Can the VSTI-BE plug, carbon steel withstand pressures with a 4:1 safety factor when used with BSP external thread and DIN 3852 type E elastomer gasket?

Yes. The VSTI-BE plug, carbon steel described (BSP external thread, sealing per DIN 3852 type E elastomer gasket with rectangular cross-section) is specified in the DIN 2353 description with a stated safety factor 4:1. When installed correctly with the matching BSP thread and a compliant DIN 3852 type E elastomer gasket, carbon steel (galvanized) material and the plugâs design provide the required mechanical strength to withstand the systemâs working pressure while maintaining the 4:1 safety margin. Ensure correct torque, thread engagement, compatible gasket material for the fluid and temperature, and that the mating port conforms to DIN 3852 type E dimensions; deviations, damage, or improper installation can reduce the effective safety factor.

Does the VSTI-BE plug, carbon steel require specific torque values for BSP external thread with DIN 3852 type E gasket to ensure 4:1 safety factor?

Yes - the VSTI-BE plug, carbon steel requires specific torque values to achieve a 4:1 safety factor for BSP external threads sealed with a DIN 3852 type E elastomer gasket. DIN 2353 specifies the plug design and the required sealing method but does not publish a single universal torque; correct tightening depends on thread size (BSP), gasket material and thickness, surface condition and lubrication. To ensure a 4:1 safety factor you must use the manufacturerâs or engineering table that gives torque versus thread size and material, or calculate torque from required preload using thread geometry and friction coefficients. If no specific values are supplied, perform controlled torque tests on representative assemblies (measuring axial load and leak performance) or consult the plug/manufacturer technical data to obtain validated torque settings that guarantee the 4:1 safety margin.

Is the VSTI-BE plug, carbon steel compatible with BSP external thread and DIN 3852 type E gasket for 4:1 safety?

Yes. The VSTI-BE plug, carbon steel is compatible with BSP external thread and uses DIN 3852 type E sealing (elastomer gasket with rectangular cross-section), so it meets the described requirements and provides a 4:1 safety factor.

VSTI-BE plug, carbon steel

Additional information

Material	CS – steel (cast iron)

DIN 2353 plug, type VSTI-BE for hex key: external BSP thread (sealing DIN 3852 type E – elastomer gasket with rectangular cross-section). Safety factor 4:1. Material: carbon steel, galvanized.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
HD-VSTI-02-BE	DIN 2353 plug 1/8" BSP	-	400
HD-VSTI-04-BE	DIN 2353 plug 1/4" BSP	-	400
HD-VSTI-06-BE	DIN 2353 plug 3/8" BSP	-	400
HD-VSTI-08-BE	DIN 2353 plug 1/2" BSP	-	400
HD-VSTI-12-BE	DIN 2353 plug 3/4" BSP	-	400
HD-VSTI-16-BE	DIN 2353 plug 1" BSP	-	400
HD-VSTI-20-BE	DIN 2353 plug 1.1/4" BSP	-	250
HD-VSTI-24-BE	DIN 2353 plug 1.1/2" BSP	-	250

DIN 2353 plug, type VSTI-BE for hex key: external BSP thread (sealing DIN 3852 type E – elastomer gasket with rectangular cross-section). Safety factor 4:1. Material: carbon steel, galvanized.