Description
The GRACO DT4377 is a stainless steel air-operated double diaphragm pump designed for reliable fluid transfer in demanding industrial environments. It features a stainless steel center section and body, with nitrile (BN) balls and diaphragm, making it suitable for handling a wide range of fluids. This pump is intended for use in applications requiring robust, leak-free, and maintenance-friendly fluid transfer solutions.
Key Features:
- Air-operated double diaphragm pump
- Husky 1590, 1-1/2″ NPT
- Stainless steel center section and body, nitrile (BN) balls and diaphragm
- Compatible with a wide range of industrial fluids, especially those requiring stainless steel and nitrile wetted parts
- ATEX rated (explosion-proof for hazardous environments)
- Lube-free operation
- Epoxy-coated exterior for corrosion resistance
- Stainless steel and nitrile wetted parts for chemical compatibility
- Reliable, leak-free design
- Easy maintenance and repair
Applications:
Ideal for transferring fluids in chemical, mining, agricultural, and general industrial applications where robust, leak-free, and maintenance-friendly pumps are required.
Installation Notes:
- Using genuine GRACO parts ensures optimal performance, reliability, and safety, and maintains warranty coverage.
- Ensure proper alignment of inlet and outlet connections
- Use appropriate thread sealant for NPT connections
- Check air supply for correct pressure and cleanliness
- Inspect diaphragm and balls for wear during installation and maintenance
- Follow GRACOs recommended maintenance schedule
- Regularly inspect and replace worn components
- Keep pump and surrounding area clean to prevent contamination
- Use only compatible fluids as specified by GRACO






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