hose burst safety valveseries HB

design hose burst safety valve according to EN ISO 4414, protects personnel and the environment frompotential damage caused by bursting of compressed air systems or tubes, safe for operations andagainst adjustment, TÜV certified 01-02-0145

function If a hose or pipe rupture occurs, the system immediately throttles the flow except for a small residualflow. Undamaged parts of the compressed air system remain under pressure. The affected segmentor the hose can be replaced safely. After the repair, the rest of the affected segment will slowly filleduntil the working pressure level is reached. Once this level is reached, the system opens the lineback to normal operation.

connection G1/4"...G2" female/female respectively G1/4"...G1/2" female/male according to ISO228/1materials body aluminum, piston POM (G1/4"...G1/2") respectively aluminum (G3/4"...G2"), spring stainless

steel, seals NBRapplication filtered compressed air

medium temperature for G1/4"...G1/2": -20...+80°Cfor G3/4"...G2": -20...+120°C

inlet pressure max. 18barpressure drop 0,1...0,4barclosing values see tableflow direction is marked by an arrowtype of fixing installed into rigid pipework

mounting position horizontal/verticalspecial versions other closing values, stainless steel

information The hose burst safety valve must always be mounted on an fixed air supply system (pipe, fittings,etc.) - Never mount it on the tube itself!

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dimensions

G1/4"..G1/2" female/male G1/4"...G1/2" female/female G3/4"...G2" female/female

connection DN[mm]

A[mm] B ØC SW pressure range

[bar] connection type weight[g] type

1/4" 6 58 49 - 22 0...18 female/male 36 HB01-143/8" 10 70 58 - 27 0...18 female/male 62 HB01-381/2" 12 79 64 - 30 0...18 female/male 85 HB01-121/4" 6 49 - - 22 0...18 female/female 30 HB02-143/8" 10 58 - - 27 0...18 female/female 58 HB02-381/2" 12 65 - - 30 0...18 female/female 78 HB02-123/4" 19 76 - 36 30 0...18 female/female 107 HB02-341" 25 100 - 50 41 0...18 female/female 300 HB02-102" 40 130 - 80 70 0...18 female/female 775 HB02-20

functionality

1 The air is supplied through P1.2 The air flow passes through the piston (1) and flows through the seat (3).3 The flow is decelerated by longitudinal grooves on the upper surface of the piston.4 In the case of super elevated flow the air can not pass fast enough through the piston and presses it against the underlying spring

(2) in the direction of the seat.5 The maximum flow rate is shown in the diagrams "closing values"6 If this value is exceeded, the air supply will be blocked automatically.

closing values

P1 [bar] Δp [bar] closing valuesQn [Nl/min]

typeHB..-14

4 0,4 5605 0,4 6106 0,4 6708 0,4 760

10 0,4 83015 0,4 101018 0,4 1100

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P1 [bar] Δp [bar] closing valuesQn [Nl/min]

typeHB..-38

4 0,19 7905 0,20 8706 0,19 9308 0,20 1080

10 0,21 118015 0,20 143018 0,20 1620

P1 [bar] Δp [bar] closing valuesQn [Nl/min]

typeHB..-12

4 0,35 22405 0,35 25306 0,35 27108 0,36 3020

10 0,37 338015 0,37 412018 0,36 4520

P1 [bar] Δp [bar] closing valuesQn [Nl/min]

typeHB..-34

4 0,24 61305 0,24 55206 0,25 44708 0,24 4070

10 0,25 338015 0,25 412018 0,25 4520

P1 [bar] Δp [bar] closing valuesQn [Nl/min]

typeHB..-10

4 0,20 39005 0,20 42306 0,21 46108 0,22 5220

10 0,21 586015 0,20 730018 0,21 8080

P1 [bar] Δp [bar] closing valuesQn [Nl/min]

typeHB..-20

4 0,13 92905 0,13 103206 0,13 113608 0,13 12920

10 0,13 1428015 0,13 1722018 0,13 18540

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selection of the right hose burst safety valve1 choosing the right size is very important. the flow must be sufficient for normal operation and in case of a hose or pipe breaks, the

hose burst safety valve must closing. if the flow is too low, the hose burst safety does not close.the correct size must be confirmed with a test function.the hose burst safety valve closes upon reaching the corresponding flow with a tolerance of / - 10%.

2 for the size selection (sizing) are relevant:pressure on the hose burst safety valve (P1)air consumption of the tool at which pressureinner diameter of the tubelength of tubingnominal diameter of compressed air parts (pressure regulators, couplings, coupling plug) before and after the hose burst safetyvalve

3 air consumption to the tool:the maximum air consumption of the tool and the pressure required are crucial to selecting the correct hose burst safety valve.if the air consumption of the tool is not known, this have to be measured. theoretical information is insufficient and can causemalfunctions.with the flow rate and the closing value table the right hose burst safety valve can be determined now.a general rule is that the hose burst safety valve should bring at least 20% more flow, as the tool needs during normal operation.

4 inner diameter of the tube:as a guideline for the minimum inner diameter, the following values has to be observed.1/4" = 6mm, 3/8" = 8mm, 1/2" = 13mm, 3/4" = 16mm, 1" = 19mm, 2" = 40mm

5 length of tubing:very long hoses can cause a pressure drop at the end of the hose and conduce to a reduction of the flow. thus, the function of thehose burst safety valve is no longer guaranteed.by enlarging of the inner diameter of the hose the length can be extended.

6 nominal diameter of compressed air parts (pressure regulators, couplings, coupling plug):the nominal diameter of the pneumatic parts must correspond at least to the nominal diameter (DN) of the hose burst safety valve.

7 example:air consumption tool = 700Nl/min +20% safety = 840Nl/min, pressure 6barresult: For this example a hose burst safety valve of the size G3/8" is correct.

application drawing

illustrations are for information only and are non-bindingall designs, configurations, measurements and materials are subject to change without prior notice

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