Press Fitting for Threaded Pipe Connections

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing methods for attaching fittings to threaded pipe connections are time-consuming, prone to inconsistencies, and can cause damage due to high torque usage, and leak testing is labor-intensive, especially when using sealants like Teflon or hemp.

Innovation Solution

A fitting with a base body that has a pressing surface opposite the threaded portion, allowing for radial pressing to create a reliable seal without high force, using a press fitting profile to connect additional pipes, and incorporating a sealing body that is either part of the threaded portion or positioned within it for axial stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sealants such as Teflon or hemp are used to ensure a reliable seal, then sealing reliability is improved, but the installation process becomes more time-consuming and hygiene issues arise

Engineering Contradiction:

Improvesealing reliabilityVSAvoidinstallation time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The invention extracts and eliminates the need for separate sealants (Teflon, hemp) by integrating a sealing body directly into the fitting. The sealing body is positioned in a groove on the threaded portion, allowing the fitting to create a seal through pressing alone, without requiring additional sealing materials that consume time and pose hygiene risks.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention merges the sealing function with the fitting structure itself by incorporating a sealing body into the fitting's threaded portion. This integration combines the mechanical connection function with the sealing function into a single component, eliminating the need for separate sealants and simplifying the installation process.

Inventive Principle:

Principle #5Merging (Combining)

2Strength

If high torques are introduced using screw-wrench or pipe wrench to create threaded connections, then connection strength is improved, but damage to threads or components occurs

Engineering Contradiction:

Improveconnection strengthVSAvoidthread damage

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The invention replaces the traditional torque-based mechanical fastening system with a pressing-based sealing system. Instead of relying on high torque from screw-wrenches or pipe wrenches to create both connection and seal, the fitting uses a pressing tool to apply radial force that deforms the base body and creates a seal through the sealing body, eliminating the need for high-torque threading operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If traditional threaded connections are installed and sealed with sealants, then sealing is achieved, but leak testing becomes time-consuming

Engineering Contradiction:

Improvesealing capabilityVSAvoidleak testing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The pressing operation itself serves dual purposes: it creates the mechanical connection and simultaneously forms the seal through deformation of the base body and sealing body. This self-service approach eliminates the need for separate leak testing procedures, as the pressing process inherently ensures sealing integrity.

Inventive Principle:

Principle #25Self-service

4Reliability

If manual application of sealants is used, then sealing is achieved, but inconsistencies in the seal occur

Engineering Contradiction:

Improvesealing capabilityVSAvoidseal consistency

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The invention replaces manual sealant application with a mechanically controlled pressing process. The pressing tool applies consistent radial force that deforms the base body and sealing body in a controlled manner, ensuring uniform sealing pressure and consistent seal quality without the variability inherent in manual sealant application.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This method simplifies the attachment process, reduces the risk of damaged connections, ensures hygienic sealing, and provides high resistance to torsion and leakage, combining the benefits of threaded and pressed connections.

Implementation Method 1

By pressing the base body in the area of the pressing surface the sealing body is pressed against the thread of the threaded connection and the threaded portion of the fitting, so that a reliable seal between the fitting and the threaded connection is achieved

Methodology Applied

Scientific EffectRadial pressing: Mechanical Force

Data Source

PatentUS10359132B2Press fitting for a threaded connection and method for attaching a fitting to a threaded connection

Publication Date: 2019.07.23 VIEGA TECHNOLOGY GMBH & CO KG

AI summary

A fitting for attaching to a threaded connection of a pipe, in particular a water pipe, includes a basic body, a threaded portion, and a sealing body arranged on the threaded portion. The basic body has a pressing surface on the side situated opposite to the threaded portion. Also disclosed is a method for attaching a fitting to a threaded connection of a pipe.