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HDPE/PTFE Barrier Diaphragm Pump
A picture of our barrier Diaphragm Pump in HDPE or PTFE
Metal Barrier Diaphragm Pump
A picture of our Barrier Diaphragm Pump in Metal
A picture of our barrier Diaphragm Pump in HDPE or PTFE
HDPE/PTFE
A picture of our Barrier Diaphragm Pump in Metal
Metal
See Technical Data |
Model Max Capacity (L/min) Connections BSP inv.
TRB20 20 1⁄2”
TB50 50 1⁄2”
TB100 100 1”
TB200 200 1 1⁄2”
TB400 400 2"

FAQs

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What is a Barrier Diaphragm Pump?

It's a Diaphragm Pump equipped with a second (barrier) diaphragm layer and leak protection monitoring, designed to prevent product leakage into the air system or environment, shut down automatically upon diaphragm rupture, and trigger alarms or external controls when connected to a Guardian System.
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Why Choose a Barrier Pump Over a Standard Diaphragm Pump?

Standard Diaphragm Pumps offer no protection in the event of diaphragm failure. Barrier Pumps contain the leak within a sealed chamber, shut the system down immediately, protect operators, equipment, and the environment, while complying with strict chemical handling protocols.
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Which Materials are Available?

This pump is available in Plastics (HDPE or virgin PTFE) for chemical resistance, or Metal (Aluminium, Cast Iron or AISI 316L Stainless Steel) for mechanical strength.
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How Does the Leak Detection System Work?

The control system continuously monitors pressure or conductivity between the diaphragms. If the primary diaphragm ruptures, fluid enters the barrier chamber. This pump automatically stops operation, sending an alert via the Guardian System, which allows for safe intervention before any external leakage occurs.
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What is a Guardian System?

Tapflo UK's Guardian System is a smart air valve control and monitoring unit that monitors diaphragm integrity, triggers emergency shutdown, and is compatible with remote alarms or plant control systems. Designed by Tapflo UK, the Guardian System is now sold globally.
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What Kinds of Applications Require a Barrier System?

Barrier Pumps are ideal for hazardous, aggressive, or valuable fluids, especially in Chemical Handling, Pharmaceuticals, Petrochemical, General Process, and any other industry or site requiring zero leakage tolerance.
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What Flow Rates & Sizes are Available?

With connection sizes ranging from ½” to 2", our range encompasses capacities from 20 l/min up to 400 l/min.
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What Kinds of Solids & Viscosities Can this Pump Handle?

These pumps offer solids-handling capabilities up to 15mm while handling viscosities up to 200+ cSt. Additionally, these pumps are self-priming.
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Is the Barrier Pump ATEX-Compatible?

Yes, in metal configurations and conductive plastic builds (HDPE/PTFE). We always recommend confirming material selection and zone classification when specifying for ATEX environments.

Barrier Diaphragm Pump

Our Barrier Diaphragm Pump is ideal for hazardous applications, such as Chemicals, and is specifically designed with an additional set of diaphragms. This feature significantly reduces the risks of potentially hazardous or valuable products being leaked into the air distribution system and surrounding environment. For enhanced versatility, these pumps are available in HDPE/PTFE and Metal executions. For added monitoring of your pump, protection devices, such as our Guardian Systems, are available. 

Typical applications for our Barrier Diaphragm Pump:

  • Our Barrier Diaphragm Pump can be used for every application applicable to our standard Diaphragm Pumps, with the added benefit of leak protection
Overview

Our Barrier Diaphragm Pump is ideal for various hazardous applications, like chemicals, where it is important to catch a rupture quickly. The Barrier Pump is specially constructed to include a control system that detects the rupture to avoid potentially harmful products being leaked into the surrounding environment or the air distribution system.

When a rupture is detected, the Diaphragm Pump is automatically stopped, and an alarm can be generated. It is essential to ensure that your pump remains in good working order to ensure leakage doesn’t occur, which could cause damage to your pump and the environment. The Metal Barrier Diaphragm Pump is part of the Tapflo range of products, such as the PDRN, the PDFM and the PDHS, which supports the extended use of your equipment.

Features & Benefits
  • Containment – If the primary diaphragms are breached, the pump is shut off.
  • Monitor – Continually monitors barrier pumps, tanks, vessels & pipework for leaks.

Our TB Barrier Diaphragm Pump is inherently safer than other barrier systems on the market and forms part of our range of pump equipment that monitors and reacts to leakage, reassuring our clients that product containment can always be achieved.

To support the safety features of the TB Pump, Tapflo UK also offer a wide range of pneumatic accessories that aid in the process, including the Guardian System, which was designed by Tapflo UK’s Technical Director and is now sold globally through the Tapflo network.

Specifications
Drive Type Pneumatic
Flow Rate up to 570 l/min
Pressure up to 160 meters
Material Aluminium, Cast Iron, PE & PTFE, Stainless Steel AISI 316L
Self-Priming Yes
Solids Handling up to 15mm
Viscosity 0-200+ cSt