Fluid Metering’s complete line of valveless Pump Head Modules accommodate a wide variety of flow ranges, fluid characteristics, and special application requirements. All Pump Head Modules are modular in design, valveless, and consist of just one moving part. This helps offer a higher level of precision and accuracy for use in a diverse range of applications. When ordered together, Pump Head Modules, Pump drive modules, and options are mounted, tested, and shipped as one unit.
Pump Head Modules are the part of the pump that encounters the fluid that is being pumped. As a result, they are often designed to feature high chemical resistance. Fluid Metering Pump Heads are made from various materials of construction for use in most applications.


Q Pump Head
Ceramic Piston & Cylinder Liner
Ideal for Laboratory, Analytical, Industrial and OEM applications
The Q pump head is a reliable and versatile choice for precise fluid metering needs. Known for its high accuracy, with a coefficient of variation (CV) of less than or equal to 0.5%. Particularly notable is its ceramic piston design.
- Constructed from durable materials like ceramics and stainless steel, its highly resistant to corrosion and compatible with a wide range of fluids.
- One moving part – the ceramic piston minimizes wear and tear, enhancing reliability.
- With no valves to clog or leak, maintenance and downtime are significantly reduced.
Product specifications:
Dispense Volume Range: 0.016-1.28 mL/rev
Piston Size: 1/4″, 3/8″ & 1/2″ DIA
Operating Pressure Range:
0-25 , 0-60 psig
0-1.7 , 0-4.1 bar
Cylinder Casing Options: PVDF, ETFE, 316 Stainless Steel
Operating Temperature:
PVDF & ETFE: 0-100°C
316 Stainless Steel: 0-177°C
The dispense volume and flow rate varies based on the specific pump head and motor setup.
The operating pressure range for the 316 Stainless Steel cylinder casing is 0-100 psig (0-6.9 bar).

QSAN Pump Head
Sanitary (Ceramic & 316 Stainless Steel) Fluid Path
Ideal for Laboratory, Analytical, Industrial and OEM applications
The QSAN pump head is designed to meet stringent requirements of hygienic applications. It is a versatile and dependable option where a high degree of accuracy and precision in fluid control is most critical.
- The fluid path is inert and corrosion-resistant, ensuring compatibility with most chemicals.
- One moving part – the ceramic piston minimizes wear and tear, enhancing reliability.
- With no valves to clog or leak, maintenance and downtime are significantly reduced.
Product specifications:
Dispense Volume Range: 0.016-0.72 mL
Piston Size: 1/4″, 3/8″ DIA
Operating Pressure Range:
0-60 psig (0-4.1 bar)
Carrier Options: Plastic, 316 Stainless Steel
Operating Temperature: 0-177°C
The dispense volume and flow rate varies based on the specific pump head and motor setup.

RH Pump Head
Ceramic or Zirconia Piston & Ceramic Cylinder Liner
Ideal for Laboratory, Analytical, Industrial and OEM applications
The RH pump head stands out for its durability due to its high-quality corrosion resistant materials. Its single moving part design, minimizes drift over time, providing millions of cycles of reliable, repeatable pumping.
Capable of repetitive dispensing with a coefficient of variation (CV) of less than or equal to 0.5%.
Small displacement – fully adjustable from zero to maximum.
With no valves to clog or leak, maintenance and downtime are significantly reduced
Product specifications:
Dispense Volume Range: 0.003-0.25 mL/rev
Piston Size: 1/8″, 3/16″, 1/4″ DIA or 9mm
Operating Pressure Range:
0-25 , 0-60 psig
0-1.7 , 0-4.1 bar
Flow Rate Range: 0.001-520.0 mL/min
Cylinder Casing Options: PVDF, ETFE, Polypropylene
Operating Temperature:
PVDF & ETFE: 0-100°C
Polypropylene: 0-80°C
Operating Motor Speed:0-2600 rpm
The dispense volume and flow rate varies based on the specific pump head and motor setup.