Metering pump/valve set for resin: gear metering pump with dispense or recirculation valve
Resin metering pump and dispense valve sets · gear pump displacement per revolution, speed and pressure limits, snuff-back or recirculating dispense valves, heated material
A metering pump/valve set for resin is the positive-displacement pump that delivers a fixed volume per revolution from a resin supply, together with the valve that opens, shuts off and, on some designs, recirculates the material at the dispense point. The pump sets how much flows; the valve sets where and when it stops, without drips or stringing. Ask three things first: the shot size or flow and the displacement per revolution that gives it at a sensible speed, the inlet, outlet and differential pressure the pump will see, and whether the valve needs snuff-back, heating or recirculation for the resin used.
Gear metering pumps and matched dispense, shut-off and recirculation valves that meter resins, adhesives and sealants from storage and supply systems, specified by displacement per revolution, speed, pressure limits, temperature and valve type. Diaphragm, plunger, peristaltic and gear metering pumps for chemical dosing in water treatment and process plants are covered on the Metering pump page. Check valves, foot valves and pulsation dampers sold as dosing-pump accessories, and complete meter-mix machines, are outside this page except where compared.
CNFX editorial research · Sources checked October 12, 2026 · 3 sources
Size the gear pump by displacement per revolution, speed and pressure
Zenith (CIRCOR) builds its B-9000 general-purpose metering gear pumps from through-hardened 400-series stainless steel with spur gears in a ground and lapped three-plate housing, in displacements of 0.05, 0.3, 0.6, 1.2, 2.4, 4.5, 9.0, 15, 30, 45 and 90 cc/rev. Recommended speed is up to 500 rpm for 0.05–30 cc/rev and up to 300 rpm for 45 and 90 cc/rev, giving flows up to 27,000 cc/min. Inlet pressure is flooded to 300 psi (20 bar) maximum, outlet 1,000 psi (70 bar) maximum, and differential 20 to 1,000 psi depending on viscosity. [1]
Temperature limits run from 0 °F (−18 °C) to 400 °F (205 °C) with a magnetic coupling seal, or 645 °F (340 °C) depending on shaft seal materials, with single mechanical, double lip, packing or magnetic seals, ISO 6149 or 6162 ports and optional band heaters; resins and adhesives are among the listed applications. [1]
Editorial calculation: the largest pump, 90 cc/rev at 300 rpm, gives the stated 27,000 cc/min; a 2.4 cc/rev pump at its 500 rpm limit gives 1,200 cc/min (20 cc/s). Choosing a displacement that reaches the needed flow well inside the speed limit leaves room to slow down for small shots. [1]
Give the supplier the resin (viscosity at operating temperature, fillers, abrasiveness, pot life), flow or shot volume and cycle time, supply pressure at the pump inlet, back-pressure of hoses, valve and nozzle, operating temperature and heating, seal preference, drive and speed control, valve type, and whether one or two components are metered.
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Match the dispense valve: heated snuff-back for one component, recirculating for two
Graco's iQ snuff-back dispense valve, a pneumatically actuated valve for single-component sealants and adhesives, is rated in its heated version (1.3 mm tip, 60 mm nozzle) for 28 MPa (4,000 psi) fluid pressure and 0.83 MPa (120 psi) air pressure, with a maximum operating temperature of 158 °F (70 °C), a 100 Ω platinum RTD, a 24 V DC solenoid and 75 W heater rating; wetted parts include 316 and 17-4 stainless steel, PEEK, UHMWPE and carbide. [2]
For two-component materials that must not cure or separate in the valve, Graco's Voltex dynamic mix valve with recirculation recirculates between dispenses to keep mixed material suspended and prevent premature curing; it is rated at 1,000 psi (68.9 bar) maximum working pressure and 50 cc/s maximum flow for foaming urethanes and silicones. [3]
Editorial calculation: the iQ valve's 28 MPa fluid rating is four times the 7 MPa (70 bar) outlet limit of the B-9000 pump, so in that pairing the pump, not the valve, limits system pressure; the Voltex valve's 68.9 bar is close to the same pump limit, so check the pressure drop through hoses and mixer. [1][2][3] Editorial note: ask for a drip and stringing test on your resin, nozzle and temperature before accepting the valve.
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Published pump and valve limits side by side
Pressure and temperature limits differ between the pump and each valve; the lowest one sets the system.
Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Resin: [type; viscosity at temperature; fillers; pot life]
Metering: [flow or shot volume; cycle; one or two components; ratio]
Pump: [displacement; speed range; inlet and outlet pressure]
Valve: [snuff-back; heated; recirculating; nozzle]
Temperature: [resin; valve; hoses]
Documents: [pressure ratings; accuracy test on our resin]
Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.
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Compiled and source-reviewed by the CNFX editorial team.
Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review
· Page last updated 13 October 2026
Buyer questions
How is a gear metering pump sized for resin?
By displacement per revolution and speed: Zenith's B-9000 pumps run 0.05–90 cc/rev at up to 500 rpm (300 rpm for 45 and 90 cc/rev), up to 27,000 cc/min. [1]
What pressure can a resin dispense valve take?
Graco rates its heated iQ snuff-back valve at 28 MPa fluid and 0.83 MPa air pressure; its Voltex recirculating valve at 68.9 bar. [2][3]
Why recirculate at the valve?
Graco says Voltex recirculation between dispenses keeps mixed material suspended and prevents premature curing. [3]
Sources and what still needs a direct check
Sources checked 2026-10-12. Zenith (CIRCOR) and Graco describe their own pumps and valves. Ratings of the exact model, seals and heater fitted govern.
