Sanitary Stainless Steel Union Blank Ends

RR STEEL manufactures sanitary stainless steel union blank ends for hygienic processing equipment, industrial piping and data center liquid cooling systems.

Our blank ends are available in DIN-14B, SMS-14B, IDF-14B, 3A-16A and RJT-14B configurations, with SS304 and SS316L material options.

These components provide removable closures for unused or reserved piping connections, including compatible coolant distribution piping within CDU assemblies.

What Is a Sanitary Union Blank End?

A sanitary union blank end, also known as a blind end cap, is a solid stainless steel component designed to close a sanitary union connection.

It is commonly installed with matching union components and sealing elements to provide a removable connection closure.

Unlike Tri-Clamp blank ends, sanitary union blank ends are manufactured according to specific connection geometries. DIN, SMS, IDF, 3A and RJT configurations must be selected individually.

Key Features

• Stainless Steel Materials: SS304 and SS316L options.

• Multiple Connection Standards: DIN, SMS, IDF, 3A and RJT.

• Precision CNC Machining: Accurate dimensions and connection profiles.

• Removable Connection Closure: Suitable for compatible sanitary and industrial piping assemblies.

• OEM Customization: Custom sizes, thicknesses and surface finishes.

• Liquid Cooling Applications: Available for compatible CDU coolant piping and reserved connection ports.

Available Standards and Configurations

DIN-14B Blind End Cap

Designed for DIN sanitary union connections. Available sizes shown in the supplied drawing range from DN10 to DN150.

SMS-14B Blank End Cap

Designed for SMS sanitary union connections, with sizes including 25, 38, 50, 63, 76, 101.6/104 and 102.5.

IDF-14B Blank End Cap

Designed for IDF sanitary union connections, with nominal sizes from 1″ to 4″ and different dimensional configurations.

3A-16A Blank End Cap

Designed for the specified 3A sanitary union connection profile, with nominal sizes from 1″ to 4″.

RJT-14B Blank End Cap

Designed for RJT sanitary union connections, with nominal sizes from 1″ to 4″/104.

Important: These connection standards have different dimensions and sealing profiles and are not automatically interchangeable.

Applications

Data Center CDU Liquid Cooling Systems

Stainless steel union blank ends can be used in compatible Coolant Distribution Unit (CDU) piping assemblies, including:

• Closing unused or reserved coolant piping connections.

• Sealing designated maintenance or inspection connection ports.

• Providing removable closures for selected manifold and distribution piping interfaces.

• Supporting custom stainless steel coolant piping assemblies.

Selection should be based on the actual connection design, coolant compatibility, gasket material, operating temperature and pressure requirements.

Food and Beverage Processing

Used in hygienic processing equipment, dairy production lines, beverage piping and sanitary tanks to close unused union connections.

Pharmaceutical and Hygienic Equipment

Suitable for compatible sanitary piping and processing equipment where removable stainless steel closures are required.

Industrial Fluid Handling

Used in stainless steel piping assemblies and industrial equipment with matching union connection systems.

OEM and Custom CNC Manufacturing

RR STEEL supports custom manufacturing of stainless steel union blank ends for sanitary, industrial and liquid cooling applications.

Available customization includes:

• DIN, SMS, IDF, 3A and RJT connection profiles.

• SS304, SS316L and other materials subject to specification.

• Custom dimensions and thicknesses.

• Surface finish requirements.

• Customer-specific connection and sealing geometries.

• Dimensional inspection and material verification.

Customers can provide drawings, samples or technical specifications for evaluation.

Why Choose RR STEEL?

RR STEEL manufactures stainless steel fittings and precision components for sanitary processing, industrial fluid systems and data center liquid cooling applications.

Our manufacturing capabilities include:

• 120+ CNC machines

• 20+ robotic units

• 20,000+ machined liquid cooling components per day across applicable production operations

• PMI material verification and dimensional inspection

• OEM manufacturing based on customer drawings

We supply components used in CDU piping and coolant distribution systems, rather than complete CDU equipment.

Contact RR STEEL with your connection standard, size, material and quantity for a quotation.