CUSTOM MANUFACTURING · PROJECT REVIEW
Stainless BSPT Union Fittings for Defined Pipe Connections
For a stainless union, the mating thread and seal matter as much as the size name. Relia reviews the selected 304 BSPT configuration, service conditions and checking requirements before the fitting is quoted for your connection.
RELIA · PRODUCT AND MANUFACTURING SUPPORT
Define the connection at both ends
Relia's union range combines a stainless cast body with threaded connection features. The referenced item describes 304 material and solution treatment after pickling, with customizable dimensions. Relia's connection review keeps nominal pipe size, thread standard and mating arrangement together. That gives you a more useful selection basis than the BSPT name or pitch considered on its own.
| Your requirement | Relia product and service scope |
|---|---|
| Material | 304 stainless steel |
| Thread reference | BSPT, 14 TPI, 1.814 mm pitch on this item |
| Surface description | Solution treatment after pickling |
| Pressure selection | Pipe class is not rated in the listing; establish project requirements |
02 · THREAD DEFINITION
Keep thread type and size together
- Thread identity
- State BSPT, nominal size and male/female connection.
- Matching configuration
- Check the applicable pitch and gauging basis.
BSPT, nominal size and thread pitch describe related but separate details. Keep the required male or female connection and applicable checking basis on the drawing or enquiry. The 14-TPI reference belongs to its listed configuration; it should not be applied to every fitting size or another thread system.
Technical notes
The product description lists solution treatment after pickling. Select the required final surface condition for the service, and preserve thread geometry through finishing. Wrench flats, nut access and the installed connection envelope also matter when replacing a union inside existing pipework.
MANUFACTURING ROUTE · FEATURES AND CONTROL
Preserve Thread Geometry Through Casting and Finishing
The cast blank provides the union body and wrenching shape, with stock for the finished connection. The manufacturing route then establishes the thread and the mating/sealing features, followed by the selected treatment and cleaning. Relia's enquiry identifies the applicable thread gauges and useful engagement requirements. Taper, pitch, thread length and the chosen sealing arrangement must work together; polishing or treatment should not leave debris or alter the fit. A separate defined test establishes any order-specific leakage acceptance.
- Cast the blank304 body and wrenching geometry
- Finish the connectionSpecified nominal size, BSPT thread and mating features
- Treat and cleanRequired surface condition and clear threads
- Gauge and testAgreed thread acceptance and leakage scope
04 · SERVICE CONDITIONS
Review duty against an agreed rating basis
- Actual service
- Provide the fluid, temperature and pressure requirement.
- Selection basis
- Agree suitability for the specific fitting configuration.
Share the fluid, temperature and pressure requirements relevant to your application. The listed fitting does not provide a rated pipe class, so suitability needs a defined technical basis for the selected configuration. We discuss the information and acceptance requirements needed for that review rather than inferring a rating from appearance.
05 · ACCEPTANCE
Check the interfaces that create the connection
Use the applicable thread gauges and define useful thread engagement where the connection requires it. The listing describes high-pressure applications but records the pipe class as Not Rated. Supply the working pressure, temperature and medium so the required rating and test evidence can be agreed for your order.
06 · FIRST FIT
Confirm a replacement in the actual mating arrangement
- Existing connection
- Compare the thread and mating sealing surfaces.
- Repeat reference
- Retain the accepted configuration after trial fit.
A familiar size name does not establish that every connection detail matches the existing assembly. Compare the selected thread and mating surfaces with the current arrangement, and include the required trial-fit review. Retain the accepted configuration for future orders rather than relying on a product photograph alone.
07 · PURCHASING RECORD
Retain the agreed configuration in the order
Keep the material, thread, size, supplied components and required checks together in the order reference. Identify any packaging or protection needed for the finished threads. That gives both teams a clear record of the fitting being requested and the technical decisions supporting its supply.
Technical notes
Record the mating pipe thread and sealing arrangement before ordering. BSPT tapered threads differ from parallel BSP and NPT connections. Two fittings that start to screw together can still have incompatible geometry or an unsuitable seal, so identify the standard and gauge requirement explicitly.
| Order reference | Information to retain |
|---|---|
| Connection | Thread, size and mating definition |
| Material | Accepted grade and condition |
| Verification | Required checks and records |
| Delivery | Quantity, included items and protection |
RELIA · YOUR NEXT PROJECT
Bring the mating-connection details into the enquiry
Send the fitting reference, connection drawing or clear photos, required quantity and service conditions. Identify the mating thread and the checks your team requires. We can review the selected union configuration and clarify the technical scope before the quotation is agreed.
Start with these project details
- Fitting reference and quantity
- Thread and mating connection
- Fluid, temperature and pressure
- Required fit and checking basis
Shuyuan Road, Qingdao, Shandong, China
