Butt-Weld x Male NPT Adapter - 4.000" OD Butt-Weld x 4" MNPT - (19WB) - 304 Stainless

Butt-Weld x Male NPT Adapter (19WB) – 304 Stainless Steel

PNW Sanitary Butt-Weld x Male NPT Adapters (19WB) provide a secure, sanitary transition between welded tubing systems and threaded NPT equipment. Manufactured from 304 stainless steel and 3-A Certified, these fittings deliver reliable, hygienic performance in food, beverage, dairy, brewery, cosmetic, nutraceutical, and pharmaceutical processing environments.

The butt-weld end permanently joins to sanitary tubing, while the precision-machined male NPT thread connects to compatible female fittings for a tight, leak-resistant seal. Each adapter is polished to a 32Ra sanitary finish to promote smooth product flow, easy cleaning, and long-term durability.

Features

• 3-A Sanitary Certified
• 304 stainless steel construction
• Polished 32Ra ID/OD sanitary finish
• Available in 1/2"–4" tubing sizes
• Reliable weld-end and male NPT connection
• Suitable for CIP/COP cleaning processes

Applications & Compatibility

Designed for OEMs, fabricators, and maintenance professionals who require a clean, permanent weld connection to sanitary tubing with a threaded NPT interface for equipment or instrumentation. Dimensionally compatible with standard sanitary weld fittings and NPT components from leading industry brands.

Quality & Material Verification

All PNW Sanitary fittings undergo in-house Positive Material Identification (PMI) using the SciAps X-550 handheld XRF spectrometer to verify alloy chemistry and ensure full traceability.

Cross-Reference