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Ralston Instruments Quick-test hoses and adapters are designed to provide leak-free connections for use in pressure calibration to 6900 psi (475 bar). Their unique, proprietary design has allowed Ralston Instruments to become a leading supplier of pressure calibration connection products.
Quick-test hoses come in several standard models. Hoses can be made to order in any length with a large selection of hose ends to choose from. Ralston Instruments also makes a wide variety of process connections that allow the user to connect to virtually any process.

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Image for QTHA1MBO
QTHA-1MB0
Ralston 1/8" Male NPT x Male Quick-Test, No Check-Valve, Brass
$9.88
QTHA2MBO image
QTHA-2MB0
Ralston Hose to 1/4" Male NPT x Male Quick-Test, No Check-Valve, Brass
$9.88
QTHA1MB1 image
QTHA-1MB1
Ralston 1/8" Male NPT x Male Quick-Test, with Check-Valve, Brass
$14.58
QTHA2MSO image
QTHA-2MS0
Ralston Hose x 1/4" Male NPT x Male Quick-Test, No Check-Valve, S.S.
$19.20
QTHA2MB1 image
QTHA-2MB1
Ralston 1/4" Male NPT x Male Quick-Test, with Check-Valve, Brass
$14.58
QTHA-1MSO
QTHA-1MS0
Ralston 1/8" Male NPT x Male Quick-Test, No Check-Valve, S.S.
$19.10
QTHA-1MS1
QTHA-1MS1
Ralston 1/8" Male NPT x Male Quick-Test, with Check Valve, S.S.
$26.50
QTHA-2MS1
QTHA-2MS1
Ralston 1/4" Male NPT x Male Quick-Test, with Check-Valve, S.S.
$26.60
QTHA-3MBO
QTHA-3MB0
Ralston 3/8" Male NPT x Male Quick-Test, No Check Valve, Brass
$15.60
QTHA-3MB1
QTHA-3MB1
Ralston 3/8" Male NPT x Male Quick-Test, with Check-Valve, Brass
$20.30
QTHA-3MSO
QTHA-3MS0
Ralston 3/8" Male NPT x Male Quick-Test, No Check-Valve, S.S.
$32.60
QTHA-3MS1
QTHA-3MS1
Ralston 3/8" Male NPT x Male Quick-Test, with Check-Valve, S.S.
$40.40
QTHA-4MBO
QTHA-4MB0
Ralston 1/2" Male NPT x Male Quick-Test, No Check-Valve, Brass
$19.10
QTHA-4MB1
QTHA-4MB1
Ralston 1/2" Male NPT x Male Quick-Test, with Check-Valve, Brass
$23.80
QTHA-4MSO
QTHA-4MS0
Ralston 1/2" Male NPT x Male Quick-Test, No Check-Valve, S.S.
$37.00
QTHA-4MS1
QTHA-4MS1
Ralston 1/2" Male NPT x Male Quick-Test, with Check-Valve, S.S.
$44.40
QTHA-6MBO
QTHA-6MB0
Ralston 3/4" Male NPT x Male Quick-Test, No Check-Valve, Brass
$23.60
QTHA-6MB1
QTHA-6MB1
Ralston 3/4" Male NPT x Male Quick-Test, with Check-Valve, Brass
$28.30
QTHA-1MSO-QD
QTHA-1MS0-QD
Ralston 1/8" Male NPT QD (Quick-Connect) Adapter, S.S.
$55.10
QTHA-2MSO-QD
QTHA-2MS0-QD
Ralston 1/4" Male NPT QD (Quick-Connect) Adapter, S.S.
$59.00
XTHA-1MSO
XTHA-1MS0
Ralston 1/8" Male NPT x Male Quick-Test XT Adapter, S.S.
$40.40
XTHA-2MSO
XTHA-2MS0
Ralston 1/4" Male NPT x Male Quick-Test XT Adapter, S.S.
$40.60
QTHA2MBA
QTHA-2MBA
Ralston Probe Nut 1/4" Male NPT x Female Quick-Test, No Check-Valve, Brass
$16.80
QTHA1MBA
QTHA-1MBA
Ralston 1/8" Male NPT x Female Quick-Test, No Check-Valve, Brass
$13.80
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