
Commercial Ordering FAQ
How do I verify that 4381009170 – 2-1/2 in x 1-1/2 in Butt Weld 304 L Stainless Steel Concentric Reducer Schedule 10 is the correct replacement part for my equipment?
Check the OEM part number (4381009170) against your equipment nameplate or the manufacturer's repair parts list before ordering. If you are not sure, call the National Boiler Supply order desk at 850-565-3492 and we can cross-reference your equipment model and serial numbers before the order ships.
What are the shipping and freight options for Generic orders?
Standard parcel orders ship quickly from commercial distribution centers. Shipping is a $35 flat rate on orders under $999, and qualifying orders of $999 or more ship free by ground. Heavy equipment that has to move by LTL freight is quoted after the order is placed and confirmed with you before dispatch.
Can contractors or facility managers request a formal quote or use a Purchase Order (PO)?
Yes. National Boiler Supply works with commercial contractors, mechanical engineers, municipalities, and facility teams. Call 850-565-3492 for a formal quote, bulk pricing, or PO and tax-exempt order processing.
What if this Generic part is marked Call to Order or needed for an emergency repair?
Call our order desk at 850-565-3492. We can confirm factory lead times right away and arrange expedited air or hot-shot delivery when a repair cannot wait.
Order the 4381009170 Fitting from National Boiler Supply. Call our order desk at 850-565-3492 for a formal quote or a part number cross-check.
Product Overview
Constructed from 304L stainless steel, this conical pipe fitting enables a smooth axial transition that minimizes turbulence and pressure loss. It is equipped with butt weld connections on both ends, sized 2-1/2 inches and 1-1/2 inches respectively, and is compatible with Schedule 10 pipe wall thickness. The fitting measures 3 1/2 inches in overall length and conforms to specified pressure and temperature ratings.
Features
- Material: 304L stainless steel
- Concentric reducer shape for centerline continuity
- Connection type: Butt weld on both ends
- Nominal pipe sizes: 2-1/2" x 1-1/2"
- Fitting schedule: Schedule 10
- Conforms to ASTM A403/A standard (403M-88a)
- Overall length: 3 1/2 inches
Technical Specifications
| Manufacturer Part Number | 4381009170 |
|---|
OEM Part Verification: Confirm part number 4381009170 against your equipment nameplate or parts list before ordering. Our order desk can cross-check it for you.
Order Desk Support: Call 850-565-3492 for formal quotes, lead times, and volume pricing.
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
Apply for Trade Account & Terms →📋 Procurement & Shipping Notice
- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
- Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?
👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.