Ralston NPT Male Quick-connect Adapters
Make a bubble-tight seal on any female NPT pressure device without using thread sealant or a wrench — pressure-assisted o-ring Quick-connect x male Quick-test
Pick your exact configuration in the ordering table below to add it to your cart.
Same-day response on quotes. ISO/IEC 17025 accredited calibration available.
Overview
NPT Male Quick-connect adapters make a bubble-tight seal on female NPT pressure devices without thread sealant or a wrench. A pressure-assisted o-ring seal improves as pressure rises; the hose end is male Quick-test.
- Unique design seals standard female NPT ports with a pressure-assisted o-ring
- Pressure helps seal the fitting better
- Stainless steel construction
- Working pressure up to 5,000 psi
- Made in USA
Shipping and tax are confirmed when we review your order.
OEM family: NPT Male Quick-connect Adapters (https://www.ralstoninst.com/npt-male-quick-connect-adapters).
Specifications
| Family | NPT Male Quick-connect Adapters |
| Process connection | Male NPT Quick-connect (ASME B1.20.1) |
| Hose connection | Male Quick-test |
| Max pressure | 5,000 psi / 350 bar / 35 MPa |
| Materials | Stainless steel |
| Country of origin | USA |
Videos
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Choose NPT size. These Quick-connect adapters seal into female NPT ports with a pressure-assisted o-ring — no thread sealant or wrench on the process side. Shipping and tax are confirmed when we review your order.
Ordering information
4 ordering models available.
| Model | Description | List Price | |
|---|---|---|---|
| QTHA-1MS0-QD | 1/8" male NPT QD (Quick-connect) Adapter, S.S. | $78.94 | |
| QTHA-2MS0-QD | 1/4" male NPT QD (Quick-connect) Adapter, S.S. | $83.53 | |
| QTHA-3MS0-QD | 3/8" Male NPT Quick-connect x Male Quick-test, S.S. | $114.21 | |
| QTHA-4MS0-QD | 1/2" Male NPT Quick-connect x male Quick-test, S.S. | $102.03 |
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