Mechanical Zero Gap Flange Spreader: 4 Proven Benefits
This instructional video provides a detailed look at the Mechanical Zero Gap Flange Spreader (SG11TM), demonstrated in the field to highlight its Secure-Grip collet technology. Unlike wedge-type spreaders, this tool locks directly into the flange’s bolt holes, allowing technicians to apply controlled mechanical force and separate flange joints even when no initial gap exists between flange faces. Its compact, no-hydraulics design makes it well suited for pipeline maintenance crews, mechanical fitters, and safety supervisors working in confined or high-risk environments.
The demonstration shows how the Secure-Grip collets engage M30, M33, and M36 bolt holes to achieve reliable separation without damaging flange surfaces. Viewers will see how the tool supports critical maintenance tasks such as valve replacement, gasket removal, blind flange access, and turnaround operations across oil & gas, petrochemical, and heavy industrial facilities.
A field technician guides the audience step-by-step through proper collet selection, tool setup, and safe torque application on a flange joint. The video reinforces best practices for tool positioning, torque control, and balanced force application, ensuring crews maintain compliance with industry standards.
By combining expert instruction with real-world application, this resource equips professionals with the knowledge to operate the Mechanical Zero Gap Flange Spreader confidently. It underscores the importance of preparation, precision, and safety awareness—making it an essential training tool for technicians, engineers, and supervisors committed to reliable pipeline maintenance and operational excellence.
(SG11TM) Mechanical Zero Gap Technical Data Sheet | (ZGFS1-KIT) Zero Gap Flange Spreader Technical Data Sheet
Key Specifications
- Spreading Force: 110 kN (11 T) per tool; 220 kN (22 T) used in pairs, achieved with 120 N·m (89 ft·lb) of applied torque (High Pressure SG11TM kit).
- Spreading Distance: up to 90 mm (3.54″).
- Tool Weight: 10.5 kg (23.1 lb).
- Collet Sizes: M30 (1 1/8″), M33 (1 1/4″), M36 (1 3/8″).
- Flange Compatibility: ANSI, DIN, SPO, ASME, API, and BS flanges.
Main Applications
- Flange Joint Separation: The tool applies controlled mechanical force directly between flange faces, allowing technicians to safely open joints without damaging sealing surfaces. This is especially useful in corroded or tightly assembled pipelines.
- Gasket Replacement: By creating precise clearance, the spreader enables maintenance crews to remove worn gaskets and install new ones efficiently, ensuring proper sealing and reducing the risk of leaks.
- Valve Access: The spreader provides the necessary gap for valve removal or installation, helping engineers and fitters complete change-outs quickly while maintaining alignment and safety standards.
- Pipeline Integrity Assurance: Regular use during inspections supports safe disassembly and reassembly of flanges, ensuring that pipelines remain compliant with industry codes and operational reliability.
Mechanical Zero Gap Flange Spreader Tool Kit Options
Low Pressure Mechanical Zero Gap Tool Kit 1
Took Kit Includes:
- 2 x Flange Spreaders
- 1 x Calibrated Torque Wrench with Sockets
- 4 x 3/4″ Bolt Hole Pins
- 4 x 7/8″ Bolt Hole Pins
- 4 x 1″ Bolt Hole pins
- 2 x Pelican Cases with fitted foam
***Customize kit with 5/8″ Bolt Hole Pins for additional fee ***
Low Pressure Mechanical Zero Gap Tool Kit 2
Tool Kit Includes:
2 x Flange Spreaders
2 x Calibrated Torque Wrench with Sockets
4 x 1-1/8″ Bolt Hole Pins
4 x 1-1/4″ Bolt Hole Pins
4 x 1-3/8″ Bolt Hole Pins
2 x Pelican Cases with fitted foam
**Combine kits 1 & 2 for discount **
(SG11TM) High Pressure Mechanical Zero Gap Tool Kit 3
Tool Kit Includes:
1 x SG11TM Tool
1 x 150 mm (6”) Vernier Caliper
1 x 1/2” Drive Torque Wrench and 24 mm Socket
1 x Safety Block
2 x 1-1/8” Collets
2 x 1-1/4” Collets
2 x 1 3/8” Collets
1 x Instruction Manual
1 x Carry Case with protective foam inserts
**Make it a twin kit for a discount**
Important Disclosure: For safety reasons, we recommended to use flange spreaders in pairs.
Technical Data Sheets
Tool Availability
Availability
Purchase: Yes
Rent: Yes, usually ships same day.
🔧 Why Rent from ESI?
Renting Zero Gap flange spreaders from ESI Flange Spreader Rentals means equipping your crew with precision-engineered tools designed for the most demanding flange separation jobs. Our SG Collet Technology delivers internal bolt hole engagement—ideal for zero-clearance joints—eliminating the need for wedges, prying, or manual force. Whether you’re working in confined spaces, high-pressure environments, or during critical turnarounds, ESI’s tools ensure safe, repeatable performance with minimal downtime.
Backed by field-tested durability and ASME/ANSI compatibility, ESI’s rental fleet includes manual and hydraulic options to match your jobsite needs. With fast delivery, expert support, and proven results across industrial sectors, ESI is the trusted choice for contractors, maintenance planners, and turnaround teams seeking flange integrity, safety, and operational efficiency. Rent smarter. Work safer. Choose ESI.