BACK UP RING
Catalogue part number OT2BG35 for FLUTEK K3V / K5V tandem pumps. Drawing position 792.
Catalogue context & configuration notes
OT2BG35 is the FLUTEK catalogue part number for BACK UP RING in the K3V112 / K5V140 (20-33 t) tandem pump family. It sits at drawing position 792 in the 700 group. It is a service-replacement item, not an assembly, and is picked against the pump serial rather than the machine alone. We confirm the drawing position and the current number against your pump nameplate before dispatch, and single pieces ship from Guangzhou.
BACK UP RING is a K3V112 / K5V140 catalogue line in the DT / DTP table, printed on catalogue page 17 and 19. On that page it sits next to position 789 (BACK UP RING) and position 806 (NUT), out of 53 numbered lines in the table. One set takes 2. Every configuration of the family uses this number, DT and DTP included.
Reply within 12 working hours / Single pieces welcome / Send a photo of the old part if you are unsure of the number.
Pump family drawing — use the position number to identify the catalogue line. This is an assembly reference, not a photograph of the individual part.
On this page
Other catalogue numbers at this drawing position
Numbers listed in the same catalogue table for this item, or for the same item on the other model in the family (for example K3V112 vs K5V140, or DT vs DTP). Send the number stamped on your old part and we confirm which one you need.
Same drawing position, other part numbers
Position 792 is shared across the families, but the catalogue number changes with the family and with the control variant (DT / DTP / DTH / SH). Compare before ordering across models - and if two numbers look identical, send us the nameplate and we confirm which one your pump carries.
Machine-family references — confirm fitment
OT2BG35 belongs to the K3V112 / K5V140 family, and the fitment table below lists 135 published machine models whose pump is in that family: 18 are listed here.
SANY (11)
XCMG (9)
117 more models in the same family are listed on the machine pages.
Fitment is a starting point, not a promise: send the nameplate photo and we confirm the position and the current number before dispatch.
Frequently ordered with this part
The lines below come from the same pump family and the same catalogue group as OT2BG35. Tick what you need - the list is kept in this browser while you work through the parts pages, and the button sends every ticked number in one message.
Nothing is sent automatically: the button opens WhatsApp with the numbers you ticked, and you press send. Seals and servo parts move most often on these pumps, which is why they are listed first.
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Not sure which part failed?
A part number tells you what to order; the diagnosis guides tell you whether that part is what failed. Start from the area that matches the symptom, then come back to the number.
Pump and pressure supply
Pressure, delivery, wear and the case drain test - the checks that decide between a pump and a valve.
Valve and pilot control
Sticking spools, low pilot pressure and proportional solenoid faults.
Oil, filtration and the system
Contamination, water, overheating and the decisions that follow.
Source of these figures
Frequently Asked Questions
What is OT2BG35 used for?
BACK UP RING - catalogue line for the FLUTEK K3V / K5V tandem pump family. It sits at drawing position 792.
Which machines use OT2BG35?
The catalogue lists OT2BG35 in K3V112 / K5V140. The family table must be checked for the exact pump variant. A machine-family reference does not establish fitment for an individual part. Confirm the full pump code, drawing position 792 and the old part before ordering.
Is there a cross-reference or a superseded number for OT2BG35?
Other numbers at the same drawing position can refer to different pump models or control variants. Sharing a table or position is not evidence of interchangeability or supersession. Send the old part number, complete pump code and photographs so the catalogue line can be checked before a replacement is quoted.
Can I buy one piece?
Single-piece enquiries are welcome. Send the part number, quantity and destination; availability, price and dispatch timing are confirmed in the quotation.