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RedR TSS gravatar image
RedR TSS

The most obvious solution is to use a higher rated pipe for the section from the final break-pressure tank to the storage reservoir (if not the whole system). Polyethylene comes in 10 BAR and 16 BAR ratings, as well as the 6 BAR that is being suggested at the moment. Perhaps 6 BAR PVC pipes are being used, in which case a different material could be considered for the final stretch. From my work in Tajikistan I know that MDPE pipes are manufactured in Russia, Iran and (I think) Uzbekistan. However better quality MDPE pipe is available in Pakistan (by Sun International, in Lahore) if it could be transported through Afghanistan and Tajikistan - which, admittedly, could be a nightmare!

Failing this, the continuously flowing tank inlet would work. Factors to consider: 1) There may be a need to close off water in the upstream pipeline for other reasons (e.g. distribution system repairs); therefore you could install a gate valve above the last BP tank upstream of the tank. Beware that if a valve is closed on the downstream side of this BP tank then the weight of water in the pipe between the BP tank and the tank will collapse, and likely damage the pipe itself. 2) People may need to do repairs on the tank at some stage - if you install a Tee above the tank with a "run to waste" option, then people may be able to set up temporary storage and/or tap stands during future repairs. 3) Make sure the tank overflow discharges well away from the tank to avoid undermining it.

Regards, Mark Buttle

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No.2 Revision

The most obvious solution is to use a higher rated pipe for the section from the final break-pressure tank to the storage reservoir (if not the whole system). Polyethylene comes in 10 BAR and 16 BAR ratings, as well as the 6 BAR that is being suggested at the moment. Perhaps 6 BAR PVC pipes are being used, in which case a different material could be considered for the final stretch. From my work in Tajikistan I know that MDPE pipes are manufactured in Russia, Iran and (I think) Uzbekistan. However better quality MDPE pipe is available in Pakistan (by Sun International, in Lahore) if it could be transported through Afghanistan and Tajikistan - which, admittedly, could be a nightmare!

Failing this, the continuously flowing tank inlet would work. Factors to consider: 1) There may be a need to close off water in the upstream pipeline for other reasons (e.g. distribution system repairs); therefore you could install a gate valve above the last BP tank upstream of the tank. Beware that if a valve is closed on the downstream side of this BP tank then the weight of water in the pipe between the BP tank and the tank will collapse, and likely damage the pipe itself. 2) People may need to do repairs on the tank at some stage - if you install a Tee above the tank with a "run to waste" option, then people may be able to set up temporary storage and/or tap stands during future repairs. 3) Make sure the tank overflow discharges well away from the tank to avoid undermining it.

Regards, Mark Buttle