HART INDUSTRIAL UNIONS LLC HART Industrial 1 1/4 in. FNPT Class 3000 316 Stainless Steel Threaded Union - FKM Seal, Dielectric Coating D-3131-6-V-316

HART Industrial D-3131-6-V-316 1 1/4 in. FNPT Class 3000 316 Stainless Steel Threaded Union - Viton Seal, Dielectric Coating The HART Industrial Class 3000 316 Stainless Steel Threaded Union with Dielectric Coating is engineered for high-performance in corrosive environments. Designed to prevent galvanic corrosion and electrolytic deterioration, this union features a thermo-baked epoxy polymer coating with over 600 volts/mil dielectric resistance. The flat face design ensures a turbulence-free connection, while the Viton O-ring provides excellent sealing and isolation. With precision machining and superior material versatility, this union is perfect for long-lasting, reliable service. Made in the USA. Note: Dielectric Coating applied to union tailpiece Features Dielectric Coating Protection: Prevents galvanic corrosion by eliminating current flow between dissimilar metals Turbulence-Free Fit: Ensures a smooth, turbulence-free fit across the seats for efficient flow O-Ring Isolation: Strategically positioned O-ring to avoid contact with media, offering protection from abrasives and erosion Precision Machining: Guarantees high-quality, leak-proof, and reliable performance in demanding applications Interchangeable End Connections: Compatible with various end connections such as threaded, socket weld, and butt weld, reducing additional fitting needs Corrosion Resistance: Resists wear, rust, and corrosion per ASTM B-117 salt fog tests, ensuring durability in harsh environments Maintenance-Free: Requires no additional tightening after the initial seal is established Specifications Size: 1 1/4 in. Connection Type: FNPT (Female Threaded) Material: 316 Stainless Steel Seal: Viton Class: 3000 Series: 3131 Dielectric Strength: >600 volts/mil Coating Thickness: 3-6 mil Downloads Product Literature (PDF Download)