
The rod pump is composed of barrel assembly, plunger assembly, standing valve assembly and seating assembly.
Product advantages:
The maintenance operation is convenient and can be completed by lifting the sucker rod
The tubing and casing connection can be achieved by lifting the rod string, and perform well washing, steam injection, and sand washing operations.
Product limitations:
The rod pump body needs to pass through the tubing, so the oil well with the same size tubing has a smaller pump displacement.
Structure of pump
The main spare parts of subsurface sucker rod pumps are barrel, plunger and valve.
Symbol | Description | Tubing Size & Pump Size | |||
2 3/8x1 1/4 | 2 3/8x1 1/2 | 2 7/8x2 | 3 1/2x2 1/2 | ||
Complete Pump Designation | |||||
20-125 | 20-150 | 25-200 | 30-250 | ||
B21 | Bushing, Valve Rod | B21-20 | B21-20 | B21-25 | B21-30 |
R11 | Rod, Valve | R11-20 | R11-20 | R11-25 | R11-30 |
C12 | Cage, Top Plunger | C12-125 | C12-150-20 | C12-200 | C12-250 |
P21 | Plunger, One Piece | P21-125 | P21-150 | P21-200 | P21-250 |
C13 | Cage, Closed, Pin Plunger | C13-125 | C13-150 | C13-200 | C13-250 |
V11 | Traveling Valve | V11-125 | V11-150 | V11-200 | V11-250 |
P12 | Plug Seat | P12-125 | P12-150 | P12-200 | P12-250 |
G11 | Guide, Valve Rod | G11-20 | G11-20 | G11-25 | G11-30 |
S11 | Seating Mandrel, Cup | S11-20 | S11-20 | S11-25 | S11-30 |
S12 | Seating Cup | S12-20 | S12-20 | S12-25 | S12-30 |
S13 | Seating Cup Ring | S13-20 | S13-20 | S13-25 | S13-30 |
S14 | Seating Cup Nut | S14-20 | S14-20 | S14-25 | S14-30 |
S15 | Seating Cup Bushing, Top Anchor | S15-20- 125 | S15-20 | S15-25 | S15-30 |
B11 | Barrel, Thin Wall | B11-125 | B11-150 | B11-200 | B11-250 |
C14 | Cage, Closed Barrel | C14-20- 125 | C14-20 | C14-25 | C14-30 |
V11 | Standing Valve | V11-175 | V11-175 | V11-225 | V11-250 |
B22 | Bushing, Seat, Barrel Cage | B22-20 | B22-20 | B22-25 | B22-30 |
N11 | Nipple, Seating, Cup Type | N11-20 | N11-20 | N11-25 | N11-30 |

















Yes,we have our own factory for manufacturing and we have the long history in this field as the China top brand.
2.Can you provide free sample?
Yes, we can provide samples in our stock for free, customer just need to bear the shipping fee.
3. Hhow about the quality guarantee ?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
4.what can you buy from us?
OCTG / Pumping Unit / Sucker Rod Pump / Wellhead and Christmas Tree / Casing and Coupling /Pup joint/Crossover/Centralizer