303039 Gasket, Valve Cover, EW440/446
Part 303039 is a valve cover gasket that seals the bolted joint at the valve cover to prevent leakage of pumped fluid and pressure. It fits the EW440 and W-446 pumps and is supplied as an aftermarket replacement for part number 303039, matching the original part's form and fit. The gasket weighs about 0.11 lb.
What it is
A valve cover closes the valve bore in the fluid end, retaining pressure and allowing the valve assembly to be removed for service.
Pump compatibility
- EW440
- W-446
Specifications
| Property | Value |
|---|---|
| Weight | 0.11 lb (≈ 0.05 kg, converted) |
| Width | 14.0 cm |
| Height | 14.0 cm |
| Depth | 0.40 in / 1.1 cm |
Manufacturer technical notes
Buckhorn 303039 Gasket, Valve Cover EW440/446, sulfur-cured NBR (ASTM D2000-01 7BG910), Shore A90±3 hardness, pressure-resistant ≥25MPa, operating temp -40°C~120°C, phosphated surface (salt spray tested >1200hrs corrosion-free), API 7K compliant, compatible with 35CrMo forged valve covers.
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing 303039.
FAQ
- Which pumps does gasket 303039 fit?
- It fits the EW440 and W-446 pumps.
- What does this gasket seal?
- It seals the valve cover joint to contain pumped fluid and prevent pressure leakage.
- What part number does this replace?
- It is an aftermarket replacement for part number 303039, supplied to match the original part's form and fit.
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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