|---|---|---|---|---|---|---|---|
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| Part Number |
Coupling Type |
Body Size |
Threads | Material | Length | Max. OD |
Hex |
| 2VF2-E | Socket/Female | 1/4″ | 1/4″ – 18 Female NPTF | Steel | 1.36″ (34.5mm) |
0.99″ (25.1mm) |
7/8″ |
| 2VF2-B-E | Socket/Female | 1/4″ | 1/4″ – 18 Female NPTF | Brass | 1.36″ (34.5mm) |
0.99″ (25.1mm) |
7/8″ |
| 2VF2-SS-E | Socket/Female | 1/4″ | 1/4″ – 18 Female NPTF | 316 Stainless | 1.36″ (34.5mm) |
0.99″ (25.1mm) |
7/8″ |
| 2VBF2-E | Socket/Female | 1/4″ | 1/4″ – 19 Female BSPP | Steel | 1.36″ (34.5mm) |
0.99″ (25.1mm) |
7/8″ |
| 2VBF2-B-E | Socket/Female | 1/4″ | 1/4″ – 19 Female BSPP | Brass | 1.36″ (34.5mm) |
0.99″ (25.1mm) |
7/8″ |
| 2VBF2-SS-E | Socket/Female | 1/4″ | 1/4″ – 19 Female BSPP | 316 Stainless | 1.36″ (34.5mm) |
0.99″ (25.1mm) |
7/8″ |
| 3VF3-E | Socket/Female | 3/8″ | 3/8″ – 18 Female NPTF | Steel | 1.50″ (38.1mm) |
1.18″ (30.0mm) |
7/8″ |
| 3VF3-B-E | Socket/Female | 3/8″ | 3/8″ – 18 Female NPTF | Brass | 1.50″ (38.1mm) |
1.18″ (30.0mm) |
7/8″ |
| 3VF3-SS-E | Socket/Female | 3/8″ | 3/8″ – 18 Female NPTF | 316 Stainless | 1.50″ (38.1mm) |
1.18″ (30.0mm) |
7/8″ |
| 3VBF3-E | Socket/Female | 3/8″ | 3/8″ – 19 Female BSPP | Steel | 1.50″ (38.1mm) |
1.18″ (30.0mm) |
7/8″ |
| 3VBF3-B-E | Socket/Female | 3/8″ | 3/8″ – 19 Female BSPP | Brass | 1.50″ (38.1mm) |
1.18″ (30.0mm) |
7/8″ |
| 3VBF3-SS-E | Socket/Female | 3/8″ | 3/8″ – 19 Female BSPP | 316 Stainless | 1.50″ (38.1mm) |
1.18″ (30.0mm) |
7/8″ |
| 4VF4-E | Socket/Female | 1/2″ | 1/2″ – 14 Female NPTF | Steel | 1.64″ (41.7mm) |
1.37″ (34.8mm) |
1-3/16″ |
| 4VF4-B-E | Socket/Female | 1/2″ | 1/2″ – 14 Female NPTF | Brass | 1.64″ (41.7mm) |
1.37″ (34.8mm) |
1-3/16″ |
| 4VF4-SS-E | Socket/Female | 1/2″ | 1/2″ – 14 Female NPTF | 316 Stainless | 1.64″ (41.7mm) |
1.37″ (34.8mm) |
1-3/16″ |
| 4VBF4-E | Socket/Female | 1/2″ | 1/2″ – 14 Female BSPP | Steel | 1.64″ (41.7mm) |
1.37″ (34.8mm) |
1-3/16″ |
| 4VBF4-B-E | Socket/Female | 1/2″ | 1/2″ – 14 Female BSPP | Brass | 1.64″ (41.7mm) |
1.37″ (34.8mm) |
1-3/16″ |
| 4VBF4-SS-E | Socket/Female | 1/2″ | 1/2″ – 14 Female BSPP | 316 Stainless | 1.64″ (41.7mm) |
1.37″ (34.8mm) |
1-3/16″ |
| 6VF6-E | Socket/Female | 3/4″ | 3/4″ – 14 Female NPTF | Steel | 1.96″ (49.8mm) |
1.67″ (42.4mm) |
1-1/2″ |
| 6VF6-B-E | Socket/Female | 3/4″ | 3/4″ – 14 Female NPTF | Brass | 1.96″ (49.8mm) |
1.67″ (42.4mm) |
1-1/2″ |
| 6VF6-SS-E | Socket/Female | 3/4″ | 3/4″ – 14 Female NPTF | 316 Stainless | 1.96″ (49.8mm) |
1.67″ (42.4mm) |
1-1/2″ |
| 6VBF6-E | Socket/Female | 3/4″ | 3/4″ – 14 Female BSPP | Steel | 1.96″ (49.8mm) |
1.67″ (42.4mm) |
1-1/2″ |
| 6VBF6-B-E | Socket/Female | 3/4″ | 3/4″ – 14 Female BSPP | Brass | 1.96″ (49.8mm) |
1.67″ (42.4mm) |
1-1/2″ |
| 6VBF6-SS-E | Socket/Female | 3/4″ | 3/4″ – 14 Female BSPP | 316 Stainless | 1.96″ (49.8mm) |
1.67″ (42.4mm) |
1-1/2″ |
| 8VF8-E | Socket/Female | 1″ | 1″ – 11-1/2 Female NPTF | Steel | 2.10″ (53.3mm) |
1.99″ (50.5mm) |
1-13/16″ |
| 8VF8-B-E | Socket/Female | 1″ | 1″ – 11-1/2 Female NPTF | Brass | 2.10″ (53.3mm) |
1.99″ (50.5mm) |
1-13/16″ |
| 8VF8-SS-E | Socket/Female | 1″ | 1″ – 11-1/2 Female NPTF | 316 Stainless | 2.10″ (53.3mm) |
1.99″ (50.5mm) |
1-13/16″ |
| 8VBF8-E | Socket/Female | 1″ | 1″ – 11 Female BSPP | Steel | 2.10″ (53.3mm) |
1.99″ (50.5mm) |
1-13/16″ |
| 8VBF8-B-E | Socket/Female | 1″ | 1″ – 11 Female BSPP | Brass | 2.10″ (53.3mm) |
1.99″ (50.5mm) |
1-13/16″ |
| 8VBF8-SS-E | Socket/Female | 1″ | 1″ – 11 Female BSPP | 316 Stainless | 2.10″ (53.3mm) |
1.99″ (50.5mm) |
1-13/16″ |
| 10VF10-E | Socket/Female | 1-1/4″ | 1-1/4″ – 11-1/2 Female NPTF | Steel | 2.28″ (57.9mm) |
2.19″ (55.6mm) |
2″ |
| 10VF10-B-E | Socket/Female | 1-1/4″ | 1-1/4″ – 11-1/2 Female NPTF | Brass | 2.28″ (57.9mm) |
2.19″ (55.6mm) |
2″ |
| 10VF10-SS-E | Socket/Female | 1-1/4″ | 1-1/4″ – 11-1/2 Female NPTF | 316 Stainless | 2.28″ (57.9mm) |
2.19″ (55.6mm) |
2″ |
| 10VBF10-E | Socket/Female | 1-1/4″ | 1-1/4″ – 11 Female BSPP | Steel | 2.28″ (57.9mm) |
2.19″ (55.6mm) |
2″ |
| 10VBF10-B-E | Socket/Female | 1-1/4″ | 1-1/4″ – 11 Female BSPP | Brass | 2.28″ (57.9mm) |
2.19″ (55.6mm) |
2″ |
| 10VBF10-SS-E | Socket/Female | 1-1/4″ | 1-1/4″ – 11 Female BSPP | 316 Stainless | 2.28″ (57.9mm) |
2.19″ (55.6mm) |
2″ |
| 12VF12-E | Socket/Female | 1-1/2″ | 1-1/2″ – 11-1/2 Female NPTF | Steel | 2.57″ (65.3mm) |
2.74″ (69.6mm) |
2-1/2″ |
| 12VF12-B-E | Socket/Female | 1-1/2″ | 1-1/2″ – 11-1/2 Female NPTF | Brass | 2.57″ (65.3mm) |
2.74″ (69.6mm) |
2-1/2″ |
| 12VF12-SS-E | Socket/Female | 1-1/2″ | 1-1/2″ – 11-1/2 Female NPTF | 316 Stainless | 2.57″ (65.3mm) |
2.74″ (69.6mm) |
2-1/2″ |
| 16VF16-E | Socket/Female | 2″ | 2″ – 11-1/2 Female NPTF | Steel | 2.48″ (63.0mm) |
3.56″ (90.4mm) |
3-1/4″ |
| 16VF16-B-E | Socket/Female | 2″ | 2″ – 11-1/2 Female NPTF | Brass | 2.48″ (63.0mm) |
3.56″ (90.4mm) |
3-1/4″ |
| 16VF16-SS-E | Socket/Female | 2″ | 2″ – 11-1/2 Female NPTF | 316 Stainless | 2.48″ (63.0mm) |
3.56″ (90.4mm) |
3-1/4″ |
| V-Series | MIL-C-51234 Unvalved Plug (Female Threads) | |||||||
|---|---|---|---|---|---|---|---|
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|||||||
| Part Number |
Coupling Type |
Body Size |
Threads | Material | Length | Max. OD |
Hex |
| V2F2-E | Plug/Male | 1/4″ | 1/4″ – 18 Female NPTF | Steel | 1.27″ (32.3mm) |
0.69″ (17.5mm) |
5/8″ |
| V2F2-B-E | Plug/Male | 1/4″ | 1/4″ – 18 Female NPTF | Brass | 1.27″ (32.3mm) |
0.69″ (17.5mm) |
5/8″ |
| V2F2-SS-E | Plug/Male | 1/4″ | 1/4″ – 18 Female NPTF | 316 Stainless | 1.27″ (32.3mm) |
0.69″ (17.5mm) |
5/8″ |
| V2BF2-E | Plug/Male | 1/4″ | 1/4″ – 19 Female BSPP | Steel | 1.27″ (32.3mm) |
0.69″ (17.5mm) |
5/8″ |
| V2BF2-B-E | Plug/Male | 1/4″ | 1/4″ – 19 Female BSPP | Brass | 1.27″ (32.3mm) |
0.69″ (17.5mm) |
5/8″ |
| V2BF2-SS-E | Plug/Male | 1/4″ | 1/4″ – 19 Female BSPP | 316 Stainless | 1.27″ (32.3mm) |
0.69″ (17.5mm) |
5/8″ |
| V3F3-E | Plug/Male | 3/8″ | 3/8″ – 18 Female NPTF | Steel | 1.41″ (35.8mm) |
0.90″ (22.9mm) |
13/16″ |
| V3F3-B-E | Plug/Male | 3/8″ | 3/8″ – 18 Female NPTF | Brass | 1.41″ (35.8mm) |
0.90″ (22.9mm) |
13/16″ |
| V3F3-SS-E | Plug/Male | 3/8″ | 3/8″ – 18 Female NPTF | 316 Stainless | 1.41″ (35.8mm) |
0.90″ (22.9mm) |
13/16″ |
| V3BF3-E | Plug/Male | 3/8″ | 3/8″ – 19 Female BSPP | Steel | 1.41″ (35.8mm) |
0.90″ (22.9mm) |
13/16″ |
| V3BF3-B-E | Plug/Male | 3/8″ | 3/8″ – 19 Female BSPP | Brass | 1.41″ (35.8mm) |
0.90″ (22.9mm) |
13/16″ |
| V3BF3-SS-E | Plug/Male | 3/8″ | 3/8″ – 19 Female BSPP | 316 Stainless | 1.41″ (35.8mm) |
0.90″ (22.9mm) |
13/16″ |
| V4F4-E | Plug/Male | 1/2″ | 1/2″ – 14 Female NPTF | Steel | 1.72″ (43.7mm) |
1.10″ (27.9mm) |
1″ |
| V4F4-B-E | Plug/Male | 1/2″ | 1/2″ – 14 Female NPTF | Brass | 1.72″ (43.7mm) |
1.10″ (27.9mm) |
1″ |
| V4F4-SS-E | Plug/Male | 1/2″ | 1/2″ – 14 Female NPTF | 316 Stainless | 1.72″ (43.7mm) |
1.10″ (27.9mm) |
1″ |
| V4BF4-E | Plug/Male | 1/2″ | 1/2″ – 14 Female BSPP | Steel | 1.72″ (43.7mm) |
1.10″ (27.9mm) |
1″ |
| V4BF4-B-E | Plug/Male | 1/2″ | 1/2″ – 14 Female BSPP | Brass | 1.72″ (43.7mm) |
1.10″ (27.9mm) |
1″ |
| V4BF4-SS-E | Plug/Male | 1/2″ | 1/2″ – 14 Female BSPP | 316 Stainless | 1.72″ (43.7mm) |
1.10″ (27.9mm) |
1″ |
| V6F6-E | Plug/Male | 3/4″ | 3/4″ – 14 Female NPTF | Steel | 1.86″ (47.2mm) |
1.31″ (33.3mm) |
1-3/16″ |
| V6F6-B-E | Plug/Male | 3/4″ | 3/4″ – 14 Female NPTF | Brass | 1.86″ (47.2mm) |
1.31″ (33.3mm) |
1-3/16″ |
| V6F6-SS-E | Plug/Male | 3/4″ | 3/4″ – 14 Female NPTF | 316 Stainless | 1.86″ (47.2mm) |
1.31″ (33.3mm) |
1-3/16″ |
| V6BF6-E | Plug/Male | 3/4″ | 3/4″ – 14 Female BSPP | Steel | 1.86″ (47.2mm) |
1.31″ (33.3mm) |
1-3/16″ |
| V6BF6-B-E | Plug/Male | 3/4″ | 3/4″ – 14 Female BSPP | Brass | 1.86″ (47.2mm) |
1.31″ (33.3mm) |
1-3/16″ |
| V6BF6-SS-E | Plug/Male | 3/4″ | 3/4″ – 14 Female BSPP | 316 Stainless | 1.86″ (47.2mm) |
1.31″ (33.3mm) |
1-3/16″ |
| V8F8-E | Plug/Male | 1″ | 1″ – 11-1/2 Female NPTF | Steel | 2.08″ (52.8mm) |
1.65″ (41.9mm) |
1-1/2″ |
| V8F8-B-E | Plug/Male | 1″ | 1″ – 11-1/2 Female NPTF | Brass | 2.08″ (52.8mm) |
1.65″ (41.9mm) |
1-1/2″ |
| V8F8-SS-E | Plug/Male | 1″ | 1″ – 11-1/2 Female NPTF | 316 Stainless | 2.08″ (52.8mm) |
1.65″ (41.9mm) |
1-1/2″ |
| V8BF8-E | Plug/Male | 1″ | 1″ – 11 Female BSPP | Steel | 2.08″ (52.8mm) |
1.65″ (41.9mm) |
1-1/2″ |
| V8BF8-B-E | Plug/Male | 1″ | 1″ – 11 Female BSPP | Brass | 2.08″ (52.8mm) |
1.65″ (41.9mm) |
1-1/2″ |
| V8BF8-SS-E | Plug/Male | 1″ | 1″ – 11 Female BSPP | 316 Stainless | 2.08″ (52.8mm) |
1.65″ (41.9mm) |
1-1/2″ |
| V10F10-E | Plug/Male | 1-1/4″ | 1-1/4″ – 11-1/2 Female NPTF | Steel | 2.22″ (56.4mm) |
2.06″ (52.3mm) |
1-7/8″ |
| V10F10-B-E | Plug/Male | 1-1/4″ | 1-1/4″ – 11-1/2 Female NPTF | Brass | 2.22″ (56.4mm) |
2.06″ (52.3mm) |
1-7/8″ |
| V10F10-SS-E | Plug/Male | 1-1/4″ | 1-1/4″ – 11-1/2 Female NPTF | 316 Stainless | 2.22″ (56.4mm) |
2.06″ (52.3mm) |
1-7/8″ |
| V10BF10-E | Plug/Male | 1-1/4″ | 1-1/4″ – 11 Female BSPP | Steel | 2.22″ (56.4mm) |
2.06″ (52.3mm) |
1-7/8″ |
| V10BF10-B-E | Plug/Male | 1-1/4″ | 1-1/4″ – 11 Female BSPP | Brass | 2.22″ (56.4mm) |
2.06″ (52.3mm) |
1-7/8″ |
| V10BF10-SS-E | Plug/Male | 1-1/4″ | 1-1/4″ – 11 Female BSPP | 316 Stainless | 2.22″ (56.4mm) |
2.06″ (52.3mm) |
1-7/8″ |
| V12F12-E | Plug/Male | 1-1/2″ | 1-1/2″ – 11-1/2 Female NPTF | Steel | 2.44″ (62.0mm) |
2.33″ (59.2mm) |
2-1/8″ |
| V12F12-B-E | Plug/Male | 1-1/2″ | 1-1/2″ – 11-1/2 Female NPTF | Brass | 2.44″ (62.0mm) |
2.33″ (59.2mm) |
2-1/8″ |
| V12F12-SS-E | Plug/Male | 1-1/2″ | 1-1/2″ – 11-1/2 Female NPTF | 316 Stainless | 2.44″ (62.0mm) |
2.33″ (59.2mm) |
2-1/8″ |
| V16F16-E | Plug/Male | 2″ | 2″ – 11-1/2 Female NPTF | Steel | 2.60″ (66.0mm) |
3.01″ (76.5mm) |
2-3/4″ |
| V16F16-B-E | Plug/Male | 2″ | 2″ – 11-1/2 Female NPTF | Brass | 2.60″ (66.0mm) |
3.01″ (76.5mm) |
2-3/4″ |
| V16F16-SS-E | Plug/Male | 2″ | 2″ – 11-1/2 Female NPTF | 316 Stainless | 2.60″ (66.0mm) |
3.01″ (76.5mm) |
2-3/4″ |







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