Overflow Valves

hp TECHNIK Industrial Pumps

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hp-Overflow valves with thread connection

2.1

Overflow Valves

Mode of operation E; with adjustment screw

For lubricating and hydraulic oils and many other self-lubricating, non-corrosive fluids.

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.)		 Connection-thread 1) Flow rate 2)
l/h		 Viscosity stage 2)
cSt		 Article-no.
B – PP – E - 0 = 0,5 – 1,5 bar
1 = 1 – 4 bar
2 = 2 – 9 bar
3 = 6 – 25 bar
4 = 15 – 40 bar		 G 1/4“ 6 – 120 2,8 to 480 0210001
B – P – E - G 3/8“ 15 – 160 2,8 to 480 0210002
B – G – E - G 1/2“ 30 – 600 2,8 to 480 0210003
B – GH – E – 3sup>) G 3/4“ 100 – 2000 2,8 to 480 0210004
B – GHG – E - G 1“ 300 – 6000 2,8 to 480 0210005
B – GHG – R 1 1/4“ – E - G 1 1/4“ 500 – 10000 2,8 to 480 0210006

1) Cyl. withworth pipe threading G…A DIN ISO 228
2) Performance curve on page 24-26.
3) No pressure stage 0, instead 1: 0.5 – 3.5 bar. Refer to chart for all other pressure stages.

Overflow Valves

Type Article-no. Ø/Drilling
BP 0840750 20/2,5
BG/FDR 15 0840752 20/5,0
BG/FDR 15 0840754 20/7,5
BHG/FDR 20 0840756 30/10
BGHG 1“/FDR 25 0840758 35/15
BGHG 11/4“/FDR 32 0840760 35/25

Overflow Valves

Size chart

Type a b1 c1 d1 d2 f1 Max.
pipe		 NW f2 Adjustable range h at stage:
0 + 1 2 3 4
PP 44 36 34 26 40 G 1/4“ 10 x 1 8 G 1/8“ 10 6 6 1,5
P 55 51 37 36 52 G 3/8“ 12 x 1 10 G 1/8“ 15 12 8 7
G 55 51 37 36 52 G 1/2“ 18 x 1,5 15 G 1/8“ 15 12 8 7
GH 63 57 43 50 70 G 3/4“ 22 x 1,5 20 G 1/4“ 15 10 8 5
GHG 80 71 60 56 86 G 1“ 28 x 1,5 25 G 1/4“ 20 17 9 6
GHG – 1 1/4“ 80 71 60 56 86 G 1 1/4“ 35 x 2 30 G 1/4“ 20 17 9 6

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

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