$9.28
It is the plastic knob used to operate the gas ballast valve on your vacuum pump. If your old knob is broken, cracked, or missing, this is the direct OEM replacement part
Knob, Jacking, Edwards, Part# 25908198
Knob, Jacking, Edwards, Part# 25908198
This knob is commonly used on Edwards E2M28 and E2M30 rotary vane pumps. It may also fit other similar models.
Knobs like this can break over time. The plastic can become brittle or crack. The knob can also fall off if the retaining screw gets loose.
You might need this knob if:
The old knob is cracked or broken.
The knob spins freely without turning the valve.
The knob is missing from your pump.
You are refurbishing an old pump.
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10 in stock
10 in stock
10 in stock
10 in stock
10 in stock
10 in stock
10 in stock
10 in stock
10 in stock
10 in stock
10 in stock
10 in stock
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