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Current Category
Valves > Pressure Relief Valves





1/2" Direct Acting Pressure Relief Valve Polypropylene with EPDM O-Ring and 302 S/Steel spring - 420 kPa

1/2" Direct Acting Pressure Relief Valve Polypropylene with EPDM O-Ring and 302 S/Steel spring - 420 kPa

This is a terrific pressure relief valve made in the USA by Spraying Systems and suitable for use at pressures to 60 psi or 420 kPa.   EPDM 'O' ring and 302 s/steel spring, large adjusting nut on the top does not need a spanner and, 1/4" female BSPT pressure gauge port makes this a very versatile valve.   The valve remains shut until the pressure in the system reaches the "set" pressure at which time the valve opens.   This one has a 1/2" male BSP inlet on the base and a 1/2" female BSP outlet on the side and, is adjustable to 420 kPa.

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1/2" Direct Acting Pressure Relief Valve Polypropylene with EPDM O-Ring and 302 S/Steel spring - 1,050 kPa

1/2" Direct Acting Pressure Relief Valve Polypropylene with EPDM O-Ring and 302 S/Steel spring - 1,050 kPa

This is a terrific pressure relief valve made in the USA by Spraying Systems and suitable for use at pressures to 150 psi or 1,050 kPa.   EPDM 'O' ring and 302 s/steel spring, large adjusting nut on the top does not need a spanner and, 1/4" female BSPT pressure gauge port makes this a very versatile valve.   The valve remains shut until the pressure in the system reaches the "set" pressure at which time the valve opens.   This one has a 1/2" male BSP inlet on the base and a 1/2" female BSP outlet on the side and, is adjustable to 1,050 kPa.

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1/2" Direct Acting Pressure Relief Valve Polypropylene with VITON O-Ring and 316 S/Steel spring - 420 kPa

1/2" Direct Acting Pressure Relief Valve Polypropylene with VITON O-Ring and 316 S/Steel spring - 420 kPa

This is a terrific pressure relief valve made in the USA by Spraying Systems and suitable for use at pressures to 60 psi or 420 kPa.   VITON 'O' ring and 316 s/steel spring, large adjusting nut on the top does not need a spanner and, 1/4" female BSPT pressure gauge port makes this a very versatile valve.   The valve remains shut until the pressure in the system reaches the "set" pressure at which time the valve opens.   This one has a 1/2" male BSP inlet on the base and a 1/2" female BSP outlet on the side and, is adjustable to 420 kPa.

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15mm Bronze & Brass Pressure Relief Valve - 10-500 kPa Low Pressure

15mm Bronze & Brass Pressure Relief Valve - 10-500 kPa Low Pressure

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 15mm LOW PRESSURE valve has an adjustment range between 10 and 500 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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15mm Bronze & Brass Pressure Relief Valve - 200-1,000 kPa

15mm Bronze & Brass Pressure Relief Valve - 200-1,000 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 15mm HIGH PRESSURE valve has an adjustment range between 200 and 1,000 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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15mm Bronze & Brass Pressure Relief Valve - 500 - 1000 kPa

15mm Bronze & Brass Pressure Relief Valve - 500 - 1000 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 15mm valve has an adjustment range between 500 and 1,000 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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15mm Bronze & Brass Pressure Relief Valve - 800-1,600 kPa

15mm Bronze & Brass Pressure Relief Valve - 800-1,600 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 15mm HIGH PRESSURE valve has an adjustment range between 800 and 1,600 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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3/4" Direct Acting Pressure Relief Valve Polypropylene with EPDM O-Ring and 302 S/Steel spring - 1,050 kPa

3/4" Direct Acting Pressure Relief Valve Polypropylene with EPDM O-Ring and 302 S/Steel spring - 1,050 kPa

This is a terrific pressure relief valve made in the USA by Spraying Systems and suitable for use at pressures to 150 psi or 1,050 kPa.   EPDM 'O' ring and 302 s/steel spring, large adjusting nut on the top does not need a spanner and, 1/4" female BSPT pressure gauge port makes this a very versatile valve.   The valve remains shut until the pressure in the system reaches the "set" pressure at which time the valve opens.   This one has a 3/4" male BSP inlet on the base and a 3/4" female BSP outlet on the side and, is adjustable to 1,050 kPa.

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3/4" Direct Acting Pressure Relief Valve Polypropylene with VITON O-Ring and 316 S/Steel spring - 420 kPa

3/4" Direct Acting Pressure Relief Valve Polypropylene with VITON O-Ring and 316 S/Steel spring - 420 kPa

This is a terrific pressure relief valve made in the USA by Spraying Systems and suitable for use at pressures to 60 psi or 420 kPa.   VITON 'O' ring and 316 s/steel spring, large adjusting nut on the top does not need a spanner and, 1/4" BSPT pressure gauge port makes this a very versatile valve.   The valve remains shut until the pressure in the system reaches the "set" pressure at which time the valve opens.   This one has a 3/4" male BSP inlet on the base and a 3/4" female BSP outlet on the side and, is adjustable to 420 kPa.

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20mm Bronze & Brass Pressure Relief Valve - 0 - 200 kPa Low Pressure

20mm Bronze & Brass Pressure Relief Valve - 0 - 200 kPa Low Pressure

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 20mm LOW PRESSURE valve has an adjustment range between 0 and 200 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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20mm Bronze & Brass Pressure Relief Valve - 10 - 500 kPa Low Pressure

20mm Bronze & Brass Pressure Relief Valve - 10 - 500 kPa Low Pressure

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 20mm LOW PRESSURE valve has an adjustment range between 10 and 500 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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20mm Bronze & Brass Pressure Relief Valve - 200 - 1000 kPa

20mm Bronze & Brass Pressure Relief Valve - 200 - 1000 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 20mm valve has an adjustment range between 200 and 1,000 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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20mm Bronze & Brass Pressure Relief Valve - 500 - 1000 kPa

20mm Bronze & Brass Pressure Relief Valve - 500 - 1000 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 20mm valve has an adjustment range between 500 and 1,000 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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20mm Bronze & Brass Pressure Relief Valve - 600 - 1,600 kPa

20mm Bronze & Brass Pressure Relief Valve - 600 - 1,600 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 20mm valve has an adjustment range between 600 and 1,600 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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25mm Bronze & Brass Pressure Relief Valve - 0 - 500 kPa Low Pressure

25mm Bronze & Brass Pressure Relief Valve - 0 - 500 kPa Low Pressure

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 25mm LOW PRESSURE valve has an adjustment range between 0 and 500 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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25mm Bronze & Brass Pressure Relief Valve - 200 - 1,000 kPa Medium Pressure

25mm Bronze & Brass Pressure Relief Valve - 200 - 1,000 kPa Medium Pressure

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 25mm MEDIUM PRESSURE valve has an adjustment range between 200 and 1,000 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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25mm Bronze & Brass Pressure Relief Valve - 500 - 1,000 kPa Medium Pressure

25mm Bronze & Brass Pressure Relief Valve - 500 - 1,000 kPa Medium Pressure

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 25mm MEDIUM PRESSURE valve has an adjustment range between 500 and 1,000 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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25mm Bronze & Brass Pressure Relief Valve - 800 - 1600 kPa

25mm Bronze & Brass Pressure Relief Valve - 800 - 1600 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 25mm valve has an adjustment range between 800 and 1,600 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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32mm Bronze & Brass Pressure Relief Valve - 0 - 400 kPa

32mm Bronze & Brass Pressure Relief Valve - 0 - 400 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 32mm LOW PRESSURE valve has an adjustment range between 0 and 400 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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32mm Bronze & Brass Pressure Relief Valve - 200 - 1,000 kPa

32mm Bronze & Brass Pressure Relief Valve - 200 - 1,000 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 32mm valve has an adjustment range between 200 and 1,000 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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32mm Bronze & Brass Pressure Relief Valve - 500 - 1000 kPa

32mm Bronze & Brass Pressure Relief Valve - 500 - 1000 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 32mm valve has an adjustment range between 500 and 1,000 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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32mm Bronze & Brass Pressure Relief Valve - 1,000 - 1,600 kPa

32mm Bronze & Brass Pressure Relief Valve - 1,000 - 1,600 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 32mm valve has an adjustment range between 1,000 and 1,600 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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40mm Bronze & Brass Pressure Relief Valve - 0 - 500 kPa

40mm Bronze & Brass Pressure Relief Valve - 0 - 500 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 40mm valve has an adjustment range between 0 and 500 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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40mm Bronze & Brass Pressure Relief Valve - 200 - 1000 kPa

40mm Bronze & Brass Pressure Relief Valve - 200 - 1000 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 40mm valve has an adjustment range between 200 and 1,000 kPa with a maximum inlet pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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40mm Bronze & Brass Pressure Relief Valve - 500 - 1000 kPa

40mm Bronze & Brass Pressure Relief Valve - 500 - 1000 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 40mm valve has an adjustment range between 500 and 1,000 kPa with a maximum inlet pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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40mm Bronze & Brass Pressure Relief Valve - 1,000 - 1,600 kPa

40mm Bronze & Brass Pressure Relief Valve - 1,000 - 1,600 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 40mm valve has an adjustment range between 1,00 and 1,600 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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50mm Bronze & Brass Pressure Relief Valve - 100 - 1000 kPa

50mm Bronze & Brass Pressure Relief Valve - 100 - 1000 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 50mm valve has an adjustment range between 100 and 1,000 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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50mm Bronze & Brass Pressure Relief Valve - 200 - 1000 kPa

50mm Bronze & Brass Pressure Relief Valve - 200 - 1000 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 50mm valve has an adjustment range between 200 and 1,000 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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50mm Bronze & Brass Pressure Relief Valve - 500 - 1000 kPa

50mm Bronze & Brass Pressure Relief Valve - 500 - 1000 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 50mm valve has an adjustment range between 500 and 1,000 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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50mm Bronze & Brass Pressure Relief Valve - 1,000 - 1,600 kPa

50mm Bronze & Brass Pressure Relief Valve - 1,000 - 1,600 kPa

Our series 80 pressure relief valves are fully automatic and have an enviable reputation for reliable operation under even the most difficult installations.   The right angle valve has a bronze base and brass bonnet as standard, female BSP inlet and outlet and, pressure adjustment bolt with locking nut.   Suitable for use with water, steam and air between minus 10 and +220 degrees C.   The 50mm valve has an adjustment range between 1,000 and 1,600 kPa with a maximum pressure of 1,600 kPa.   Valves now have a Teflon seat for added performance.

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Pink Teflon Plumbers Tape for thread sealing without leaks

Pink Teflon Plumbers Tape for thread sealing without leaks

Our pink teflon plumbers tape is manufactured by Fedseal and is definitely a far superior product to all of those very thin white tapes.   "Teflon 002" is manufactured to a very high standard and so it is of uniform size and thickness over the complete roll.   With a thickness of 0.1mm it is up to 3 times thicker than some cheaper white versions on the market.   "Teflon 002" should be used on all Nyglass, stainless steel, brass, cast iron, aluminium, gunmetal, ductile iron, pvc and most other BSP style threads.   "Teflon 002" on our Hansen range of Nyglass fittings generally only requires 4 or 5 turns of "Teflon 002" to provide a leakproof seal.   Rolls of "Teflon 002" are 12mm wide x 0.1mm thick x 10m long and all of the tape can be used.



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Cimseal thick liquid P.T.F.E. seal for all metal to metal fittings - particularly NPT

Cimseal thick liquid P.T.F.E. seal for all metal to metal fittings - particularly NPT

Our Cimseal is manufactured in Italy for the Cimberio company, Cimberio is one of the worlds largest valve manufacturers with an excellent reputation for high quality valves and fittings.   I have been using the "Cimseal" liquid P.T.F.E. for many years where an excellent seal is required on metal to metal threads and you will find Cimseal on every tap that we have installed on a fixed thread as this makes it so easy to position the tap perfectly vertically.   Once made and allowed to dry, the seal is very difficult to break by hand and that is particularly usefull in public areas.   I recommend the use of Cimseal on all metal to metal fittings for a secure watertight seal.   Note:   Cimseal cannot be used on plastic to plastic or plastic to metal as it will never cure.



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