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  • Calibration Manifolds

    Calibration Manifolds
    The most economical way of performing static pressure calibrations in the field using nitrogen or other compressed gas.

    • Fine adjustment piston provides precise pressure control instead of trying to make adjustments with a pressure regulator and a needle valve
    • Soft-seated valves make filling and venting the system very precise
    • Compact design allows the manifold, gauge adapter and hoses to fit in the included nylon bag
    • Because pressure is controlled at the device under test, the nitrogen cylinder can be mounted on a truck
    • Low volume Quick-test hose, gauge adapter and process connection reduce gas usage and make nitrogen cylinders last longer
    • Made in U.S.A.

    Nitrogen Calibration Sources
    Self contained unit provides a precise nitrogen source for calibrating differential and static pressure instrumentation using an external pressure calibrator

    • Proprietary pressure balanced fine adjustment piston allows for extremely precise, finger-tip control of pressure at 0.03 psi (2 mbar) or 3000 psi (210 bar) or any range in between.
    • Easily refillable nitrogen cylinder holds enough gas for multiple calibrations
    • Nylon bag to hold hose and fittings attached to inside of lid
    • Includes storage compartment in control panel for pressure reference test gauge
    • Low volume Quick-test hose, gauge adapter and process connection can be attached to NPAK without thread sealant or a wrench
    • Onboard pressure gauges display cylinder and regulated pressure (Accuracy +/-2.5% of full scale)
    • Optional padded strap for field use (NPAK-STRP)
    • Made in U.S.A.


     

  • Ralston Instruments Hoses and Adapters

    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.

  • Ralston Instruments Hoses and Adapters

    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.

  • Hydraulic Hand Pump with Gauge Connection-HPGV

    Simple, fast field testing for connecting a calibrator to a process connection. Connect this directly between the equipment to be tested and a reference. No need for a "T" joint.

    • Portable hand operated hydraulic pumps that easily generate up to 5000 psi (350 bar)
    • Two outlet ports allow user to connect to both device under test and external pressure calibrator thus eliminating a tee.
    • Fine Adjustment piston provides an easy way to achieve precise pressure
    • Vent valve is both durable and precise
    • Liquid reservoir holds enough fluid for multiple calibrations
    • Low volume Quick-test hose, gauge adapter and process connection can be attached to pump without thread sealant or a wrench
    • Rugged, all metal construction improves temperature and pressure stability
    • Made in U.S.A.

  • DCAP Pressure Test Pump Standard
  • APGV0000

    Ralston Instruments' Hand Pumps are rugged and portable. Field tested calibration solutions with standard Quick-Test adapters which make connecting to pressure references and the device being calibrated a snap.

  • GAUGE-30HG
  • GAUD-30HG
  • SP0V-15PSIG-M
  • DV0V-0000
  • QTVC2 pic
  • NPAK-0000
  • NPAK-TRSO
  • QTHA-HSBG
  • QTHA-KIT0
  • DPOV-0020
  • QTHP-REPK

    Repair kits for hand pumps, calibration manifolds, nitrogen sources, and volume controllers

  • QTHA-FLTS-HC-40 and Replacement Filter