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Series A
(Pneumatic Coupler)
1/4" Body Size • Maximum 300 PSI
This is an extremely versatile industrial interchange coupler that can be machined with a variety of alternative adapters. Conform to A-A59439 (formerly mil spec C-4109F) standards.
Click on any of the part numbers to request a quote.
Sockets (Valved)
Only connect with one way or two way valved sockets.
| FNPT | Thread | Standard | Brass | Electroless Nickel |
Stainless Steel |
Automatic Q Series |
Safety Exhaust |
Sleeve Guard |
 |
1/8" | FA1 | FA1-B | FA1-EN | FA1-SS | FA1-Q | N/A | FA1-SG |
| 1/4" | FA2 | FA2-B | FA2-EN | FA2-SS | FA2-Q | SVFA2 | FA2-SG | |
| 3/8" | FA3 | FA3-B | FA3-EN | FA3-SS | FA3-Q | SVFA3 | FA3-SG |
| MNPT | Thread | Standard | Brass | Electroless Nickel |
Stainless Steel |
Automatic Q Series |
Safety Exhaust |
Sleeve Guard |
 |
1/8" | MA1 | MA1-B | MA1-EN | MA1-SS | MA1-Q | N/A | MA1-SG |
| 1/4" | MA2 | MA2-B | MA2-EN | MA2-SS | MA2-Q | SVMA2 | MA2-SG | |
| 3/8" | MA3 | MA3-B | MA3-EN | MA3-SS | MA3-Q | SVMA3 | MA3-SG |
| HOSE BARB | Hose I.D. | Standard | Brass | Electroless Nickel |
Stainless Steel |
Automatic Q Series |
Safety Exhaust |
Sleeve Guard |
 |
1/4" | SA2 | SA2-B | SA2-EN | SA2-SS | SA2-Q | SVSA2 | SA2-SG |
| 5/16" | SA25 | SA25-B | SA25-EN | SA25-SS | SA25-Q | N/A | SA25-SG | |
| 3/8" | SA3 | SA3-B | SA3-EN | SA3-SS | SA3-Q | SVSA3 | SA3-SG |
| PL HOSE BARB | Hose I.D. | Standard | Brass | Electroless Nickel |
Stainless Steel |
Automatic Q Series |
Safety Exhaust |
Sleeve Guard |
 |
1/4" | SA2-PL | SA2-B-PL | SA2-EN-PL | SA2-SS-PL | SA2-Q-PL | N/A | SA2-SG-PL |
| 3/8" | SA3-PL | SA3-B-PL | SA3-EN-PL | SA3-SS-PL | SA3-Q-PL | N/A | SA3-SG-PL |
| REUSABLE | Reusable Hose End |
Standard | Brass | Electroless Nickel |
Stainless Steel |
Automatic Q Series |
 |
3/16" x 3/8" | RKA1 | RKA1-B | RKA1-EN | RKA1-SS | RKA1-Q |
| 1/4" x 7/16" | RKA21 | RKA21-B | RKA21-EN | RKA21-SS | RKA21-Q | |
| 1/4" x 15/32" | N/A | N/A | N/A | RKA22-SS | N/A | |
| 1/4" x 1/2" | RKA2 | RKA2-B | RKA2-EN | RKA2-SS | RKA2-Q | |
| 1/4" x 9/16" | RKA15 | RKA15-B | RKA15-EN | RKA15-SS | RKA15-Q | |
| 1/4" x 5/8" | RKA27 | RKA27-B | RKA27-EN | RKA27-SS | RKA27-Q | |
| 5/16" x 5/8 | RKA25 | RKA25-B | RKA25-EN | RKA25-SS | RKA25-Q | |
| 3/8" x 5/8 | RKA37 | RKA37-B | RKA37-EN | RKA37-SS | RKA37-Q | |
| 3/8" x 11/16 | RKA38 | RKA38-B | RKA38-EN | RKA38-SS | RKA38-Q | |
| 3/8" x 3/4 | RKA3 | RKA3-B | RKA3-EN | RKA3-SS | RKA3-Q |
Plugs (Unvalved)
| FNPT | Thread | Standard | Brass | Electroless Nickel |
Stainless Steel |
 |
1/8" | FPA1 | FPA1-B | FPA1-EN | FPA1-SS |
| 1/4" | FPA2 | FPA2-B | FPA2-EN | FPA2-SS | |
| 3/8" | FPA3 | N/A | N/A | FPA3-SS |
| MNPT | Thread | Standard | Brass | Electroless Nickel |
Stainless Steel |
 |
1/8" | MPA1 | MPA1-B | MPA1-EN | MPA1-SS |
| 1/4" | MPA2 | MPA2-B | MPA2-EN | MPA2-SS | |
| 3/8" | MPA3 | MPA3-B | MPA3-EN | MPA3-SS |
| HOSE BARB | Hose I.D. | Standard | Brass | Electroless Nickel |
Stainless Steel |
 |
1/4" | SPA2 | SPA2-B | SPA2-EN | SPA2-SS |
| 5/16" | SPA25 | N/A | N/A | N/A | |
| 3/8" | SPA3 | SPA3-B | SPA3-EN | SPA3-SS |
| PL HOSE BARB | Hose I.D. | Standard | Brass | Electroless Nickel |
Stainless Steel |
 |
1/4" | SPA2-PL | SPA2-B-PL | SPA2-EN-PL | SPA2-SS-PL |
| 5/16" | N/A | N/A | N/A | N/A | |
| 3/8" | SPA3-PL | SPA3-B-PL | SPA3-EN-PL | SPA3-SS-PL |
| REUSABLE | Reusable Hose End |
Standard | Brass | Electroless Nickel |
Stainless Steel |
 |
3/16" x 3/8" | PA1 | PA1-B | PA1-EN | PA1-SS |
| 1/4" x 7/16" | PA21 | PA21-B | PA21-EN | PA21-SS | |
| 1/4" x 15/32" | N/A | N/A | N/A | PA22-SS | |
| 1/4" x 1/2" | PA2 | PA2-B | PA2-EN | PA2-SS | |
| 1/4" x 9/16" | PA15 | PA15-B | PA15-EN | PA15-SS | |
| 1/4" x 5/8" | PA27 | PA27-B | PA27-EN | PA27-SS | |
| 5/16" x 5/8 | PA25 | PA25-B | PA25-EN | PA25-SS | |
| 3/8" x 5/8 | PA37 | PA37-B | PA37-EN | PA37-SS | |
| 3/8" x 11/16 | PA38 | PA38-B | PA38-EN | PA38-SS | |
| 3/8" x 3/4 | PA3 | PA3-B | PA3-EN | PA3-SS |
Performance Flow Data
| AIR FLOW – CFM | WATER FLOW | |||||
| 100 PSIG | 80 PSIG | GPM – 60 PSIG | ||||
| Pressure Drop | Pressure Drop | |||||
| 10 PSIG | 5 PSIG | 10 PSIG | 5 PSIG | 10 PSIG | 5 PSIG | |
| Series A | 36 | 26 | 33 | 24 | 3.7 | 2.5 |
| Series B | 68 | 50 | 62 | 45 | 6.8 | 5 |
| Series C | 118 | 90 | 107 | 82 | 11 | 8 |
| Series D | 190 | 135 | 172 | 122 | 22 | 16 |
Socket Construction |
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Standard |
Brass |
Sleeve Guard |
Electroless Nickel Plated |
Stainless |
Automatic Q Series |
Safety Exhaust |
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Plug Construction |
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Standard |
Brass |
Electroless Nickel Plate |
Stainless |
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