Stainless steel AISI 316L precision relief valve, suitable for compressed air and gas.


Relief valve for pressure up to 1,2 bar (17,5psi).
Inlet and outlet connections by flanges screwed to the body:
G 3/4-F;
G 1-F;
G 1 1/4-F;
G 1 1/2-F
1 1/4″NPT-F.
1 1/2″NPT-F
Flanged connections EN or ASME available on request.

The relief valve opens when the inlet pressure increases above the set point initially regulated by the adjusting screw and it closes when the pressure goes down under the set point. Set point pressure is controlled by a rubber diaphragm.
Available the ATEX version. Brand CE ExII2GDcIICX.
For use in potentially explosive atmospheres zones:
1, 21, 2, 22 (not in mines and zone 0).
The product complies with the directive 97/23/CE PED.


Technical data

CompatibilityCompressed air | Tecnhical gases and their mixtures | Liquids | Oils
IN/OUT ConnectionG 3/4”-F | G 1”-F | 3/4”NPT-F | 1”NPT-F | UNI EN 1092-1 | ASME B16.5
Working Temperature-4+176 °F standard | other temperature ranges on request
Maximum Allowable Pressure (PS)6 bar
CV (CEI EN 60534-2)3,6 US gal/min
Relief Pressure Ranges0 ÷ 300 | 0 ÷ 700 | 0 ÷ 1200 mbar
Weight~29,7 lb
Plug Leakage Class“A” class (UNI EN 12266-1)
Pressure Gauge Connection1/4”-F | 1/8”-F (GAS / NPT) (only on request)
CertificationsPED 2014/68/UE | ATEX 2014/34/UE | EAC TR CU 010
Internals and Body MaterialStainless steel AISI 316L
Seals MaterialEPDM | FPM | FVMQ | FFKM
Spare Parts KitO-rings | assembled plug | assembled diaphragm

Technical design