Flojet 20131-001 Screw Kit, 6 Pieces
The Flojet 20131-001 is a genuine screw kit containing six screws for Flojet pumps. Six is the count used where a component is held by a ring of fasteners — typically a valve chamber or pump head, clamped evenly around its perimeter.
That evenness is the whole reason the count matters. A pump head seals against a gasket or an elastomer face, and the clamping load has to be distributed uniformly around the joint. Tighten the screws unevenly, or leave one out because it was lost or damaged, and the chamber distorts slightly — enough to open the seal at the point furthest from the remaining fasteners. A pump reassembled with five screws instead of six very often weeps at exactly the spot where the sixth should have been.
Having the complete set also means all six are the same age and condition. A mixed set, where one screw has been replaced with something similar and the rest are original and corroded, clamps unevenly whatever care is taken tightening it. Tighten in a cross pattern rather than going round the circle, and stop at firm — plastic bosses strip with very little warning.
Key Features
- Genuine Flojet (Xylem) fasteners — correct thread, length, head and material
- Six screws per kit — a complete matched set rather than a mixed handful
- Even clamping around a valve chamber or pump head joint
- Correct material resists seizing in a permanently damp assembly
- Useful as spares so a dropped fastener never halts a repair
Applications
- Flojet pump head and valve chamber reassembly
- Renewing a corroded or mismatched set of head screws
- Curing a joint that weeps at one point after a rebuild
- Routine pump service and overhaul
- Marine, RV, dockside and mobile water systems
Specifications
- Brand: Flojet (Xylem)
- Manufacturer Part Number: 20131-001
- Part Type: Screw kit
- Pack Quantity: 6
- Condition: New
Frequently Asked Questions
Q: Why tighten in a cross pattern?
Because it pulls the component down evenly. Going round the circle progressively tilts the part and can leave the first screws loose by the time you reach the last.
Q: Does it matter if one screw is a different type?
More than it seems. A different head or thread clamps to a different load at the same feel, so the joint ends up unevenly compressed even though every screw feels tight.
Q: How do I know if I have over-tightened?
The screw suddenly feels smoother and no longer builds resistance, which usually means the boss thread has stripped. At that point the housing rather than the screw needs attention.
Q: Should the screws be checked after a few hours of running?
It is a sensible habit after any rebuild. Gaskets and elastomer faces settle slightly, and a gentle re-check often finds a small amount of movement.
Not sure this is the right part? Send us a Picture of the pump plate on your pump and the CLR Marine team will confirm this is the correct screw kit for the position you are working on.
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