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Barrier Protection

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    Barrier Protection used with a Guardian System is unique to Tapflo, used to prevent your pump from leaking harmful chemicals if it were to rupture. Below is a list of Frequently Asked Questions followed by a case study to guide you through the use of Barrier Protection.

    What is Barrier Protection?

    When discussing Barrier Protection at Tapflo we are referring to our range of Air Diaphragm Pumps, Barrier Protection is a variation of the standard pump which gives the user an extra set of diaphragms to contain any fluid in the case of a rupture. A Barrier pump contains a set of primary diaphragms (fluid side) and back up diaphragms (airside). Within a diaphragm pump, the diaphragms are moving parts under pressure; because of this, they present the greatest risk of failure. In the standard pump if the media being pumped penetrates the diaphragm the media will then flow through the centre of your pump, destroying it and in turn leaking out into the atmosphere. Barrier Protection puts a chamber between the fluid diaphragms and the airside which will keep the media from breaking into the atmosphere in the case of a diaphragm rupture.

    What is a guardian monitoring system and how does this work with a barrier pump?

    Guardian is a unique monitoring and energy conservation device designed and sold by Tapflo. The Guardian unit, when fitted to a Barrier Pump, is used to monitor the pressure between the primary and back up diaphragms. In the case of the primary diaphragm rupturing, the Guardian System will detect a pressure change between the two diaphragms and cut the air supply to the pump; this contains the media within the pump and stops any potentially hazardous product being exposed to the environment. The Guardian unit can also be set up to an alarm to the operator at the time of rupture, either with an audible alarm or by giving a signal to a PLC.

    What pump material can I get Barrier Protection in?

    Tapflo Diaphragm Pump fitted with Barrier Protection and a Guardian System Barrier Protection is available throughout our plastic, metal and sanitary Air Diaphragm Pumps. We will match the pump to the application dependent on material specifications for the media.

    What are the reasons for purchasing a pump with Barrier Protection over a standard pump?

    The choice to purchase a Barrier pump is down to the end-user to specify, as Tapflo have criteria that, when hit, will trigger us to offer a Barrier pump. For example, if the chemical being pumped is extremely hazardous and cannot come into contact with the operator, or another customer in the UK has a product that ignites when exposed to the atmosphere, this would make a Barrier pump the only sensible choice to ensure no flames! The flip side of hazardous is expensive; a number of barrier users have products they can’t afford to lose in the instance of a breakdown.

    Does a Barrier Pump have any effect on the pump’s performance?

    Opting for a Barrier pump has NO effect on the pumps flow, pressures or overall performance. This makes opting for this system a no-brainer when pumping hazardous or expensive media.

    Barrier case study

    Tapflo are well known to the chemical and petrochemical industry as the “go-to the provider” for fluid handling pumps, with this knowledge in hand we were approached by a large Chemical Manufacturer based in the UK. They had specific requirements for a pump that would have a zero chance of leaking to the atmosphere due to the flammable nature of the product.

    Application Details:

    Fluid: Undisclosed Full Mud

    Viscosity: 200 cps approx

    Flow Rate: 9 m3/hr

    Temperature: Ambient

    Solids: No

    Pipe Work: 2 inch

    Connections: Special Request

    Length of discharge: 6 Metres

    Suction Condition: Flooded

    Special requirements: Zero chance of the product leaking into the atmosphere


    Pumping solution offered:

    Pump Type: Barrier AODD Pump Fitted with Guardian

    Model Number: TXB220 SMT-3ASY2”/1,5”L=320/295 4TLP

    Materials: 316L Stainless 0.5RA Polish

    Barrier Protection: Yes

    Supplying the pump fitted with our Barrier Protection and Guardian Monitoring System ticked all the safety boxes required by the site and allows the operator to be made aware of any ruptures in the diaphragms straight away. We overcame the potential risk of a breach to the atmosphere.

    These pumps have now been in service for the last five years with the customer performing PPM every twelve months due to the heavy-duty on the diaphragms. These pumps run 24 hours per day 7 days per week with the mud being pumped sometimes containing small solids. Special pumps like this once designed can be on site within 10 days of order placement, something unrivalled by other pumps manufacturers.

    If you require a similar pump or any assistance on fluid handling within your factory then please get in touch on 02380 252 325 or email us at [email protected]

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