API-RWBC, Rod, Stationary Thin Wall Barrel, Cup Bottom Anchor Pump
Working principle: RWBC rod pump is equipped with a cup seating nipple N11, cup seating nipple N11 connection on the tubing string, down to the bottom of the well with the tubing string. Plunger assembly connection on the sucker rod string and with the pump overall down to cup seating nipple N11 position together , pump with fixed inside the cup seating nipple N11, Plunger assembly with the sucker rod string up and down
reciprocating movement to achieve pumping work.
RWBC advantage: if the pump appeared quality problem, need not put forward the tubing string, only need put the whole pump forward well through the sucker rod string together,operation is simple.
Main parts process and material:
Pump barrel: plain carbon steel plating (A1),low alloy steel nitride (B5).
Plunger: 1045 steel spraying (B1), 1045 steel spraying (B2), 1045 steel chrome plating (A1), 1045 steel double chrome plating (A2).
Valve ball and seat: stainless steel (A1), cobalt chromium (B2), tungsten carbide (C1), nickel and carbon compounds (C2), titanium carbide (C3).
Other accessories: plain carbon steel, low alloy steel, stainless steel, brass and other materials.
Technical parameter list:
| specification |
pump diameter (mm) |
barrel length (m) |
Plunger length (m) |
stroke length (m) |
Extension length (m) |
tubing size EUE |
sucker rod size |
| 20-125RWBC |
Φ31.75 |
2.1-10.4 |
0.3-8.0 |
1.2-9.0 |
/ |
2-3/8" |
CYJ16
CYJ19 |
| 20-150RWBC |
Φ38.10 |
2-7/8" |
| 25-200RWBC |
Φ50.80 |
2-7/8" |
| 30-250RWBC |
Φ63.50 |
3-1/2" |
Audited Supplier 
Audited Supplier 
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