ISO 10651-4 32 mm Plug and Ring Gauges for Resuscitators
The KINGPO ISO 10651-4 32 mm Plug and Ring Gauges are precision mechanical gauges for dimensional inspection of bag refill valve connectors used with user-powered resuscitators. The KP-10651P Plug Gauge checks 32 mm socket connectors, while the KP-10651R Ring Gauge is intended for the corresponding cone connectors. Both gauges feature hardened 440C stainless steel construction and defined reference dimensions for ISO 10651-4 connector inspection.
- Product Type: 32 mm Plug Gauge and Ring Gauge
- Applicable Standard: ISO 10651-4
- Relevant Requirement: Clause 6.6, Figure 1
- Test Object: Bag Refill Valve Connectors
- Primary Purpose: Dimensional inspection of 32 mm conical connectors
- Plug Gauge Model: KP-10651P
- Ring Gauge Model: KP-10651R
- Nominal Connector Size: 32 mm
- Basic Taper: 1:28 on diameter
- Material: 440C Stainless Steel
- Rockwell Hardness: HRC 58–60
- Critical Surface Roughness: Ra ≤ 0.8 μm
- Typical Users: Resuscitator manufacturers, medical connector suppliers and medical device testing laboratories
- Configuration: Plug gauge, ring gauge or matching gauge set according to inspection requirements
ISO 10651-4 32 mm Plug and Ring Gauges
Product Overview
User-powered resuscitators rely on properly designed connectors to ensure compatibility between the resuscitator body, valves and associated breathing accessories. Where a conical connection is provided for a bag refill valve, the connector geometry must meet the dimensional requirements specified in ISO 10651-4.
The 32 mm Plug and Ring Gauges provide defined reference geometry for inspecting these mating connectors. Instead of measuring airflow or ventilation performance, the gauges are used to assess whether the conical connection has the required dimensions and engagement position.
The KP-10651P is designed for inspection of the 32 mm socket connector. The KP-10651R is used for checking the corresponding cone connector associated with the bag refill valve.
Together, they provide complementary inspection tools for manufacturers and laboratories evaluating both sides of the 32 mm conical connection.
Both gauges are manufactured from 440C stainless steel, with specified HRC 58–60 hardness and critical surface roughness not exceeding Ra 0.8 μm.
KP-10651P Plug Gauge vs. KP-10651R Ring Gauge
Although both gauges relate to the same 32 mm connection system, they inspect different mating components.
| Item | KP-10651P Plug Gauge | KP-10651R Ring Gauge |
|---|---|---|
| Gauge Type | Plug Gauge | Ring Gauge |
| Connector Inspected | 32 mm Socket Connector | 32 mm Cone Connector |
| Inspection Purpose | Internal conical geometry and engagement position | External conical geometry and engagement position |
| Gauge Construction | Cylindrical plug with reference steps | Precision ring with internal reference geometry |
| Applicable Standard | ISO 10651-4 | ISO 10651-4 |
| Reference Drawing | Figure 1 | Figure 1 |
KP-10651P — 32 mm Plug Gauge
The KP-10651P Plug Gauge is intended for checking the dimensional conformity of the 32 mm socket connector provided for attachment of a bag refill valve.
The plug gauge is engaged with the socket connector using the inspection conditions defined by the applicable ISO 10651-4 procedure.
The position of the connector’s leading edge relative to the gauge’s reference steps is used to assess whether the socket geometry falls within the required dimensional limits.
KP-10651R — 32 mm Ring Gauge
The KP-10651R Ring Gauge is designed for dimensional inspection of the corresponding 32 mm cone connector of a bag refill valve.
Its defined internal geometry provides a reference for assessing the mating cone dimensions and engagement position.
The ring gauge is particularly relevant when a laboratory or manufacturer needs to examine the external conical interface rather than the socket connector.
Technical Specifications
General Specifications
| Parameter | Specification |
|---|---|
| Product Series | ISO 10651-4 32 mm Plug and Ring Gauges |
| Applicable Standard | ISO 10651-4 |
| Relevant Drawing | Figure 1 |
| Nominal Connector Size | 32 mm |
| Basic Taper | 1:28 on diameter |
| Plug Gauge | KP-10651P |
| Ring Gauge | KP-10651R |
| Gauge Material | 440C Stainless Steel |
| Rockwell Hardness | HRC 58–60 |
| Surface Roughness | Ra ≤ 0.8 μm on critical surfaces |
| Inspection Method | Mechanical dimensional gauging |
KP-10651P Plug Gauge Dimensions
| Parameter | Specification |
|---|---|
| Model | KP-10651P |
| Gauge Type | Plug Gauge |
| Smaller Indicated Diameter | 31.840 ± 0.005 mm |
| Larger Indicated Diameter | 32.234 ± 0.005 mm |
| Reference Length | 11 ± 0.005 mm |
| Reference Step Dimensions | 3 ± 0.005 mm and 1.5 ± 0.005 mm |
| Specified Edge Radii | R0.35–R0.5 mm |
KP-10651R Ring Gauge Dimensions
| Parameter | Specification |
|---|---|
| Model | KP-10651R |
| Gauge Type | Ring Gauge |
| Smaller Indicated Diameter | 31.775 ± 0.005 mm |
| Larger Indicated Diameter | 32.158 ± 0.005 mm |
| Reference Length | 11 ± 0.005 mm |
| Reference Step Dimensions | 3 ± 0.005 mm and 1.5 ± 0.005 mm |
| Specified Edge Radii | R0.35–R0.5 mm |
Dimensional Note:
The dimensions and reference steps of each gauge must be interpreted together with the corresponding technical drawing. The plug and ring gauges have different measuring geometries and are not interchangeable.
ISO 10651-4 Clause 6.6 – Bag Refill Valve Connector Inspection
ISO 10651-4 specifies particular requirements for user-powered resuscitators, including connector requirements relevant to the safe assembly and use of resuscitator components.
Clause 6.6 addresses the conical connector provided for attachment of a bag refill valve.
Where this connection is provided, the applicable standard specifies a 32 mm socket connector with a 1:28 taper.
Plug Gauge Inspection
For the socket connector, the ISO 10651-4:2023 inspection procedure uses the Figure 1 plug gauge under defined engagement conditions.
| Axial Engagement Force | 50 ± 5 N |
| Simultaneous Rotation | 20 ± 5° |
| Acceptance Assessment | Position of the connector’s leading edge relative to the minimum and maximum diameter steps of the plug gauge. |
These values describe the required inspection conditions. The plug gauge itself is a mechanical reference component, not a force or torque measuring instrument.
Ring Gauge Inspection
The Figure 1 ring gauge may also be used to check the corresponding cone connector of a bag refill valve.
Its internal reference geometry is used to assess the cone’s dimensional engagement under the applicable inspection procedure.
The appropriate gauging conditions and acceptance criteria must be followed for the specified connector.
How the Gauges Are Used
The purpose of dimensional gauging is to establish whether the mating connector geometry falls within the permitted limits.
Plug Gauge:
The laboratory prepares the socket connector, engages the gauge using the prescribed force and rotation conditions, and examines the position of the connector relative to the reference steps.
Ring Gauge:
The corresponding cone connector is inspected using the ring gauge geometry and applicable engagement procedure.
Gauge inspection should be performed using correctly identified reference tools and controlled test conditions.
These gauges do not independently measure connector leakage, respiratory pressure, delivered tidal volume or ventilation performance.
Why the 32 mm Connector Geometry Matters
The 32 mm conical connection is associated with the bag refill valve interface of a user-powered resuscitator.
Its specified geometry is important for maintaining the intended mating relationship between the resuscitator connector and the corresponding valve component.
Dimensional deviations can affect how the two components engage. The use of reference gauges enables manufacturers and laboratories to inspect connector geometry without relying solely on visual examination or uncontrolled mating checks.
Connector Standard Distinction:
The 32 mm connection should not be confused with the commonly used 15 mm and 22 mm respiratory connectors covered by ISO 5356-1. The connector dimensions and intended applications are different.
Typical Laboratory Applications
| Application | Typical Use |
|---|---|
| Manual Resuscitator Manufacturing | Inspection of 32 mm bag refill valve connectors during production quality control. |
| Medical Connector Development | Evaluation of socket and cone geometry during connector design and product validation. |
| Medical Device Testing Laboratories | Dimensional verification of resuscitator connector interfaces associated with ISO 10651-4. |
| Supplier Quality Control | Incoming inspection of valve connector components and mating parts. |
Compliance & Regulatory Assurance
The KINGPO 32 mm Plug and Ring Gauges are designed for dimensional inspection of resuscitator bag refill valve connectors associated with ISO 10651-4 Clause 6.6 and Figure 1. Their defined reference geometry and precision-machined stainless steel construction support controlled connector inspection.
The gauges provide dimensional inspection capability within the applicable test procedure. Complete resuscitator conformity assessment requires additional evaluations of mechanical integrity, connector security and ventilation performance as specified by the relevant standard.
Technical Inquiry & Expert Support
For ISO 10651-4 32 mm Plug and Ring Gauge inquiries, please provide your connector details and inspection requirements to help KINGPO confirm the appropriate gauge configuration.
| Applicable Standard | ISO 10651-4 edition and applicable connector inspection procedure. |
| Connector Type | 32 mm socket connector, cone connector or both mating interfaces. |
| Gauge Configuration | KP-10651P Plug Gauge, KP-10651R Ring Gauge or a matching gauge set. |
| Inspection Conditions | Required engagement conditions, force application or supporting fixture arrangements. |
| Technical Documentation | Dimensional inspection reports, material records or calibration documentation, as required. |
Configuration Support: KINGPO can assist with gauge selection, reference geometry review and technical documentation requirements before quotation.
ISO 10651-4 32 mm Plug and Ring Gauges
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