Pump Head / Fluid Block for Precision Metering Pumps

Product Specifications

Technical details and manufacturing context for Pump Head / Fluid Block

Definition

A pump head or fluid block is the central component of a precision metering pump assembly responsible for the controlled displacement and delivery of fluid. It houses the critical pumping mechanism (such as a piston, diaphragm, or gear set) and defines the internal flow paths, ensuring precise volumetric accuracy and pressure generation for the pumped medium. The pump head operates by creating a sealed chamber where a mechanical actuator (e.g., piston, diaphragm) cyclically changes the chamber's volume. On the intake stroke, the volume increases, drawing fluid into the chamber through an inlet valve. On the discharge stroke, the volume decreases, pressurizing the fluid and forcing it out through an outlet valve, achieving precise metered flow. This component is typically manufactured from materials such as stainless steel (e.g., 316L), ceramic, PTFE (Teflon), or PEEK, selected for chemical compatibility and durability. Key parameters include maximum flow rate (0.5–50 L/h), operating pressure (1.0–1.6 MPa), maximum operating temperature (-40–85°C), stroke length (10–50 mm), stroke rate (30–120 strokes/min), repeatability accuracy (±0.5%), port size (1/4–1 inch NPT), wetted materials (SS316L per ASTM A240), seal material (PTFE per ASTM D4894), weight (2.5–8.0 kg), IP rating (IP54–IP65 per IEC 60529), and power consumption (30–90 W). These values are reference ranges and must be verified for the specific model and application. The pump head is a critical part in metering systems where precise dosing is required, such as in chemical processing, water treatment, and pharmaceutical manufacturing. Proper selection requires consideration of fluid properties, required flow and pressure, and environmental conditions. Always confirm model-specific specifications and standards with the legal manufacturer or supplier.

Working Principle

The pump head operates by creating a sealed chamber where a mechanical actuator (e.g., piston, diaphragm) cyclically changes the chamber's volume. On the intake stroke, the volume increases, drawing fluid into the chamber through an inlet valve. On the discharge stroke, the volume decreases, pressurizing the fluid and forcing it out through an outlet valve, achieving precise metered flow.

Common Materials

Stainless Steel (e.g., 316L), Ceramic, PTFE (Teflon), PEEK

Technical Parameters

Parameter	Typical range	Notes & selection driver
Max Flow Rate	0.5–50 L/h	Higher flow requires larger pump head size.
Max Operating Temperature	-40–85 °C	Above 85°C may damage seals.
Stroke Length	10–50 mm	Determines displacement per stroke.
Stroke Rate	30–120 strokes/min	Higher rate increases flow but may reduce accuracy.
Repeatability Accuracy	±0.5 %	Critical for metering applications.
Port Size	1/4–1 inch	Must match piping system.NPT
Wetted Materials	SS316L	Corrosion resistance for chemical compatibility.ASTM A240
Seal Material	PTFE	Chemical resistance and low friction.ASTM D4894
Weight	2.5–8.0 kg	Affects mounting and handling.
IP Rating	IP54–IP65	Protection against dust and water jets.IEC 60529
Power Consumption	30–90 W	Depends on motor size and load.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Piston / Plunger Part
The primary moving element that creates the volumetric change within the pumping chamber.

Material: Ceramic or Hardened Stainless Steel
Seal / Packing Part
Creates a dynamic seal around the piston to prevent fluid leakage from the high-pressure chamber.

Material: PTFE, Viton, or other elastomers
Check Valves (Inlet & Outlet)
One-way valves that ensure fluid flows in the correct direction during the intake and discharge strokes.

Material: Stainless Steel, Sapphire, Ceramic
Fluid Chamber / Cylinder Part
The precisely machined bore where the piston reciprocates and the fluid is pressurized.

Material: Stainless Steel, Ceramic

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pump Head / Fluid Block.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Precision Metering Pump Assembly

View system integration details

Manufacturers of Pump Head / Fluid Block

Manufacturer profiles associated with Pump Head / Fluid Block.

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Frequently Asked Questions

What materials are commonly used for the pump head?

Common materials include stainless steel (e.g., 316L), ceramic, PTFE (Teflon), and PEEK. These are selected for chemical compatibility and durability. Always confirm the wetted materials for your specific application with the manufacturer.

What is the typical operating pressure range?

The reference range is 1.0–1.6 MPa. Verify the exact pressure rating for your model with the supplier.

How does temperature affect the pump head?

The maximum operating temperature range is -40–85°C. Above 85°C, seals may be damaged. Always check the temperature limits for your specific pump head and application.

What is the repeatability accuracy?

The reference repeatability accuracy is ±0.5%. This is critical for metering applications. Confirm the accuracy for your specific model with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 100 bar (1450 psi)
flow rate:	0.1 mL/min to 10 L/min (depending on pump type)
temperature:	-40°C to +85°C
slurry concentration:	Up to 20% solids by weight (particle size < 100 μm)

Pump Head / Fluid Block

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards