303121 Suction Valve Assembly; AR, M14
The 303121 Suction Valve Assembly is a suction valve for the fluid end of a reciprocating pump, admitting fluid into the pump on the intake stroke as part of the one-way valve set that controls flow direction. It is sized to fit the M14 pump, and the "AR" designation indicates it is abrasion resistant, intended for abrasive service. This is an aftermarket replacement part supplied under part number 303121 and ships at about 5 lb.
What it is
A fluid-end valve assembly controls one-way flow through the pump — a suction valve admits fluid on the intake stroke and a discharge valve releases it on the pressure stroke. It typically comprises the valve body, seat, spring and guide.
Pump compatibility
- M14
Specifications
| Property | Value |
|---|---|
| Weight | 5.00 lb (≈ 2.27 kg, converted) |
Replacement / interchange
Aftermarket replacement cross-referencing 303121.
FAQ
- Which pump does the 303121 suction valve fit?
- It is sized for the M14 pump. Only this fitment is listed.
- What does "AR" mean for the 303121 valve?
- AR stands for abrasion resistant, indicating the suction valve is intended for abrasive service where the pumped fluid carries solids. This is stated in the product name.
- What does the 303121 suction valve do?
- It admits fluid into the fluid end on the intake stroke, opening to let fluid in and closing to prevent backflow as part of the pump's one-way valve set.
Related parts
All brand names, model numbers and part numbers are used for identification and cross-reference only and do not imply original-equipment manufacture. This is an aftermarket replacement part.
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