RDS-series Deep borehole cylinder
Individual parts
A – Rust Retainer
B – Stainless Steel Rod Socket (SK)
C – Galv. Nut (-16)
D – Rod Support (SS)
E – SS Cylinder Tube (RDS-6)
F – SS Rod (RDS-17)
G – Valve Stop (-13NY)
H – SS Spring (-10)
I – Piston Valve (-12)
J – 2 x Rings (-8)
K – Double Piston (RDS-11)
L – SS Nylock Nut (-9N)
M – Valve Stop (-3b2)
N – Seat (-1)
O – O-Ring (-4)
P – Nut & Bolt (5b & 5ny)
Q – SS Spring (as50-10)
R – Washer (3c)
S – Splitpin (3d)
Sets
The RDS models are specially designed for boreholes with a total head of more than 60 meters and have a stroke length of 360mm (14″). The stainless steel tube is longer than the standard cylinder and operates with a double ring piston. Rod supports and the unique Jooste Foot Valves are also fitted to the RDS Models. A rust retainer is fitted on the last galvanised rod, before the cylinder, preventing rust or sand from settling in the cylinder.
(The rust retainer is supplied standard with the RDS-Series Cylinders but can be fitted to the AS-Series as well.)
Foot Valve
The unique design of the foot valve has a low frictional coefficient while maintaining a secure seal.
RDS-Series Cylinders
| View | Code | Diameter | Tube length | Delivery (l/h) | Parts colour |
|---|---|---|---|---|---|
 |
AS-50RDS |
50 (2") | 550 (20") | ± 500 | Brown |
 |
AS-60RDS |
60 (2.5") | 550 (20") | ± 770 | Yellow |
 |
AS-70RDS |
70 (3") | 550 (20") | ± 1,100 | Purple |
 |
AS-80RDS |
80 (3.5") | 550 (20") | ± 1,370 | Green |
 |
AS-100RDS |
100 (4") | 550 (20") | ± 2,100 | Orange |