Free exhaust safety valves

Safety Valves SLK-Series are spring loaded pressure relieving devices, suitable for discharge of compressible fluids.
SLK-series safety valves are used to protect personnel and equipment by preventing excessive pressure accumulation.

Coi Technology offers a large range of screwed and flanged valves in a variety of sizes, materials and options.
The valves are of a full nozzle type and available in Brass or steel versions.

Model	Available connections	Setting range	Specs
SLK Type F	1/2″ – 3/4″ NPT/GAS	da 0,5 a 160 bar	Goto…
SLK Type H	1/4″ – 2″ NPT/GAS	da 0,5 a 50 bar	Goto…

Applications

Air Compressors
Steam generators / Boilers
Autoclaves
Technical gases
Natural gas and technical gas compressors

Materials

Brass
AISI 316L

Design

Construction	Free discharge
Seat sealing type	PTFE, PEEK, Metal to Metal
Connections	Screwed
Connections types	NPT, GAS/BSPP
Sizes	1/2” ÷ 2”
Orifices	8, 10, 14, 18, 25, 30, 38 mm
Characteristic	Full lift
Overpressure	10%
Blowdown	15%
Discharge coeff. Kd	0.937
Temperature range	-196°C +250°C
Set pressure range	0.5 ÷ 160 barg
Design standard	EN 4126-1