hp-Overflow valve with flange connection

For lubricating and hydraulic oils and many other self-lubricating, non-corrosive fluids. Fuel oil EL, L, M, S und ES, kerosine.

Maximum temperature of delivery fluid: 150° C Material: casing of hydraulic cast iron GGG 40. Piston, valve tip, spring of hardened steel.

Action: directly controlled, spring-loaded overflow valve to maintain a set operating pressure or a set maximum pressure.

Type	Pressure stage for type (Article-no.)	Flange DIN 2635 PN 40	Flow rate ²) l/h	Viscosity stage ²) cSt	Article-no.
Type	Pressure stage for type (Article-no.)	Flange DIN 2635 PN 40	Flow rate ²) l/h	Viscosity stage ²) cSt	Article-no.	FDR 15 – E	0 = 0,5 – 1,5 bar 1 = 1 – 4 bar 2 = 2 – 9 bar 3 = 6 – 25 bar 4 = 15 – 40 bar	DN 151)	30 – 600	2,8 to 480	0270001
FDR 20 – E	DN 201)	100 – 2000	2,8 to 480	0270002
FDR 25 – E	DN 251)	300 - 6000	2,8 to 480	0270003
FDR 32 – E	DN 321)	500 – 10000	2,8 to 480	0270004
FDR 50 – E 3)	DN 50	8000 – 20000	2,8 to 480	0270006

1) Counter flange with seal + screws must be ordered separately

2) Performance curve on page 29-31

3) Only with:

pressure stage 1: 1-4 bar

pressure stage 2: 2-9 bar

pressure stage 4: 6-40 bar

Overflow Valves

Type	a	b	DIN-Flange DIN 2635	Ø D	Ø k	Ø d₂
Type	a	b	DIN-Flange DIN 2635	Ø D	Ø k	Ø d₂	FDR 15	55	92	DN 15	95	65	14	Suitable counter flanges for PN 10 – 40 as DIN 2632-35
FDR 20	63	118	DN 20	105	75	14
FDR 25	80	134	DN 25	115	85	14
FDR 32	80	138	DN 32	140	100	18
FDR 50	140	205	DN 50	165	125	18

For assembly, start-up and maintenance, please adhere to the instruction manual that comes with each device!

hp TECHNIK Industrial Pumps