Industry-Verified Manufacturing Data (2026)

Inter-stage Transfer Pump/Piping

Based on aggregated insights from multiple verified 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
    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
Engineering Reasoning
0.1-2.5 bar absolute pressure, 60-95°C temperature, 5-25 m³/h flow rate
Vapor pressure drop below 0.05 bar absolute at pump suction, causing net positive suction head available (NPSHa) < net positive suction head required (NPSHr) by 0.3 m
Design Rationale: Cavitation due to localized pressure falling below vapor pressure of concentrated liquid (approximately 0.03 bar at 60°C for 40% solids solution), creating vapor bubbles that implode at pump impeller causing pitting and vibration
Risk Mitigation (FMEA)
Trigger Inadequate preheating of concentrated liquid from previous stage, causing temperature drop below 65°C
Mode: Viscosity increase from 15 cP to >45 cP, exceeding pump design limit and causing motor overload
Strategy: Install temperature-controlled heat tracing on transfer piping with PID control maintaining 70-85°C
Trigger Solids concentration exceeding 45% w/w due to evaporator control failure
Mode: Crystallization at pipe elbows and pump volute, creating flow restriction and impeller imbalance
Strategy: Implement inline refractometer with automatic dilution valve opening at 42% concentration threshold

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 DNA

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

Verified manufacturers with capability to produce this product in China

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✓ 98% Supplier Capability Match Found

P Project Engineer from Singapore Feb 10, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
S Sourcing Manager from Germany Feb 07, 2026
★★★★★
"As a professional in the Chemical Manufacturing sector, I confirm this Inter-stage Transfer Pump/Piping meets all ISO standards."
Technical Specifications Verified
P Procurement Specialist from Brazil Feb 04, 2026
★★★★★
"Standard OEM quality for Chemical Manufacturing applications. The Inter-stage Transfer Pump/Piping arrived with full certification."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

13 sourcing managers are analyzing this specification now. Last inquiry for Inter-stage Transfer Pump/Piping from Thailand (1h ago).

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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 Specifications verified by CNFX Industrial Index (v2.6.03) for Chemical Manufacturing sector.

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