Brass high pressure relief valves, suitable for compressed air, gas and liquid.


Brass relief valve for inlet pressure up to 200 bar (2900 psi) in the standard version.
Inlet and outlet connections:
VSF133 : 1/4”
VSF1100 e VSF1200 : 3/8”
Alternative threads 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 piston.
The product complies with the directive 97/23/CE PED.


Technical data

CompatibilityCompressed air | Tecnhical gases and their mixtures | Liquids | Oils
IN/OUT ConnectionG 1/4”-F (VSF133) | G 3/8”-F (VSF1200)
Working Temperature-4+140 °F standard | From -76 up to +608 °F on request
Maximum Allowable Pressure (PS)Standard 330 bar
CV (CEI EN 60534-2)0,081 US gal/min (VSF133) | 0,75 US gal/min (VSF1200)
Relief Pressure Ranges10 ÷ 100 | 20 ÷ 200 bar (available on request up to 400 bar)
Weight~6,2 lb (VSF133) | 7,7 lb (VSF1200)
Plug Leakage Class“A” class (UNI EN 12266-1)
CertificationsPED 2014/68/UE | EAC TR CU 010
Internals and Body MaterialChromed brass (VSF133) | Pickled brass (VSF1200)
Seals MaterialEPDM | FPM | FVMQ | FFKM
AccesoriesWall mounting bracket
Spare Parts KitO-rings | assembled plug

Technical design