STAUFF Safety Locking Plate (Type SIV – Twin Series)

Description

Operating Principle and Application

The STAUFF Safety Locking Plate (Type SIV – Twin Series) is a specialised mechanical component for secure fastening in industrial pipework systems[cite: 1]. Designed specifically for use in combination with the Type AF stacking bolt, the SIV Series plate performs two essential technical functions[cite: 1]. Its primary purpose is to prevent the stacking bolt itself from loosening, thereby ensuring the structural integrity of the assembly even in the presence of vibrations[cite: 1]. At the same time, the design of the Type SIV plate securely locks and prevents rotation of the upper clamp, maintaining perfect alignment of the clamping system[cite: 1].

Compliance with DIN 3015

The component is developed for the Twin Series and strictly complies with the parameters established by DIN 3015, Part 3[cite: 1]. This precise engineering configuration ensures full product compatibility with standardised clamp groups, making it perfectly suitable for STAUFF Group 1D, corresponding to DIN Group 1, and STAUFF Groups 2D to 3D, corresponding to DIN Groups 2 to 3[cite: 1].

Construction Features and Materials

To meet different operating and environmental requirements, the safety locking plate is manufactured in two main material versions[cite: 1]:

• Code W3: Manufactured from carbon steel with a zinc/nickel-plated protective surface treatment[cite: 1].
• Code W5: Manufactured from V4A stainless steel, with technical specifications corresponding to grades 1.4401 and 1.4571, equivalent to AISI 316 and AISI 316 Ti[cite: 1].

Alternative materials and different surface finishes are available from the manufacturer exclusively upon request[cite: 1].

Dimensions and Technical Specifications

The dimensions vary according to the relevant group and are documented in both millimetres and inches[cite: 1]:

• STAUFF Group 1D: The total length (L) is 27 mm (1.06 in)[cite: 1]. Dimension B1 is 28 mm (1.10 in), while dimension B2 is 11.1 mm (0.44 in)[cite: 1]. The thickness (S) is set at 1 mm (0.04 in), with a height (H) of 7 mm (0.27 in)[cite: 1].
• STAUFF Groups 2D-3D: The thickness (S) remains constant at 1 mm, the height (H) at 7 mm and dimension B1 at 28 mm[cite: 1]. These groups differ in their greater length (L) of 45 mm (1.77 in) and dimension B2 of 12.1 mm (0.48 in)[cite: 1].

Code Structure

The order codes for the STAUFF Safety Locking Plate (Type SIV – Twin Series) clearly reflect the selected technical specifications[cite: 1]. The code begins with the prefix “SIV”, followed by the STAUFF Group identifier (“1D” or “2-3D”) and ends with the material designation (“W3” or “W5”)[cite: 1]. Examples of this structure include the codes SIV-1D-W3 and SIV-2-3D-W5[cite: 1].

Summary Technical Table of the Main Features of the STAUFF Safety Locking Plate (Type SIV – Twin Series)

Product Codes