Fast Track to a Quote
Certification | Testing
Factory CertifiedRefund guarantee
24h refund guaranteeSecure Payment
PayPal Verified
GRACO Diaphragm Pump DB3911
Payment Methods

Need a Same-Day Quote?
Need help confirming model compatibility?
100% Original
Genuine OEM PartsFast Delivery
Shipped via FedEx / DHL / UPS12-Month Warranty
Worry-Free CoverageSecure Packaging
Safe & Reliable5,000+ Global Suppliers
Trusted by Professionals
Professional Model-Matching System
Send us your model numbers or nameplate details.
We will match your request with our 5,000+ verified suppliers and issue a quotation.
Air Inlet Thread Type NPT
Application Industrial
Ball Material PTFE
Center Section Material Aluminum
Diaphragm Compatible Material PTFE
Fluid Inlet Thread Gender Female
Fluid Inlet Thread Type NPT
Fluid Outlet Size (in) 1-1/2
Fluid Outlet Thread Type NPT
Fluid Section Material Stainless Steel
Manifold Configuration End Port
Manifold O-Ring Material PTFE
Material Stainless Steel
Maximum Air Consumption (SCFM) 125
Maximum Air Pressure (MPa) 0.827
Maximum Air Pressure (psi) 120
Maximum Cycle Rate (CPM) 200
Maximum Flow Rate (GPM) 100
Maximum Fluid Pressure (MPa) 0.827
Maximum Fluid Pressure (psi) 120
Maximum Operating Temperature (°F) 150
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: Does OKmarts offer volume discounts, corporate account tier pricing, or contract pricing?
A: Yes, we offer tailored B2B quotation frameworks. Procurement managers can submit a Request for Quote (RFQ) directly through the platform or contact a dedicated account manager to unlock tiered volume discounts and wholesale pricing structures.
Q: How does OKmarts ensure data privacy and cybersecurity regarding our corporate blueprints and proprietary purchase data?
A: We protect your data using enterprise-grade SSL encryption and secure cloud architectures. Any technical blueprints, system designs, or proprietary engineering files uploaded to our servers for customization or compatibility analysis are treated under strict confidentiality protocols and non-disclosure standards.
Q: Can OKmarts provide specialized industrial packaging for sea freight or long-term tropical storage?
A: Yes. For international shipping or extended warehouse storage in high-humidity regions, we offer upgraded industrial packaging options. This includes vacuum-sealed anti-static (ESD) barriers, desiccant packs, heavy-duty wooden crates, and shock-absorbent padding tailored to withstand harsh maritime transit conditions.
Related Products
Q&A
Q: Is it safe to shop online?
A: Yes, shopping online is generally safe. We take various security measures to protect your personal information and offer secure payment options.
Q: How can I view the size and specifications of a product?
A: On the product details page, you can find detailed information about size and specifications, including size charts, specific measurements, and more, to help you select the right product.
Q: How can I track the logistics information of a product?
A: Once your order is shipped, you will receive a confirmation email with tracking information. You can use this information to track your order through the logistics provider's website.
Customer reviews
Mar 09, 2022
Anonymous userAll was ok! No problems whatsoever.Helpful?(0)(0)







