Editorial Technical Reference

Connection Fittings

This page explains how Connection Fittings is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Mechanical components that join and secure nozzles, pipes, and other elements within a rinsing nozzle array system.

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Connection Fittings in a manufacturing environment
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Product Specifications

Technical details and manufacturing context for Connection Fittings

Definition
Connection fittings are specialized components within a rinsing nozzle array that provide secure, leak-proof junctions between nozzles, supply pipes, manifolds, and mounting structures. They ensure proper alignment and fluid flow distribution while allowing for assembly, disassembly, and maintenance of the array. These fittings are available in materials such as Stainless Steel 316, Brass, and PTFE, and are designed to operate within a nominal diameter range of DN15 to DN50 (ISO 6708), an operating pressure of 1.0 to 1.6 MPa, and a temperature range of -10 to 80 °C. Connection types are threaded, typically BSPP or NPT (ISO 7-1), with thread tolerance class 6g/6H (ISO 965-1). Material grades include 304/316L (ASTM A276), and seal materials are NBR or EPDM (ASTM D2000). Surface finish is specified as Ra ≤ 0.8 μm (ISO 1302), and weight ranges from 0.05 to 0.5 kg per fitting size. These parameters serve as directory reference ranges; actual values must be confirmed with the legal manufacturer or supplier for the specific model and application. The fittings are designed to withstand fluid pressure and mechanical stresses during rinsing operations, maintaining alignment and preventing leaks while allowing modular assembly. They are critical for the integrity and performance of the rinsing system, and proper selection and installation are essential. Verification of model-specific values and standards is required before procurement or use.
Working Principle
Connection fittings create sealed mechanical joints through threaded, clamped, or welded interfaces that withstand fluid pressure and mechanical stresses during rinsing operations. They maintain alignment and prevent leaks while allowing for modular assembly of the nozzle array. The sealing is achieved through the compression of seal materials (NBR or EPDM) against mating surfaces, ensuring a leak-proof connection. The threaded interfaces (BSPP or NPT) provide a secure mechanical connection, and the thread tolerance (6g/6H) ensures proper fit. The operating pressure and temperature ranges are critical for the selection of appropriate materials and seal types. The fittings must be installed with proper torque to avoid over-stressing the threads or damaging the seals. Regular inspection for signs of wear, corrosion, or leakage is necessary to maintain system integrity.
Common Materials
Stainless Steel 316, Brass, PTFE
Technical Parameters
ParameterTypical rangeNotes & selection driver
Nominal DiameterDN15–DN50 mmMatches pipe sizeISO 6708
Operating Pressure1.0–1.6 MPa
Operating Temperature-10–80 °CSeal material limits
Connection TypeThreadedBSPP or NPTISO 7-1
Material Grade304/316L316L for corrosionASTM A276
Seal MaterialNBR/EPDMEPDM for chemicalsASTM D2000
Thread Tolerance6g/6HEnsures fitISO 965-1
Surface FinishRa ≤ 0.8 μmFor sealingISO 1302
Weight0.05–0.5 kgPer fitting size

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
  • Threaded Body Part
    Main structural component with internal/external threads for connection
    Material: Stainless Steel
  • Sealing Surface Part
    Precision machined surface that creates leak-proof seal with mating component
    Material: Stainless Steel
  • Gasket/Gasket Seat Part
    Provides additional sealing between connected components
    Material: PTFE or Rubber
  • Clamp Optional
    Holds the joint together on clamped (quick-release) fittings instead of threads.

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 bar (150 psi)
flow rate: 0.5 to 50 L/min
temperature: -20°C to 120°C
slurry concentration: Up to 15% solids by weight
Media Compatibility
✓ Water-based cleaning solutions ✓ Mild chemical rinses (pH 4-9) ✓ Food-grade sanitizers
Unsuitable: Highly corrosive acids (e.g., concentrated sulfuric acid)
Sizing Data Required
  • Pipe/nozzle diameter (mm or inches)
  • Required flow rate (L/min or GPM)
  • System operating pressure (bar or psi)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thread galling
Cause: Improper installation torque causing metal-to-metal friction, material incompatibility, or lack of lubrication during assembly leading to seizing and thread damage.
Seal degradation
Cause: Chemical incompatibility with process fluids, thermal cycling causing elastomer hardening/cracking, or excessive vibration leading to gasket/O-ring compression set and leakage.
Maintenance Indicators
  • Visible fluid weeping or drips at connection points
  • Audible hissing or high-frequency vibration noises from fittings
Engineering Tips
  • Use calibrated torque wrenches and follow manufacturer specifications for installation to prevent over/under-tightening
  • Implement regular torque audits and thermal imaging inspections to detect loose connections before catastrophic failure

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 8434-1: Hydraulic fluid power - Connections - Part 1: 24° cone connectors ANSI/ASME B16.11: Forged Fittings, Socket-Welding and Threaded DIN 2353: Tube fittings with 24° cone seat for hydraulic applications

Quoted from the published standard.

Manufacturing Precision
  • Thread pitch: +/-0.05 mm
  • Surface finish (Ra): 0.8 μm max
Quality Inspection
  • Pressure test: 1.5x working pressure for 2 minutes
  • Dimensional verification with CMM (Coordinate Measuring Machine)
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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Manufacturers of Connection Fittings

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Tuohai Hardware
Jiangsu, CN
Also makes: Compression Spring, Torsion Spring, Extension Spring
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Connection Fittings”
View source page ↗ tuohaihardware.com · recorded 2026-09-10
View profile Send enquiry
ZHEJIANG BEST & HONEST ELECTROMECHANICS CO., LTD.
Zhejiang, CN
Also makes: Pressure Reducing Valve, Check Valve, Gate Valve and 2 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Press-Connection-Fittings”
View source page ↗ best-honest.com · recorded 2026-10-11
View profile Send enquiry

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Frequently Asked Questions

What materials are available for connection fittings?

Connection fittings are available in Stainless Steel 316, Brass, and PTFE. Material grade options include 304/316L (ASTM A276). The choice depends on the application's corrosion resistance and chemical compatibility requirements.

What are the operating pressure and temperature ranges?

The operating pressure range is 1.0 to 1.6 MPa, and the operating temperature range is -10 to 80 °C. These are reference ranges; actual limits may vary based on the specific fitting model and seal material.

What connection types are available?

Connection types are threaded, typically BSPP or NPT (ISO 7-1). Thread tolerance class is 6g/6H (ISO 965-1). Ensure the thread type matches the mating components.

How do I verify the correct fitting for my application?

Check the nominal diameter (DN15-DN50), operating pressure, temperature, and connection type against your system requirements. Always confirm model-specific values and standards with the legal manufacturer or supplier before installation.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Related equipment

Applied To / Applications

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

Rinsing Nozzle Array
View system integration details
Manifold/Piping
View system integration details
Vacuum Line / Valve (if applicable)
View system integration details
Heating Jacket/Coil
View system integration details
Headers/Distributors
View system integration details
Rail Pipe
View system integration details
Distribution Manifold/Ducts
View system integration details

Industrial Ecosystem & Supply Chain Structure

Data Basis

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

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.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 13 October 2026

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