Structured Manufacturing Data (2026)

Inter-stage Transfer Pump/Piping

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Inter-stage Transfer Pump/Piping used in the Chemical Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Inter-stage Transfer Pump/Piping is characterized by the integration of Transfer Pump and Interconnecting Piping. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel (e.g., 316L) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A system that transfers concentrated liquid between successive evaporation stages in a multi-stage vacuum evaporator train.

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Product Specifications

Technical details and manufacturing context for Inter-stage Transfer Pump/Piping

Definition
The inter-stage transfer pump/piping is a critical component within a multi-stage vacuum evaporator train that facilitates the movement of partially concentrated liquid from one evaporation stage to the next. It ensures continuous flow through the system, maintaining process efficiency by transferring the product under controlled conditions (often maintaining vacuum) to the subsequent stage for further concentration.
Working Principle
A pump (typically a centrifugal or positive displacement pump designed for viscous fluids and vacuum service) creates the necessary pressure differential to move the liquid. The associated piping network, often including valves and instrumentation, directs the flow from the discharge of one evaporator stage to the feed of the next. The system is designed to handle the fluid's increasing viscosity and solids content as it progresses through the stages.
Common Materials
Stainless Steel (e.g., 316L), Duplex Stainless Steel, Hastelloy
Technical Parameters
  • Nominal pipe diameter and pump connection size. (mm) Standard Spec
Components / BOM
  • Transfer Pump
    Provides the motive force to move the viscous, concentrated liquid from one stage to the next.
    Material: Stainless Steel Casting/Impeller
  • Interconnecting Piping Part
    Conduit for fluid transfer, designed to minimize pressure drop and accommodate thermal expansion.
    Material: Stainless Steel Pipe
  • Isolation Valve
    Allows for maintenance isolation of the pump or piping section.
    Material: Stainless Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Inter-stage Transfer Pump/Piping.

inter-stage transfer pump chemical manufacturing multi-stage evaporator transfer piping system vacuum evaporator inter-stage pump concentrated liquid transfer pump stainless steel chemical process inter-stage piping isolation valve

Applied To / Applications

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

Multi-Stage Vacuum Evaporator Train
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Vacuum to 10 bar (g), typical operating 0.5-3 bar (g)
flow rate: 5-200 m³/h (typical), depends on evaporator capacity
other spec: NPSHr < 2 m, materials compatible with corrosive/concentrated liquids
temperature: 50-150°C (typical), up to 200°C with special seals
slurry concentration: Up to 60% solids by weight, viscosity < 5000 cP
Media Compatibility
✓ Concentrated sugar syrups in food processing ✓ Caustic solutions in chemical plants ✓ Brine concentrates in desalination
Unsuitable: Abrasive slurries with hard particles > 200 microns (causes excessive wear)
Sizing Data Required
  • Evaporator stage capacity (kg/h of concentrate)
  • Required differential pressure between stages (bar)
  • Fluid properties (viscosity, density, corrosivity)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Cavitation
Cause: Insufficient NPSH (Net Positive Suction Head) due to low suction pressure, high fluid temperature, or excessive pump speed, leading to vapor bubble formation and implosion that damages impeller surfaces.
Abrasive erosion
Cause: Presence of solid particles in the fluid stream causing progressive material loss on impeller vanes, casing walls, and wear rings, often accelerated by high velocities or improper material selection.
Maintenance Indicators
  • Excessive vibration or audible knocking sounds indicating cavitation or bearing wear
  • Visible leakage at mechanical seals or flange connections with pressure drop across the system
Engineering Tips
  • Implement routine NPSH monitoring and maintain suction pressure above vapor pressure through proper piping design and operational controls
  • Install particle filtration upstream and select hardened materials (e.g., tungsten carbide coatings) for wear-prone components based on particle analysis

Compliance & Manufacturing Standards

Reference Standards
ISO 2858:2012 - End-suction centrifugal pumps (Designation, nominal duty point and dimensions) ANSI/ASME B73.1 - Specification for Horizontal End Suction Centrifugal Pumps for Chemical Process DIN EN 22858 - End-suction centrifugal pumps - Rating, performance and dimensions
Manufacturing Precision
  • Impeller Diameter: +/-0.5mm
  • Shaft Runout: 0.025mm maximum
Quality Inspection
  • Hydrostatic Pressure Test (1.5x design pressure)
  • Dimensional Verification (Critical mating surfaces and alignment features)

Factories Producing Inter-stage Transfer Pump/Piping

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are recommended for inter-stage transfer pumps in chemical manufacturing?

Recommended materials include Stainless Steel (316L), Duplex Stainless Steel, and Hastelloy for corrosion resistance in handling concentrated chemical liquids.

Why is inter-stage transfer important in multi-stage vacuum evaporators?

Inter-stage transfer efficiently moves concentrated liquid between successive evaporation stages, maintaining vacuum conditions and optimizing energy use in the evaporation train.

What components are included in a typical inter-stage transfer system BOM?

A typical bill of materials includes interconnecting piping, isolation valves, and transfer pumps designed for handling concentrated liquids under vacuum conditions.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Chemical Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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