PRESSURE RELIEF VALVES
Compact Relief Valve DN6
Relief valves to blow out non-poisonous and non-fl ammable gases into the atmosphere in order to protect pressure tanks against overpressure. Please note: Only relief valves that have been set and sealed with lead (plumbed) by us can be delivered with the component symbols, it is thus absolutely necessary to indicate the setting pressure in bar. As functional test, relief valves may be aerated by the way of pulling the haul-off bolt. Repairs may only be carried out by the manufacturer.
Working Temperature: -10C to +150C Maximum Working Pressure: 24 bar (PN24)
Technical Data • Connection thread: G1/4, G3/8
• Setting range: 4,5 to 24 bar (5 steps) • Opening pressure difference: <10% • Closing pressure difference: <10% • Material: Brass • Seal: Viton Important: The supply connection to the relief valve should not be <DN6, the pressure drop in the supply connection not 3%.
L
Male, Thread, BSPP
Dimensions mm L
Set At Bar
9168
Thread
Hex
Exhaust Capacity Air The exhaust capacities indicated in the table are the minimum values reached when air pressure is raised by 10% above the set pressure.
7
469.23-5.0BAR 469.24-7.0BAR 469.24-9.0BAR 469.25-11.0BAR 469.26-16.0BAR 469.27-20.0BAR 469.33-5.0BAR 469.34-7.0BAR 469.34-9.0BAR 469.35-11.0BAR 469.36-16.0BAR 469.37-20.0BAR
1/4” 1/4” 1/4” 1/4” 1/4” 1/4” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8”
5.0 7.0 9.0
65 65 65 65 65 65 65 65 65 65 65 65
17 17 17 17 17 17 19 19 19 19 19 19
11.0 16.0 20.0
Exhaust Flow Capacity (normal condition) m 3 /h l/m
Set Pressure Bar
6
60
1000 1833 2083 2583
5.0 7.0 9.0
10 11 14
110 125 155
11.0 16.0 20.0
Intermediate values can be interpolated.
More variations available. Special set pressures, body materials & large threads.
Type 1776
Male, 1/4” NPT 0090
All type 1776 valves are pre-set and sealed to prevent tampering. Pre-set pressure relief valves are precision manufactured to open at the pre-set pressure and discharge fl uid until pressure drops to acceptable levels to protect against equipment damage or personal injury. • Dual certifi cation of ASME BPVC Section XIII and UKCA/CE for PE(S)R 2016 and PED 2014/68/EU • Automatically vents at selected pressure • Automatically resets when pressure returns to hnormalh • Brass body with stainless steel internal components Please note: Removal of the pull ring will invalidate ASME certifi cation but will still conform to UKCA/CE
Set Pressure PSI
SCFM
1776K-0-05 1776K-0-10 1776K-0-15 1776K-0-20 1776K-0-30 1776K-0-40 1776K-0-50 1776K-0-60 1776K-0-75
5
9
10 15 20 30 40 50 60 75
11 13 15 19 24 28 33 39
Tech Sheet 835
Working Temperature: -18°C to +200°C
*Dual certifi cation applies from 30 PSI upwards. Pressure ranges from 5 to 20 PSI will offer no accreditations that meet UK/European standards
More variations available. Special set pressures, Body materials, valve serialisation & larger threads. T est certifi cates are available on request at an additional cost.
986
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