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GRACO Diaphragm Pump D21255
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Popular Compatible Models
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Diaphragm Compatible Material TPE
Diaphragm Material TPE
Fluid Inlet Size (in) 3/8
Fluid Inlet Thread Gender Female
Fluid Inlet Thread Type NPT
Fluid Outlet Size (in) 3/8
Fluid Outlet Thread Gender Female
Fluid Outlet Thread Type NPT
Fluid Section Material Acetal
Manifold Configuration End Port
Manifold O-Ring Material PTFE
Material Acetal
Maximum Air Consumption (SCFM) 5.5
Maximum Air Pressure (MPa) 0.69
Maximum Air Pressure (psi) 100
Maximum Cycle Rate (CPM) 330
Maximum Flow Rate (GPM) 6.5
Maximum Fluid Pressure (MPa) 0.69
Maximum Fluid Pressure (psi) 100
Maximum Operating Temperature (°F) 150
Maximum Solid Size (in) 0.0625
Minimum Operating Temperature (°F) 40
Power Source Air
Seat Material Acetal
Why Global Buyers Choose O&Kmarts
- Access to a wide range of SKUs across multiple brands and series
- One RFQ connects you to 5,000+ global supplier quotes
- Better availability for urgent and hard-to-find parts
- Faster global delivery via FedEx / DHL / UPS
- Easier access to rare and high-value models
- Flexible sourcing for individual parts or complete solutions
- Lower MOQs and more adaptable buying options
- Multi-brand procurement in one order
- OEM replacement and alternative model solutions available
- Fewer intermediaries, ensuring more competitive pricing
Why Global Buyers Choose O&Kmarts
- Limited to fast-moving SKUs only
- Limited local market availability
- Inventory frequently fails to meet urgent demand
- Long replenishment cycles, often taking weeks
- Rarely stock high-value compressors (e.g. Copeland YHV119)
- Frequently require bundled purchases
- Rigid and difficult MOQ negotiations
- Limited brand selection
- Minimal or no customization capability
- Higher local distribution and markup costs
Top Questions from OKmarts Buyers
Q: What secure payment methods are supported for high-value international B2B transactions?
A: To ensure transaction security and accommodate standard corporate purchasing workflows, we support secure international Telegraphic Transfers (T/T Wire), major corporate Credit Cards, PayPal, and Letter of Credit (L/C) frameworks for large-scale procurement contracts.
Q: Does the OKmarts platform support Bill of Materials (BOM) uploading for rapid mass quoting?
A: Yes. Procurement teams do not need to search for individual parts manually. You can upload an Excel/CSV file containing your complete Bill of Materials (BOM) with part numbers, quantities, and brands. Our automated processing engine, backed by data engineers, will generate a comprehensive consolidated quote within 24 hours.
Q: Can I request a live video inspection of my specific order items before they leave the OKmarts facility?
A: Yes. To maximize peace of mind for high-value or critical orders, buyers can request a "Pre-Shipment Video Verification." Our warehouse team will film the unboxing, display the original manufacturer seals, show matching serial numbers, and verify the physical condition of the components in real-time or via a high-definition video link.
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Q&A
Q: Is there a replacement or compensation policy for damaged goods?
A: Yes, we have a comprehensive replacement and compensation policy for damaged goods. If you receive a damaged product, please contact our customer service team immediately, and we will arrange for a replacement or appropriate compensation.
Q: How can I request returns or refunds?
A: If you need to return or request a refund, you can submit a return or refund request on the order page and follow the platform's return policy. We will process your request as soon as possible and ensure that your rights are protected.
Q: Is it possible to pre-order upcoming products?
A: Yes, for upcoming popular products, we usually offer pre-order options. You can view the pre-order information on the product page and follow the instructions to place a pre-order.
Customer reviews
Mar 09, 2022
Anonymous userAll was ok! No problems whatsoever.Helpful?(0)(0)







