Overview Ralston NPT Male Quick-test Adapters QTHA-2MB0
Connects Female NPT to Quick-test hoses with brass or stainless steel hose ends.
- Ideal for connecting to pressure transmitters or other devices under test using thread sealant
- Quickly connect and disconnect Quick-test hoses for testing, calibrating and sampling
- Made in USA

Model | Max Pressure | End 1 Connector | End 2 Connector | Check Valve | Cap and Chain | Materials |
QTHA-0.5MB0 | 5000 PSI / 350 bar / 35 MPa | 1/16″ Male NPT (ASME B1.20.1) | Male Quick-test | No | No | Brass |
QTHA-1MB0 | 5000 PSI / 350 bar / 35 MPa | 1/8″ Male NPT (ASME B1.20.1) | Male Quick-test | No | No | Brass |
QTHA-1MB1 | 3000 PSI / 200 bar / 20 MPa | 1/8″ Male NPT (ASME B1.20.1) | Male Quick-test | Yes | No | Brass |
QTHA-1MS0 | 5000 PSI / 350 bar / 35 MPa | 1/8″ Male NPT (ASME B1.20.1) | Male Quick-test | No | No | Stainless Steel |
QTHA-1MS1 | 3000 PSI / 200 bar / 20 MPa | 1/8″ Male NPT (ASME B1.20.1) | Male Quick-test | Yes | No | Stainless Steel |
QTHA-2MB0 | 5000 PSI / 350 bar / 35 MPa | 1/4″ Male NPT (ASME B1.20.1) | Male Quick-test | No | Brass | |
QTHA-2MB1 | 3000 PSI / 200 bar / 20 MPa | 1/4″ Male NPT (ASME B1.20.1) | Male Quick-test | Yes | No | Brass |
QTHA-2MS0 | 5000 PSI / 350 bar / 35 MPa | 1/4″ Male NPT (ASME B1.20.1) | Male Quick-test | No | No | Stainless Steel |
QTHA-2MS1 | 3000 PSI / 200 bar / 20 MPa | 1/4″ Male NPT (ASME B1.20.1) | Male Quick-test | Yes | No | Stainless Steel |
QTHA-3MB0 | 5000 PSI / 350 bar / 35 MPa | 3/8″ Male NPT (ASME B1.20.1) | Male Quick-test | No | No | Brass |
QTHA-3MB1 | 3000 PSI / 200 bar / 20 MPa | 3/8″ Male NPT (ASME B1.20.1) | Male Quick-test | Yes | No | Brass |
QTHA-3MS0 | 5000 PSI / 350 bar / 35 MPa | 3/8″ Male NPT (ASME B1.20.1) | Male Quick-test | No | No | Stainless Steel |
QTHA-3MS1 | 3000 PSI / 200 bar / 20 MPa | 3/8″ Male NPT (ASME B1.20.1) | Male Quick-test | Yes | No | Stainless Steel |
QTHA-4MB0 | 5000 PSI / 350 bar / 35 MPa | 1/2″ Male NPT (ASME B1.20.1) | Male Quick-test | No | No | Brass |
QTHA-4MB1 | 3000 PSI / 200 bar / 20 MPa | 1/2″ Male NPT (ASME B1.20.1) | Male Quick-test | Yes | No | Brass |
QTHA-4MS0 | 5000 PSI / 350 bar / 35 MPa | 1/2″ Male NPT (ASME B1.20.1) | Male Quick-test | No | No | Stainless Steel |
QTHA-4MS1 | 3000 PSI / 200 bar / 20 MPa | 1/2″ Male NPT (ASME B1.20.1) | Male Quick-test | Yes | No | Stainless Steel |
QTHA-6MB0 | 5000 PSI / 350 bar / 35 MPa | 3/4″ Male NPT (ASME B1.20.1) | Male Quick-test | No | No | Brass |
QTHA-6MB1 | 3000 PSI / 200 bar / 20 MPa | 3/4″ Male NPT (ASME B1.20.1) | Male Quick-test | Yes | No | Brass |
Source: ralstoninst.com
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