What is a ball seat and what does it do?

In a ball-valve fluid end, the ball element seats against this stationary seat; together they form the one-way seal that controls flow on the suction and discharge strokes.

What part number does it cross-reference to?

It cross-references to FMC Bean part number 1284740 and is supplied as an aftermarket replacement rather than an OEM-manufactured part.

SEAT BALL; W11

SEAT BALL; W11 — Other Pump Part aftermarket replacement part

The Seat, Ball for W11 (part 1284740) is a replacement pump part used in the fluid end of FMC Bean W11 series ball-valve pumps, where a ball element seats against it to control one-way flow on the suction and discharge strokes. It fits FMC Bean W11 and W1122BCD pumps. The seat measures about 1.57 in by 1.57 in with a 1.50 in depth and weighs about 0.29 lb. It is offered as an aftermarket replacement cross-referenced to FMC Bean part number 1284740; the brand and number are used for identification only and do not imply factory manufacture.

What it is

This is a replacement part for the listed reciprocating pump models, supplied to match the original component's form and fit.

Pump compatibility

W11
W1122BCD

Specifications

Property	Value
Weight	0.29 lb (≈ 0.13 kg, converted)
Width	1.57 in / 4 cm
Height	1.57 in / 4 cm
Depth	1.50 in / 3.8 cm

Manufacturer technical notes

Seat Ball for FMC Bean W11 Series (SKU:1284740), forged 42CrMo alloy steel + induction hardening (HRC58-62), API 7K compliant, pressure-resistant ≥70MPa, salt spray tested 1000hrs corrosion-free, fatigue life >1×10⁶ cycles, compatible with W11 series pumps, NACE MR0175 H₂S resistant.

Verbatim from the Dongli product page on dlhddrilling.com.

Replacement / interchange

Aftermarket replacement cross-referencing FMC Bean 1284740.

FAQ

Which pumps does the W11 ball seat fit?: It fits FMC Bean W11 and W1122BCD pumps.
What is a ball seat and what does it do?: In a ball-valve fluid end, the ball element seats against this stationary seat; together they form the one-way seal that controls flow on the suction and discharge strokes.
What part number does it cross-reference to?: It cross-references to FMC Bean part number 1284740 and is supplied as an aftermarket replacement rather than an OEM-manufactured part.

Related parts

See all Other Pump Part →

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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