HART Industrial O-3131-6-V-316 1 1/4 in. FNPT Class 3000 316 Stainless Steel Threaded Union - FKM Seal, Orifice Plate

HART Industrial O-3131-6-V-316 1 1/4 in. FNPT Class 3000 316 Stainless Steel Threaded Union - Viton Seal, Orifice Plate

The HART Industrial orifice plate union is a high-quality, Class 3000 threaded union engineered for general-purpose applications. Made from 316 stainless steel, this female threaded (FNPT) union features a Viton O-Ring seal for excellent resistance to chemicals and high temperatures. With a flat orifice plate and double O-Ring seal, this union ensures a turbulence-free fit and a reliable, leak-proof seal. Its precision-machined components and interchangeable end connections make it versatile for various piping systems. Proudly made in the USA.

Note: Place desired drilled orifice bore in parentheses. For blank plate, note “(blank)” 

Examples: (0.250″), (0.500″), (blank)

Features

• Turbulence Free: Designed with a flat face for a turbulence-free connection across the seats
• O-Ring Isolation: O-Ring seal is strategically placed in the thread piece face, providing protection against media contact, abrasives, and erosion
• Precision Machined: High-quality, precision-machined components ensure leak-proof reliability
• Interchangeable Ends: Offers interchangeable threaded, socket weld, and butt weld ends, reducing overall costs
• Material Versatility: Available in a range of materials, including 316 stainless steel, for various application needs
• Vibration Resistance: The union’s seals withstand pressure surges and vibrations without loosening
• Low Maintenance: Requires no further tightening after the initial seal is made

Specifications

• Size: 1 1/4 in.
• Connection Type: FNPT (Female Threaded)
• Material: 316 Stainless Steel
• Seal: Viton
• Class: 3000
• Series: 3131
• Orifice Plate: Flat Orifice with Double O-Ring Seal

Downloads

Product Literature (PDF Download)