EZ Connect™ | ZGN Internal Wide-Tolerance Connection Tool
Manual grip-and-seal connector that fits multiple internal thread sizes and thread types with one tool.
- Connect to multiple thread sizes/styles.
- Pressure assisted sealing.
- Self aligning sleeve for reliable connections, even with miss-alignment.
- Compact size fits into tight spaces and tightly spaced bores.
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Lever operation for manual applications. Pneumatic operation for automated testing or end of arm grip and hold.
ICON™ | Intelligent Connection Technology
ICON™ sealing connection tools generate data and provide LED feedback to improve sealing connection accuracy, maximize production efficiency, and optimize tool maintenance. Available for select models. Learn more.
Designed For: in-process testing, fluid transfer, and other related processes.
ZGN Datasheet: Click Here
ZGNP ICON Datasheet: Click Here
ZGNP Operating Instructions: Click Here
ZGNP Rebuild / Repair: Click Here
ZGNL Operating Instructions: Click Here
ZGNL Rebuild / Repair: Click Here
Product Video: Watch Here
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The Wide-Tolerance Internal Threaded Connector
The EZ Connect ZGN is a wide-tolerance internal threaded connector that seals to many thread sizes and types with a single tool. Rather than matching a precise test fitting to each thread, the EZ Connect ZGN connects to NPT, SAE, BSPP/BSPT, and metric internal threads across a range of sizes — making it ideal for mixed-thread test stations, in-process testing, and fluid transfer where one connector needs to cover many parts.
A self-aligning sleeve is the key to that flexibility: it guides the connector into the threaded port and seals reliably even when the part is slightly misaligned, so operators don’t need to fuss with perfect positioning on every connection. Pressure-assisted sealing means the seal energizes further as test pressure rises, and the connector’s compact body fits into tight spaces and tightly spaced bores where a larger tool won’t reach.
The EZ Connect ZGN offers lever operation for manual benchtop applications and pneumatic operation for automated testing or end-of-arm grip-and-hold on robotic stations — rated to 120 psi (8.3 bar) in the lever version and 300 psi (20.7 bar) in the pneumatic version. ICON™ intelligent connection technology is available for select models, adding seal verification and real-time data for PLC-integrated lines.
The ZGN is part of the FasTest EZ Connect tools family of wide-tolerance connectors. Alongside the ZGN (threaded), the family includes the EZ Connect ZN seal-only connector for tubes and bores — together giving manufacturers a fast, alignment-tolerant connection option across both threaded and seal-only applications.
The Problem the EZ Connect ZGN Solves
Threaded test connections become a bottleneck when a line has to handle many thread types and imperfect part positioning:
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Too many thread sizes and types: A precise-fit test fitting only works on one thread size and type. A station that tests NPT, SAE, BSPP, BSPT, and metric parts would need a drawer full of fittings — and an operator changing them constantly.
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Misalignment slows connections: Precise threaded fittings demand careful alignment to start the thread. On a fast line, fighting misalignment on every connection wastes time and causes cross-threading.
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Tight, crowded ports: Many parts have threaded ports in tight spaces or close together, where a bulky connector or a wrench simply won’t fit.
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Manual and automated needs: Benchtop testing wants a simple lever; automated and robotic stations need pneumatic grip-and-hold. One actuation method rarely serves both.
The EZ Connect ZGN solves all of this: one wide-tolerance tool covers many thread sizes and types, a self-aligning sleeve tolerates misalignment, a compact body fits tight bores, and lever or pneumatic actuation serves both manual and automated stations.
Key Features
Connects to Multiple Thread Sizes & Types
The EZ Connect ZGN’s wide-tolerance design lets one tool seal to NPT, SAE, BSPP/BSPT, and metric internal threads across a range of sizes. For mixed-product test stations, this replaces a whole set of precise-fit fittings with a single connector — cutting changeover time, tooling cost, and the chance of grabbing the wrong fitting.
Self-Aligning Sleeve
A self-aligning sleeve guides the EZ Connect ZGN into the threaded port and seals reliably even when the part is slightly misaligned. Operators don’t have to position each part perfectly, which speeds up connections and eliminates the cross-threading that plagues precise-fit fittings on fast lines.
Pressure-Assisted Sealing
The EZ Connect ZGN uses pressure-assisted sealing: as test pressure rises, the seal is energized further rather than working against it. Sealing performance scales with the application across the connector’s range — up to 300 psi (20.7 bar) in the pneumatic version.
Compact Size for Tight Spaces
The EZ Connect ZGN’s compact body fits into tight spaces and tightly spaced bores where larger connectors or wrenches can’t reach. This makes it well suited to densely packed manifolds, close-pitch port patterns, and confined test fixtures.
Lever & Pneumatic Operation
Lever operation handles manual benchtop applications, while pneumatic operation supports automated testing and end-of-arm grip-and-hold on robotic stations. The lever version is rated to 120 psi (8.3 bar) and the pneumatic version to 300 psi (20.7 bar), so the same connector family spans manual and automated production.
ICON™ Intelligent Connection Technology
The EZ Connect ZGN is available with ICON™ for select models (ZGNP), adding SURE SEAL™ digital seal verification, LED feedback, safety interlock signals, and real-time data output — giving automated lines a verified-seal handshake to the PLC before each test cycle.
Technical Specifications
| Specification | Detail |
|---|---|
| Product Type | Wide-tolerance internal threaded connector (part of the FasTest EZ Connect tools family). |
| Connects To | NPT, SAE, BSPP (G)/BSPT, metric, and other internal threads — multiple sizes and types with one tool. |
| Alignment | Self-aligning sleeve seals reliably even with part misalignment. |
| Sealing | Pressure-assisted — seal energizes further as test pressure rises. |
| Max Pressure Rating | Vacuum to 120 psi (8.3 bar) lever version; vacuum to 300 psi (20.7 bar) pneumatic version. |
| Actuation Method | Lever handle | pneumatic | semi-automated | fully automated. |
| Form Factor | Compact — fits tight spaces and tightly spaced bores. |
| ICON™ Availability | Available with ICON™ for select models (ZGNP): SURE SEAL™ verification, safety interlocks, real-time data, PLC integration. |
| EZ Connect Tools Family | ZGN (wide-tolerance threaded) and ZN (wide-tolerance seal-only for tubes/bores). |
| Designed For | In-process testing, fluid transfer, and other related processes. |
| Documentation | ZGN and ZGNP ICON datasheets, ZGNP and ZGNL operating instructions, and rebuild/repair instructions available for download. |
Where the EZ Connect ZGN and EZ Connect Tools Are Used
Mixed-Thread Test Stations
Test stations that handle parts with many different internal threads benefit most from the EZ Connect ZGN. One wide-tolerance connector seals NPT, SAE, BSPP/BSPT, and metric threads across a range of sizes, eliminating the constant fitting changes a precise-fit approach requires — a core advantage of the EZ Connect tools family.
In-Process & Fluid Transfer
For in-process testing and fluid transfer, the EZ Connect ZGN makes fast, alignment-tolerant connections that keep the line moving. The self-aligning sleeve and pressure-assisted seal deliver reliable connections without the careful positioning precise fittings demand.
Tight & Densely Packed Ports
The compact EZ Connect ZGN reaches threaded ports in tight spaces and close-pitch patterns — densely packed manifolds, valve bodies, and confined fixtures — where a larger connector or a wrench can’t fit.
Automated & Robotic Testing
With pneumatic operation and end-of-arm grip-and-hold capability, the EZ Connect ZGN integrates into automated and robotic test cells. ICON™-equipped versions add verified-seal data for PLC-controlled lines, extending the EZ Connect tools family into fully automated production.
EZ Connect ZGN vs. a Precise-Fit Threaded Connector
| Precise-Fit Threaded Connector | EZ Connect ZGN | |
|---|---|---|
| Thread Coverage | One thread size/type per fitting | Many sizes/types with one wide-tolerance tool |
| Misalignment | Must align precisely; cross-threads | Self-aligning sleeve tolerates misalignment |
| Changeover | Swap fittings for each thread type | No swap — one tool covers the range |
| Tight Spaces | Bulky; wrench access needed | Compact — fits tight, close-pitch bores |
| Connection Speed | Slow — align and thread | Fast — self-aligning, lever or pneumatic |
| Sealing | Depends on thread engagement | Pressure-assisted seal to 300 psi |
| Automation | Difficult | Pneumatic grip-and-hold + ICON™ PLC integration |
| Seal Confirmation | None | ICON™ SURE SEAL™ available |
Frequently Asked Questions
Q: What is the EZ Connect ZGN?
A: The EZ Connect ZGN is a FasTest wide-tolerance internal threaded connector that seals to multiple thread sizes and types — NPT, SAE, BSPP/BSPT, and metric — with a single tool, up to 300 psi (20.7 bar) in the pneumatic version. A self-aligning sleeve makes reliable connections even with part misalignment.
Q: What threads does the EZ Connect ZGN connect to?
A: NPT, SAE, BSPP (G)/BSPT, metric, and other internal threads. Its wide-tolerance, self-aligning design lets one tool cover many thread sizes and styles instead of a separate fitting for each.
Q: What are the FasTest EZ Connect tools?
A: The EZ Connect tools are a family of wide-tolerance FasTest connectors built to connect quickly across a range of sizes without precise alignment. The family includes the ZGN (wide-tolerance threaded) and the ZN (wide-tolerance seal-only for tubes and bores).
Q: How does the self-aligning sleeve help?
A: The self-aligning sleeve guides the connector into the threaded port and seals reliably even when the part is slightly misaligned. Operators don’t have to position each part perfectly, which speeds connections and prevents cross-threading.
Q: What is the pressure rating of the EZ Connect ZGN?
A: The lever version is rated to vacuum/120 psi (8.3 bar) and the pneumatic version to vacuum/300 psi (20.7 bar).
Q: Can the EZ Connect ZGN be automated?
A: Yes — lever operation handles manual applications, while pneumatic operation supports automated testing and end-of-arm grip-and-hold on robotic stations. ICON™ (ZGNP) adds verified-seal data for PLC-integrated lines.
Q: Does the EZ Connect ZGN fit tight spaces?
A: Yes — its compact body is designed to fit into tight spaces and tightly spaced bores where larger connectors or wrenches can’t reach, such as densely packed manifolds and close-pitch port patterns.
Q: What is the difference between the ZGN and the ZN?
A: The ZGN is a wide-tolerance threaded connector for internal threads, while the ZN is a wide-tolerance seal-only connector for tubes and bores (under 50 psi). Both are part of the EZ Connect tools family; choose the ZGN for threads and the ZN for seal-only applications.
Q: Is the EZ Connect ZGN available with ICON™?
A: Yes — the ZGNP variant adds SURE SEAL™ digital seal verification, LED feedback, safety interlocks, and real-time data for PLC-integrated automated test stations.
Q: What is the EZ Connect ZGN used for?
A: In-process testing, fluid transfer, and leak/pressure testing of parts with internal threads — especially mixed-thread test stations, tight or densely packed ports, and automated lines that benefit from one wide-tolerance, self-aligning connector.