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Large Area Watering

Pressure Regulators

Pressure Regulators and Pressure Relief Valves

Pressure Relief Valves

There are several ways to regulate pressure in a watering system.  A pressure relief valve is used to divert water out of the system should the pressure be exceeded.  Normally this water would be diverted back in to the water tank.  The pressure that the relief valve opens at is adjustable and is ideal for systems that rely on a large pump that service both high and low flow situations.  The pressure relief valve will prevent damage to the pump should a fault occur or on low flow zones it will prevent the water in the pump heating up or for serious damage to occur to the pump or the pipe. 

Pressure Regulators

Pressure regulators are not the same as pressure relief valves.  I pressure regulator is installed inline and it controls the amount of pressure that a particular zone will work out.  AS an example if the maximum pressure that is required for a drip or spray line is 4 bar then we would want to make sure that the pressure in this line stays below 4 bar and would probably set the pressure regulator to 3 bar so as to make sure that damage does not occur.  So unlike a pressure relief valve which allows water to divert a pressure regulator controls the pressure




Model Image Item Name Price
Z7787
Bermad Adjustable Pressure Regulator 3/4" M - F

Bermad Adjustable Pressure Regulator 3/4" M - F

Bermad Adjustable Pressure Regulator     3/4" male - 3/4" female thread Used for standard flow situations Flow range 0.2 - 5 cubic metres per hour Operating pressure 0.7 - 9 bar Adjustable pressure from 0.8 - 2.5 bar  ...
Qty Discounts Off Price
1-2
£15.99
3-9
£14.39
10-19
£13.59
20+
£12.79
£15.99
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Z7783
Bermad Adjustable Pressure Regulator 3/4" M - F Low Flow

Bermad Adjustable Pressure Regulator 3/4" M - F Low Flow

Bermad Adjustable Pressure Regulator Bermad Adjustable pressure reducer 3/4" male - 3/4" female thread Used for standard flow situations Flow range 0.03 - 5 cubic metres per hour Operating pressure 0.7 - 9 bar Adjustable pressure from 0.8...
£14.99
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PREG6mm
Eindor Pressure Regulator 1X Male 1 X Female End

Eindor Pressure Regulator 1X Male 1 X Female End

Eindor Pressure Regulator The Eindor pressure regulator is used to control pressure to the dripper or sprayer that is being used.  The regulator is preset to 2 bar 2 bar 6mm F x 6mm M. For flows 35-240 l/h. Made in Greece  UV...
£0.89
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1355-20
Master Unit 1000 1355

Master Unit 1000 1355

Gardena Master Unit 1000 The GARDENA Master Unit 1000 is the starter component of the GARDENA Micro-Drip-System. The Master Unit reduces initial pressure to an operating pressure of approx. 1.5 bar for optimal operation of the connected Drip Heads...
£16.99  £15.29
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Z3429A
Adjustable Pressure Relief Valve 3/4"

Adjustable Pressure Relief Valve 3/4"

Brass Pressure Relief Valve 3/4" Female BSPF   Brass pressure relief valve allows low flow zones to operate in a safe way without damaging the pump or the pipe work.  One should be fitted per system when using high pressure high flow...
£44.99
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Z3429B
Adjustable Pressure Relief Valve 1" Female BSP

Adjustable Pressure Relief Valve 1" Female BSP

Brass 1" British Standard Pipe Thread Adjustable Pressure Relief Valve This is a high quality brass pressure relief valve which can be used in high pressure water systems and will make sure that the pressure in the system stays within the...
£49.99
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Z3429C
Adjustable Pressure Relief Valve 11/4"

Adjustable Pressure Relief Valve 11/4"

Brass 11/4" BSPF Adjustable pressure relief valve Brass pressure relief valve allows low flow zones to operate in a safe way without damaging the pump or the pipe work.  One should be fitted per system when using high pressure high flow...
£129.99
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Z3429D
Adjustable Pressure Relief Valve 11/2"

Adjustable Pressure Relief Valve 11/2"

Brass 11/2" BSPF Adjustable pressure relief valve Brass pressure relief valve allows low flow zones to operate in a safe way without damaging the pump or the pipe work.  One should be fitted per system when using high pressure high flow...
£139.99
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Z3429E
Adjustable Pressure Relief Valve 2"

Adjustable Pressure Relief Valve 2"

Adjustable Brass Pressure Relief Valve 2" BSPF Brass pressure relief valve allows low flow zones to operate in a safe way without damaging the pump or the pipe work.  One should be fitted per system when using high pressure high flow water...
£169.99
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