PRESSURE RELIEF VALVES
Pressure Relief Valves (Fig 500L)
Applications: Nabic pressure relief valves are intended for use where pressure tightness is required on the discharge side of the valve. They are ideal for pump relief, bypass relief, outside installations, and inflammable fluid
Construction: the valves are of gunmetal construction with top-guided copper alloy parts, chrome vanadium spring and PTFE to metal seating. O-Ring seals ensure pressure tightness at cover and cap joints. Available options are stainless steel springs, high pressure versions and Viton seat design.
Please Note: due to pressure setting and certification of this product, normal delivery wil be up to 3 working days (manufacturers stock permitting), although a quicker service may be available if required. Please contact our sales team.
Features: • Resilient PTFE seating design • High degree of seating tightness • Suitable for liquids and gases • Top-guided working parts
Working Temperature: -20°C to +195°C Maximum Working Pressure: 12.5 bar
• Pressure tight on discharge side • Designed and tested to BS 6759 • Flange inlets available
7
BSPP Inlet x BSPP Outlet
Inlet Thread
Outlet Thread
Set Pressure Bar
Inlet Thread
Outlet Thread
Set Pressure Bar
Inlet Thread
Outlet Thread
Set Pressure Bar
0115
0115
0115
500L-10-1 500L-10-1.5 500L-10-2 500L-10-2.5 500L-10-3 500L-10-3.5 500L-10-4 500L-10-5 500L-10-5.5 500L-10-6 500L-10-6.5 500L-10-8 500L-10-9.5 500L-10-10 500L-10-11 500L-10-12 500L-10-12.5 500L-15-1 500L-15-3 500L-15-4 500L-15-5 500L-15-5.5 500L-15-6 500L-15-6.5 500L-15-7 500L-15-7.5 500L-15-8.5
500L-15-10 500L-15-10.5 500L-15-11 500L-15-11.5 500L-20-1.5 500L-20-2.5 500L-20-3 500L-20-3.5 500L-20-4 500L-20-5 500L-20-5.5 500L-20-6 500L-20-6.5 500L-20-7 500L-20-7.5 500L-20-8 500L-20-8.5 500L-20-9 500L-20-10 500L-20-11 500L-20-11.5 500L-20-12 500L-20-12.5 500L-25-1.5 500L-25-2 500L-25-2.5 500L-25-3
500L-25-3.5 500L-25-4 500L-25-5.5 500L-25-7 500L-25-7.5 500L-25-8 500L-25-8.5 500L-25-11 500L-25-12.5 500L-32-3 500L-32-3.5 500L-32-5 500L-32-7.5 500L-32-8.5 500L-32-10 500L-32-11 500L-40-1.5 500L-40-3 500L-40-3.5 500L-40-4 500L-40-7 500L-40-7.5 500L-40-12 500L-50-3.5 500L-50-7 500L-50-12.5
3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2”
1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4”
1
1/2” 1/2” 1/2” 1/2” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4”
3/4” 3/4” 3/4” 3/4”
10
1” 1” 1” 1” 1” 1” 1” 1” 1”
1.1/4” 1.1/4” 1.1/4” 1.1/4” 1.1/4” 1.1/4” 1.1/4” 1.1/4” 1.1/4” 1.1/2” 1.1/2” 1.1/2” 1.1/2” 1.1/2” 1.1/2” 1.1/2”
3.5
1.5
10.5
4
2
11
5.5
2.5
11.5
7
3
1” 1” 1” 1” 1” 1” 1” 1” 1” 1” 1” 1” 1” 1” 1” 1” 1” 1” 1”
1.5 2.5
7.5
3.5
8
4 5
3
8.5
3.5
11
5.5
4 5
12.5
6
1.1/4” 1.1/4” 1.1/4” 1.1/4” 1.1/4” 1.1/4” 1.1/4” 1.1/2” 1.1/2” 1.1/2” 1.1/2” 1.1/2” 1.1/2” 1.1/2”
3
6.5
5.5
3.5
8
6
5
9.5
6.5
7.5 8.5
10 11 12
7
7.5
10 11
8
12.5
8.5
2” 2” 2” 2” 2” 2” 2”
1.5
1 3 4 5
9
3
10 11
3.5
4 7
11.5
5.5
12
7.5
6
12.5
12
6.5
1” 1” 1” 1”
1.1/4” 1.1/4” 1.1/4” 1.1/4”
1.5
2” 2” 2”
2.1/2” 2.1/2” 2.1/2”
3.5
7
2
7
7.5 8.5
2.5
12.5
3
Tech Sheet 20438
We have listed all the popular sizes and pressure ratings, however other variations are available.
Individual test certificates to be requested at the time of orde
990
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