Yamada 771718 Inlet Manifold Elbow
The Yamada 771718 is a factory inlet manifold elbow used in Yamada air operated double diaphragm pumps using this inlet elbow. It joins the pump to the system, and every stroke of the pump passes through it.
They also crack at the bolt bosses when the joint has been overtightened or when pipework strain has been taken by the pump instead of by proper supports. A pump should never be used to support its own pipework, and a manifold that keeps cracking is telling you the pipework needs bracing.
Key Features
- Genuine Yamada replacement inlet manifold elbow
- Fits Yamada air operated double diaphragm pumps using this inlet elbow
- One per pump
- Machined sealing faces for positive joints to the pump body
- Direct replacement, no modification required
Applications
- Yamada air operated double diaphragm pumps using this inlet elbow
- Replacing an eroded, corroded or cracked manifold
- Rebuilding a pump after abrasive service
- Curing a persistent weep at a manifold joint
- Scheduled wet end overhauls
- Marine, industrial and chemical transfer duty
Specifications
- Brand: Yamada
- Manufacturer: Yamada America
- Manufacturer Part Number: 771718
- Part Type: Inlet Manifold Elbow
- Fits: Yamada air operated double diaphragm pumps using this inlet elbow
- Quantity Used: One per pump
- Condition: New
Frequently Asked Questions
Q: Can a cracked manifold be welded or glued?
It should not be. It is a pressure containing part with machined sealing faces, and heat or filler distorts those faces even when the repair itself holds.
Q: What causes cracks at the bolt bosses?
Overtightening, or pipework strain being carried by the pump. Support the pipework independently so the pump is not holding it up.
Q: Should the seals be replaced when fitting a new manifold?
Always. They are already out and a new manifold on old seals leaks in the place you have just repaired.
Q: Does the manifold material need to match the wet end?
Yes. It sees the same product at the same pressure, so it is supplied in the same material range as the rest of the wet end.
Not sure this is the right part? Send us a picture of your Pump Plate to https://www.clrmarine.com/Contact-Us and the CLR Marine team will confirm the correct inlet manifold elbow.
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