Industry-Verified Manufacturing Data (2026)

Backwash Valve Assembly

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Backwash Valve Assembly used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Backwash Valve Assembly is characterized by the integration of Valve Body and Actuator. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A valve assembly specifically designed to control and direct the flow of water or cleaning solution during the backwash cycle of filtration systems.

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Product Specifications

Technical details and manufacturing context for Backwash Valve Assembly

Definition
The Backwash Valve Assembly is a critical component within Backwash Systems that manages the reversal of flow through filters to remove accumulated contaminants. It typically consists of multiple valves, actuators, and control mechanisms that work together to initiate, control, and terminate the backwash process, ensuring efficient filter cleaning and system maintenance.
Working Principle
During normal filtration, the assembly maintains forward flow through the filter media. When backwash is initiated, the valve assembly redirects flow in the reverse direction, often using a combination of multi-port valves, solenoid valves, or pneumatic actuators to create the necessary pressure differential that dislodges trapped particles from the filter media.
Common Materials
Stainless Steel, Brass, PVC, EPDM Seals
Technical Parameters
  • Connection port diameter for piping interface (mm) Customizable
Components / BOM
  • Valve Body
    Main housing that contains flow passages and provides connection points
    Material: Stainless Steel
  • Actuator
    Mechanism that opens and closes the valve, can be manual, pneumatic, or electric
    Material: Aluminum Alloy
  • Seals/Gaskets
    Prevent leakage between moving parts and connection points
    Material: EPDM or Viton
  • Control Mechanism
    Regulates valve position and timing during backwash cycle
    Material: Various (depending on actuation type)
Engineering Reasoning
0.5-6.0 bar (7.25-87.0 psi)
8.0 bar (116.0 psi) differential pressure across valve seat
Design Rationale: Plastic deformation of valve seat material (EPDM rubber) exceeding yield strength of 15 MPa at 8.0 bar differential pressure, causing permanent seal deformation and leakage
Risk Mitigation (FMEA)
Trigger Particulate contamination exceeding 50 μm diameter in fluid stream
Mode: Seal abrasion leading to 0.1 L/min leakage at 3.0 bar
Strategy: Install 25 μm pre-filter upstream with differential pressure monitoring at 0.5 bar threshold
Trigger Water hammer pressure spike exceeding 10 bar during rapid valve closure (0.2 second actuation)
Mode: Actuator shaft shear failure at 45 MPa torsional stress
Strategy: Implement controlled closure algorithm with 1.0 second minimum actuation time and pressure relief valve set at 7.0 bar

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Backwash Valve Assembly.

industrial backwash valve assembly filtration system backwash valve stainless steel backwash valve EPDM seal backwash valve brass backwash valve assembly

Applied To / Applications

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

Backwash System
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Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0-10 bar (150 psi)
flow rate: Up to 200 m³/h
temperature: -10°C to 80°C
slurry concentration: Up to 5% solids by weight
Media Compatibility
✓ Potable water ✓ Industrial process water ✓ Mild chemical cleaning solutions
Unsuitable: Highly corrosive acids or solvents
Sizing Data Required
  • System flow rate (m³/h)
  • Pipe diameter (mm/inches)
  • Backwash cycle frequency (cycles/day)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Seal degradation and leakage
Cause: Chemical attack from process fluids, thermal cycling, or improper seal material selection leading to loss of sealing integrity
Actuator mechanism failure
Cause: Corrosion buildup, lack of lubrication, or mechanical wear in linkage/gear components preventing proper valve cycling
Maintenance Indicators
  • Visible leakage around valve body or actuator during operation
  • Unusual grinding or sticking sounds during backwash cycles
Engineering Tips
  • Implement regular seal inspection and replacement schedule based on chemical compatibility charts and operating hours
  • Establish preventive lubrication program for actuator mechanisms and verify proper alignment during installation

Compliance & Manufacturing Standards

Reference Standards
ISO 5208:2015 (Industrial valves - Pressure testing of valves) ANSI/ASME B16.34 (Valves - Flanged, Threaded, and Welding End) DIN EN 12266-1 (Industrial valves - Testing of metallic valves)
Manufacturing Precision
  • Bore diameter: +/-0.05mm
  • Seat flatness: 0.08mm across mating surface
Quality Inspection
  • Hydrostatic pressure test (leakage verification)
  • Dimensional verification (critical features per drawing)

Factories Producing Backwash Valve Assembly

Verified manufacturers with capability to produce this product in China

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✓ 98% Supplier Capability Match Found

S Sourcing Manager from Singapore Jan 24, 2026
★★★★★
"The Backwash Valve Assembly we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."
Technical Specifications Verified
P Procurement Specialist from Germany Jan 21, 2026
★★★★☆
"Found 56+ suppliers for Backwash Valve Assembly on CNFX, but this spec remains the most cost-effective. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Brazil Jan 18, 2026
★★★★★
"The technical documentation for this Backwash Valve Assembly is very thorough, especially regarding technical reliability."
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.”

14 sourcing managers are analyzing this specification now. Last inquiry for Backwash Valve Assembly from Vietnam (58m ago).

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Frequently Asked Questions

What materials are used in this backwash valve assembly?

Our backwash valve assembly is constructed from durable materials including stainless steel, brass, or PVC for the valve body, with EPDM seals for reliable performance in filtration systems.

What components are included in the backwash valve assembly?

The assembly includes an actuator for operation, a control mechanism for flow direction, seals and gaskets for leak prevention, and a valve body that houses all components.

How does this valve assembly improve filtration system maintenance?

This backwash valve assembly efficiently controls and directs water flow during backwash cycles, ensuring thorough cleaning of filter media and extending the lifespan of your filtration system.

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 Machinery and Equipment Manufacturing sector.

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