Ralston Logo Ralston Instruments Made In the USA

Replacement Parts

Replacement parts for hand pumps, calibration manifolds, nitrogen sources and volume contollers

  • Made in the USA
Replacement Parts

Select a model for more information

Model Description Material
AS-QTFT-CAPS NPAK Cap, plug, chain and hanger ring to cover inlet, outlet ports, stainless steel None
DP0V-0005 DP0V pump body, aluminum Anodized Aluminum
DP0V-0010 DPPV fine adjustment vernier assembly None
DP0V-0015 DP0V pumping piston assembly None
DP0V-0020 DP0V, DPPV, QTCM bleed valve assembly, brass, Delrin None
DP0V-0040 (2) DP0V pressure check valves, brass None
DP0V-0045 (2) DV0V vacuum check valves, brass None
DP0V-CASE DP0V, DPPV pump carrying case holds (1) pump, (2) gauges, ABS plastic None
DP0V-REPK DP0V pump repair kit Brass
DPPV-0005 DPPV pump body, aluminum Anodized Aluminum
DPPV-0015 DPPV Pumping piston assembly None
DPPV-0025 DPPV Pressure / vacuum spool valve assembly, brass Aluminum, Brass
DPPV-0040 (1) DPPV pressure check valve assembly, (1) DPPV vacuum check valve assembly, brass None
DPPV-REPK DPPV pumps repair kit, includes (1) pressure and (1) vacuum check valve Brass
DV0V-REPK DV0V pump repair kit Brass
NPAK-0001 NPAK Tank valve block, aluminum None
NPAK-0002 NPAK Inlet check valve assembly, stainless steel None
NPAK-0004 NPAK Overpressure burst disk (3000 psi / 200 pressure range) None
NPAK-0006 NPAK system fill valve assembly, knob, panel nut None
NPAK-0008 NPAK fill and bleed valve assembly, knob, panel nut None
NPAK-0010 NPAK fine adjust assembly without piston, knob, panel nut None
NPAK-0012 NPAK fine adust piston only None
NPAK-0014 NPAK fine adjust valve block, only None
NPAK-0016 NPAK dual scale pressure gauge (3000 psi / 210 bar) None
NPAK-0030 NPAK tank clamps, bracket and attachment bolts None
NPAK-0035 NPAK nitrogen cylinder (15.2 ft³ / 430 l @ 3000 psi) None
NPAK-0040 NPAK replacement gas regulator None
NPAK-0045 NPAK tube connecting tank fill to regulator, with tube fittings None
NPAK-0050 NPAK tube connecting tank fill valve to "tank pressure" gauge None
NPAK-0055 NPAK tube connecting regulator to fine adjust vernier assembly None
NPAK-0058 NPAK tube connecting regulator to "regulated pressure" gauge None
NPAK-0060 NPAK tube connecting to top of fine adjust vernier, tube fittings None
NPAK-0065 NPAK tube connecting to bottom of fine adjust vernier, tube fittings None
NPAK-0070 NPAK outlet port 1 including tubing and tube fittings, stainless steel None
NPAK-0075 NPAK outlet port 2 including tubing and tube fittings, stainless steel None
NPAK-0080 NPAK gauge compartment with foam liner None
NPAK-0085 NPAK replacement control panel None
NPAK-0090 NPAK replacement case with reinforced steel panel ring None
NPAK-HSBG-VC NPAK bag to hold hoses and adapters in Nitropak, zippered nylon with Velcro None
NPAK-REPK NPAK nitrogen calibration source repair kit None
NPAK-STRP NPAK, QTVC padded adjustable shoulder strap, black nylon, steel hardware None
QSCM-0020 QSCM bleed valve assembly, stainless steel, Delrin None
QSCM-0022 QSCM fine adjustment vernier piston, stainless steel None
QSCM-0023 QSCM fine adjustment vernier body, stainless steel None
QSCM-0024 QSCM calibration manifold body, stainless steel None
QSCM-0025 QSCM fill valve assembly, stainless steel, Delrin None
QSCM-0027 QSCM-0027 None
QTAP-0002 APGV, AP0V, VPGV vernier assembly None
QTAP-0003 APGV, AP0V outlet check-valve assembly None
QTAP-0004 APG0 outlet check-valve assembly None
QTAP-0005 APG0 pumping cylinder (aluminum) with (1) ell installed None
QTAP-0006 APGV pumping cylinder (aluminum) with (1) ell installed Anodized Aluminum, Brass
QTAP-0007 AP pump piston assembly with inlet check-valve, spring Aluminum, Brass
QTAP-0008 AP0V pumping cylinder (aluminum) Anodized Aluminum
QTAP-0010 (1) Handle, (1) link, (2) mounting rivets for all AP, VPGV pumps None
QTAP-0013 APGV, APG0 body casting, painted with (1) ell installed None
QTAP-0014 AP0V body casting, painted None
QTAP-0018 APGV, APG0 gauge tube only None
QTAP-CASE APGV, AP0V, VPGV pump carrying case holds (1) pump, (2) gauges, ABS plastic None
QTAP-REPK APGV, AP0V pump repair kit Plated Steel, Stainless Steel
QTCM-0016 QTCM calibration manifold body, brass None
QTCM-0021 QTCM fill valve assembly, brass, Delrin None
QTCM-0026 QTCM-0026 None
QTCM-REPK QTCM, QSCM manifold repair kit None
QTHA-HSBG Zippered bag to hold hose and adapters, nylon Zippered Nylon
QTHP-0002 HP, XH pump liquid reservoir vent plug with integral pressure relief valve, brass None
QTHP-0004 HP, XH pump liquid reservoir bolt, washer and o-ring None
QTHP-0006 HP, XH pump liquid reservoir top casting, brass None
QTHP-0008 HP, XH inlet check-valve, spring and plug, brass None
QTHP-0010 HP, XH outlet check-valve, spring and plug, brass None
QTHP-0011 HP0V pump body casting with piston (3000 psi / 210 bar) Brass, Stainless Steel
QTHP-0012 HPGV pump body casting with piston (3000 psi / 210 bar) Brass, Stainless Steel
QTHP-0013 XH0V pump body casting with piston (5000 psi / 350 bar) Brass, Stainless Steel
QTHP-0014 HPGV, XHGV fine adjust vernier piston assembly, brass None
QTHP-0015 XHGV pump body casting with piston (5000 psi / 350 bar) None
QTHP-0020 HP, XH moveable handle assembly, rivets, roller None
QTHP-0022 HP, XH fixed handle assembly, rivets None
QTHP-0024 HP0V, XH0V fine adjust vernier piston assembly, brass None
QTHP-0026 HPGV, XHGV bleed valve assembly (black round knob) None
QTHP-CASE HPGV, XHGV, HP0V, XH0V pump carrying case holds (1) pump, (2) gauges, ABS plastic None
QTHP-GASK (1) HP, XH liquid reservoir gasket None
QTHP-HYDL Bottle of ISO-32 hydraulic calibration oil, 12 fl oz (355 ml ) None
QTHP-REPK HPGV, XHGV, HP0V, XH0V pump repair kit Brass, Plated Steel, Stainless Steel
QTHP-RESV Polycarbonate Liquid reservoir and (2) gaskets None
QTVC-0002 QTVC fill valve assembly None
QTVC-0006 QTVC balance valve assembly None
QTVC-0010 QTVC bleed valve assembly None
QTVC-0014 QTVC body, bottom plate None
QTVC-0018 QTVC fine adjust piston only None
QTVC-0020 QTVC top portion of fine adjust assembly without piston None
QTVC-0024 QTVC standard handle / panel None
QTVC-LKIT QTVC Laboratory kit - includes non-skid stand, male bulkhead Quick-test port, 1' hose None
QTVC-REPK QTVC volume controller repair kit None
TRAP-3SSA-LD Male Quick-test bottom connection for Trap, stainless steel None
TRAP-REPK TRAP repair kit None