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The overflow valves with thread connection are used for actuation type E: with adjustment screw.
The valves are suitable for use with lubricating and hydraulic oils and many other self-lubricating non-corrosive fluids. They deliver excellent heating oils EL, L, M, S and ES, coal tar oils and kerosene.
Material
casing of hydraulic cast iron (GGG 40); certificate on request; piston, valve tip, spring of hardened steel
Details
Summary:
hp-Overflow valve,
flow range: . . . . . (l/h)
pressure stage . . . . , adjustable . . . . . (bar)
Type: . . . . .
| Model | Possible pressure stages for each model |
Connection thread 2) | Flow range l/h |
Viscosity range >cSt |
Item No. |
| B – P – E / _ G 1/4″ 1) | 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 bis 480 | 210000 |
| B – P – E / _ | G 3/8″ | 15 – 160 | 2,8 bis 480 | 210002 | |
| B – G – E / _ | G 1/2″ | 30 – 600 | 2,8 bis 480 | 210003 | |
| B – GH – E / _ 3) | G 3/4″ | 100 – 2000 | 2,8 bis 480 | 210004 | |
| B – GHG – E / _ | G 1″ | 300 – 6000 | 2,8 bis 480 | 210005 | |
| B – GHG – E / _ G 1 1/4″ | G 1 1/4″ | 500 – 10000 | 2,8 bis 480 | 210006 |
1) Not pressure stage 0
2) Pipe thread G…A DIN ISO 228-1
3) Not pressure stage 0, for pressure stage 1: 0.5 – 3.5 bar, all further pressure stages according to table
For very dirty heavy oils, the overflow valves may be fitted or retrofitted with a piston axial nut (heavy oil piston) at an additional cost.
| Model | Item No. | Ø for piston and hole |
| BP | 840750 | 20/2,5 |
| BG/FDR 15 | 840752 | 20/5,0 |
| BG/FDR 15 | 840754 | 20/7,5 |
| BGH/FDR 20 | 840756 | 30/10 |
| BGHG 1“/FDR 25 | 840758 | 35/15 |
| BGHG 11/4“/FDR 32 | 840760 | 35/25 |
| FDR 50 | 840762 | 50/30 |
Model with regulating screw
After removing cover screw 1
on the regulating screw, the pressure is increased by turning clockwise with a screwdriver or with an allen key. It is decreased by turning counterclockwise.
| Model | a | b1 | c1 | d1 | d2 | f1 | max. Pipe | NW | f2 | Adjustment path h at pressure stage | |||
| 0 + 1 | 2 | 3 | 4 | ||||||||||
| P – 1/4″ | 55 | 65 | 37 | 36 | 52 | G 1/4″ | 10 x 1 | 8 | G 1/8″ | 15 | 12 | 8 | 7 |
| P | 55 | 65 | 37 | 36 | 52 | G 3/8″ | 12 x 1 | 10 | G 1/8″ | 15 | 12 | 8 | 7 |
| G | 55 | 65 | 37 | 36 | 52 | G 1/2″ | 18 x 1,5 | 15 | G 1/8″ | 15 | 12 | 8 | 7 |
| GH | 63 | 65 | 43 | 50 | 70 | G 3/4″ | 22 x 1,5 | 20 | G 1/4″ | 15 | 10 | 8 | 5 |
| GHG | 80 | 62,5 | 56 | 56 | 86 | G 1″ | 28 x 1,5 | 25 | G 1/4″ | 20 | 17 | 9 | 6 |
| GHG – 1 1/4″ | 80 | 62,5 | 56 | 56 | 86 | G 1 1/4″ | 35 x 2 | 30 | G 1/4″ | 20 | 17 | 9 | 6 |
For installation, operation and maintenance, follow the operating instructions that come with each piece of equipment.
Need additional infos? Please contact us
hp-TECHNIK GmbH Industrial Pumps, Conveying units and plant construction
