Ralston NPT Male Quick-test Adapters
Male NPT to Quick-test adapters for connecting transmitters and process ports to Quick-test hoses — brass or stainless, with or without check valve
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
Male NPT Ralston Quick-test adapters connect female NPT test points on transmitters, gauges, and process equipment to Quick-test hoses — leak-free connect/disconnect without a wrench on the hose end.
- Brass or stainless steel
- With or without check valve
- Working pressure up to 5,000 psi on no-check models (check-valve models typically 3,000 psi)
- Made in USA
Shipping and tax are confirmed when we review your order.
OEM family: NPT Male Quick-test Adapters (https://www.ralstoninst.com/npt-male-quick-test-adapters).
Specifications
| Family | NPT Male Quick-test Adapters |
| Process connection | Male NPT (ASME B1.20.1) |
| Hose connection | Male Quick-test |
| Max pressure | Up to 5,000 psi (no check valve) / 3,000 psi (with check valve) |
| Materials | Brass or stainless steel |
| Country of origin | USA |
Build your part number
Configure your QTHA
Pick your options and we'll build the exact part number with a list-price estimate.
Select a model to build your part number.
Choose NPT size, material, and check valve. These adapters thread into female NPT process ports. Shipping and tax are confirmed when we review your order.
Ordering information
19 ordering models available.
| Model | Description | List Price | |
|---|---|---|---|
| QTHA-0.5MB0 | 1/16" male NPT x male Quick-test, no check-valve, brass | $19.49 | |
| QTHA-1MB0 | 1/8" male NPT x male Quick-test, no check-valve, brass | $14.28 | |
| QTHA-1MB1 | 1/8" male NPT x male Quick-test, with check-valve, brass | $20.09 | |
| QTHA-1MS0 | 1/8" male NPT x male Quick-test, no check-valve, S.S. | $29.01 | |
| QTHA-1MS1 | 1/8" male NPT x male Quick-test, with check-valve, S.S. | $47.09 | |
| QTHA-2MB0 | 1/4" male NPT x male Quick-test, no check-valve, brass | $13.15 | |
| QTHA-2MB1 | 1/4" male NPT x male Quick-test, with check-valve, brass | $19.87 | |
| QTHA-2MS0 | 1/4" male NPT x male Quick-test, no check-valve, S.S. | $25.95 | |
| QTHA-2MS1 | 1/4" male NPT x male Quick-test, with check-valve, S.S. | $38.26 | |
| QTHA-3MB0 | 3/8" male NPT x male Quick-test, no check-valve, brass | $26.75 | |
| QTHA-3MB1 | 3/8" male NPT x male Quick-test, with check-valve, brass | $35.00 | |
| QTHA-3MS0 | 3/8" male NPT x male Quick-test, no check-valve, S.S. | $45.02 | |
| QTHA-3MS1 | 3/8" male NPT x male Quick-test, with check-valve, S.S. | $60.44 | |
| QTHA-4MB0 | 1/2" male NPT x male Quick-test, no check-valve, brass | $25.82 | |
| QTHA-4MB1 | 1/2" male NPT x male Quick-test, with check-valve, brass | $32.33 | |
| QTHA-4MS0 | 1/2" male NPT x male Quick-test, no check-valve, S.S. | $50.01 | |
| QTHA-4MS1 | 1/2" male NPT x male Quick-test, with check-valve, S.S. | $64.26 | |
| QTHA-6MB0 | 3/4" male NPT x male Quick-test, no check-valve, brass | $66.40 | |
| QTHA-6MB1 | 3/4" male NPT X male Quick-test, with check-valve, brass | $73.83 |
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