The Dereve DF61 or 6100 series safety relief valve with atmospheric discharge is suitable for compressed air or inert gases.

This valve is widely used on compressed air cylinders and pressure vessels and is available with 1/4" up to 1" BSPT Connections and has discharge capacity ranging from 10 to 466 l/s.

Certain set pressure and connections sizes only are listed here. Other connection size and set pressure combinations are avilable on request - these valves are UK manufactured and lead time is normally a few days.

All safety valves in the DF61 range are PED approved and CE marked.

The safety valves are supplied with a test certificate which shows the batch number which is also stamped on the valve. An example of the test certificate is availabe in the datasheets section on this webpage.

This relief valve has lifting knob easing gear - this allows the user or an inspector to lift the valve by hand and prove that it is functioning and not siezed shut.

Capacity shown is for air at 15 deg C in std litres/second at 10% over the set pressure and is a guide only.

Materials	Brass Body with
	Stainless Steel Springs
Connection	1/2" BSPP Male
	3/4" BSPP Male
	1" BSPP Male
Max Temperature	180 °C
Accordance With	BS6759 Part 2: 1984

Dereve Ref	Pressure	Capacity	Thread
6100/06/H/9.0	9.0 bar	67 l/s	1/4" BSPT
6100/10/H/6.9	6.9 bar	55 l/s	3/8" BSPT
6100/10/J/9.0	9.0 bar	67 l/s
6100/10/J/11.0	11.0 bar	81 l/s
6100/10/L/15.0	15.0 bar	108 l/s
6100/10/L/16.0	16.0 bar	115 l/s
6100/15/E/3.0	3.0 bar	27 l/s	1/2" BSPT
6100/15/G/5.0	5.0 bar	40 l/s
6100/15/G/5.3	5.3 bar	42 l/s
6100/15/G/5.5	5.5 bar	44 l/s
6100/15/H/7.0	7.0 bar	54 l/s
6100/15/H/7.9	7.9 bar	59 l/s
6100/15/H/8.6	8.6 bar	64 l/s
6100/15/J/9.7	9.7 bar	72 l/s
6100/15/J/10.0	10.0 bar	74 l/s
6100/15/J/11.0	11.0 bar	81 l/s
6100/15/J/11.2	11.2 bar	83 l/s
6100/15/J/12.0	12.0 bar	88 l/s
6100/15/K/13.0	13.0 bar	94 l/s
6100/15/L/16.0	16.0 bar	108 l/s
6100/20/G/5.0	5.0 bar	60 l/s	3/4" BSPT
6100/20/G/5.3	5.3 bar	65 l/s
6100/20/H/7.9	7.9 bar	89 l/s
6100/20/H/8.6	8.6 bar	96 l/s
6100/20/J/9.7	9.7 bar	107 l/s
6100/20/J/11.2	11.2 bar	122 l/s
6100/20/K/14.0	14.0 bar	145 l/s
6100/20/L/16.0	16.0 bar	161 l/s
6100/25/G/5.0	5.0 bar	97 l/s	1" BSPT
6100/25/H/7.9	7.9 bar	144 l/s
6100/25/H/8.6	8.6 bar	155 l/s
6100/25/J/9.7	9.7 bar	172 l/s
6100/25/J/11.2	11.2 bar	198 l/s
6100/25/J/12.0	12.0 bar	211 l/s
Capacity shown is for air at 15 °C