Flange Tool Online Store

Nut Splitters, Hand Pumps, & Lifting Tools

refinery at night

ESI Flange Tools, Designed
to keep field workers
safe during routine maintenance

Nut splitters and pumps are essential tools for routine maintenance or shutdown operations. Over time, nuts can become virtually inseparable from their fixtures due to corrosion caused by environmental exposure. This often requires precise cutting for removal. Additionally, pump malfunctions, such as air locks or leaks, can lead to significant time losses. We are thrilled to offer our customers an innovative solution to these longstanding challenges.

Compact Angle Head Nut Splitters

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Our compact nut splitter is designed for portability, easily fitting into confined spaces .


Compact Design:  It’s the perfect tool for tight spots, ensuring you have powerful cutting capabilities even in the most confined spaces.

Impressive Strength: Don’t let the size fool you. Despite its compact frame, this nut splitter packs a punch with a cutting force of up to 110,231 lbs (equivalent to 50 tons).

Model Variety: Choose from five distinct models, each designed to handle the majority of nuts found in standard turnarounds. 


Mobility: Our nut splitter’s sleek, compact build is engineered for ultimate portability.

Versatility: Our range ensures you have the precise cutting force needed, tailored to the nut size at hand.

Tailored Efficiency: Cutting force customized for each nut size, our nut splitter provides efficient, targeted performance. This means less wasted effort and a smoother operation, every time

These features and benefits highlight the practicality and efficiency of our nut splitter, making it an essential tool for maintenance and operations.

Nut Splitter on a Nut

Standard Head Nut Splitters

This tool is engineered for rapid and secure operation, tailored to provide optimal ease for the operator. It swiftly eliminates corroded nuts and safely extracts those that are frozen. Its design is ideal for use in confined areas, and it efficiently slices through the toughest nuts with precision. Sizes range from 5/8 thru 5-3/8.

Silent Operation: . The only sounds you’ll notice are the gentle hum of the hydraulic pump and the satisfying “snap” of a cleanly cut nut. Say goodbye to noise pollution and the hazards of noise-induced injuries.

Adaptable Performance: Tackle the toughest nuts with  robust cutting power. Each model boasts compatibility with a broad spectrum of nut sizes, both inch and metric 

Cost Efficiency: Streamline nut removal and minimize downtime. Prevent expensive damages to bolts, studs, and adjacent machinery, translating to significant savings over time.


Hydraulic Hand Pump with Sealed Bladder: Robust & Reliable

sealed bladder pump
Single Port Hydraulic Hand Pump with Sealed Bladder
Duel Port Hydraulic Hand Pump with Sealed Bladder

Challenges Encountered by Field Workers

Traditional hydraulic hand pumps disadvantages:

Maintenance Requirements: They necessitate regular maintenance to ensure sustainable operation, which can incur additional costs.

Physical Exertion: Significant physical effort is required for pumping, which can be strenuous over extended periods.

Spare Parts Availability: Obtaining spare parts can be challenging, especially in remote areas, potentially leading to longer downtimes.

Efficiency: These pumps often have lower efficiency and a fixed flow rate, which may not be suitable for all applications.

Complexity: The design can be more complex compared to other pump types, making them less ideal for high-viscosity fluids or maintaining high-pressure operations

ESI'S Innovative Solution

Advantages of the Sealed Bladder Hydraulic Pump

  • Enhanced Durability: The sealed bladder design ensures a longer lifespan by protecting internal components from contaminants.
  • Consistent Performance: Maintains steady hydraulic pressure for reliable operation, even in demanding conditions.
  • Low Maintenance: The sealed construction minimizes the need for frequent maintenance, reducing overall upkeep costs.
  • Improved Safety: Reduces the risk of leaks and spills, enhancing safety for operators and the environment.
  • Versatile Application: Suitable for a wide range of industrial uses due to its robust design and efficient performance.

*These benefits make the Sealed Bladder Hydraulic Pump a valuable asset in various field operations, ensuring efficiency and safety.*

The Step Wedge Lifting Tool: A Functional Overview

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Hydraulic Lifting Tools

The Step Wedge Lifting Wedge is a specialized tool designed for precision lifting in tight spaces. It features a slim profile that can fit into gaps as small as 3/8″ (9.5mm), making it ideal for detailed work where traditional lifting equipment may not be suitable. The wedge comes with step blocks that allow for a maximum clearance of 2.65″ (67.5mm), providing versatility for various applications. It can be used independently or in conjunction with other lifting tools, offering flexibility for different job requirements. The Step Wedge Lifting Wedge is a practical solution for achieving controlled and safe lifting in industrial and construction settings. 

“Smarter is always better than Harder”

The Vertical Lifting Wedge is a highly functional &
efficient tool with several key features and benefits


  • Stable Lift Motion: Ensures smooth and controlled lifting, minimizing the risk of accidents or damage to the equipment.
  • Robust and Precise Tool: Built to withstand heavy use while providing accurate lifting capabilities.
  • Secure Hold on Each Step: The interlocking first step technology guarantees a firm grip on the object being lifted, enhancing safety.
  • Safe Operation: Designed with user safety in mind, it allows for heavy lifting without compromising on operational security.
  • Saves Time: Streamlines the lifting process, allowing for quicker completion of tasks.
  • Saves Cost: Offers a cost-effective alternative to other lifting methods, reducing overall expenses.
  • Functional Versatility: Can be used for a variety of applications, including heavy machinery installation, plant maintenance, and machinery alignment.
  • Special Features: Operates with an access gap of only 9.5 mm, and each step offers 19 mm of vertical lift with a single acting ram lifting force of 18 T (180 kN).
  • Automatic Mechanical Retraction: Enhances the ease of use by retracting automatically after lifting.
  • Interlocking First Step: Provides a stable and secure lift from the very first movement


These features make the Vertical Lifting Wedge an indispensable tool for industries that require the lifting of heavy machinery with precision and safety.