service valve

Material 316L / SS
Weight 20 gr

For this reason, if the sealing has to be maximum is essential that the flange surface be as maximum smooth as possible, without roughness and tools marks neither.

The RTJ is plastically deformed and seals the surface irregularities that contact, for this reason the gasket material has to be always softer than flange material. This difference has to be, at least 30 HB. In the case where the gasket materials of RTJ type and the flange had a similar hardness, will be necessary do a thermal treatment to the RTJ gasket to reduce the hardness.

RTJ gaskets production is based on the regulation ASME B16.20

Single Service Valve Corrosion are especially designed for use with Access Fittings and  Retrievers.

Pressure Rating 3600 PSI (24.8 Mpa)
Seal Options Available for Temperature Rating up to +450 °F (+232 °C)
Compatible All Retrievers
Material 316L / SS, A105 CS
Standard Meets NACE MR0175 and MR0103
Safe Pressurization with By-Pass Bleed Valve Provides
Type – Single Service Valve
– Double Service Valve

A spiral wound gaskets is categorized as semi-metallic gasket that is typically used for high pressure applications. The sealing element is formed by winding two materials (one for sealing, one for resilience) into thin v-shaped spirals.

One material used in the sealing element is usually a metal and the other, referred to as a filler, which is a soft nonmetallic material, typically Teflon, aramid fiber or graphite. Both are chosen for compatibility with the sealing media and their ability to withstand the operating conditions. Different configurations exist to handle different flange designs and operating conditions.

These gaskets have good recovery and good tolerance for flange-surface finish irregularities. The sealing action is the result of a combination of the flow of the metal and soft filler plies when the gasket is compressed. They are particularily suited for assemblies subject to extremes in joint relaxation, temperature or pressure cycling, shock, or vibration

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