SI/DP

 Internal Safety Valve 

Features

For Cyrogen Tanks
Suitable for Use on Cryogen Tanks
Tightness
Good Tightness of the Valve
Internal Safety Valves
In Case of Emergency, Operational Interruption, or Repair of the Operating Valve, it will be closed
Cryogenic Gases and Chemicals
Suitable for the Storage of Cryogenic Gases and Chemicals
Maintenance Work
Possible without Dismantling the Pipeline
Shut-Off Valves
Addtional Shut-Of-Valves for Double-Walled Containers
Function and Description

Additional Safety for Double-Walled Storage Tanks

PROTEGO® SI/DP Internal Safety Valves (In-Tank Valves) are used as additional Shut-off Valves for double-walled containers, e.g., for storing liquefied gases, cryogenic gases, or other low temperature products or chemicals.

Prevention of Leakage in Case of Damage

The external connection piece of the housing Corps A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content. is usually fitted with a gate valve that is provided by the customer and aids the normal operating procedure. During normal operation, the valves are kept in the open position. It is only closed in case of emergency or for necessary repairs to the gate valve. The key feature of these valves is the shut-off element inside the container.

Leak Tightness through Lapped Valve Seat

The Internal Safety Valve consists of three housing parts (1) with lateral connecting nozzle (2) for installation of pipeline; a valve cone (3) with sealing (4); and a pneumatic actuator (5). The lapped valve seat Siège de soupape The valve seat is a component on which the valve pallet rests when the valve is closed. (10) and the seal Joint A seal prevents or limits unwanted transfer of product from one container to another. Seal is used as superordinate term for all types of sealing elements. guarantee the desired tightness. Bushings (8) guide the split valve spindle (6), which is equipped with double universal joint (7). Two compensators (9) are provided to accommodate the change in length due to temperature variations.

Automatic and Manual Actuation System for In-Tank Safety Valves

The Internal Safety Valve is operated/opened by a pneumatic actuator. The required closing force is provided by sufficiently dimensioned compression springs installed in the actuator. The controls must be designed in a way so that in the event of a malfunction Dysfonctionnement Devices, protective system, and components do not fulfill their intended function. , i.e., if the control substance (compressed air for the actuator and/or electrical power for the 3-way solenoid valve) fail, the internal safety valve Obturateur intérieur de sécurité An internal safety valve is a shut-off valve for tanks. automatically seals tightly. By attaching an additional element, the Internal Safety Valve can also be opened or closed manually. This attachment must be removed for the valve to operate automatically. The PROTEGO® SI/DP is available in various nominal sizes. Optionally, the Internal Safety Valve can be equipped with an internal nozzle to connect to a suction and filling pipe or a swing pipe system.
Product Data

Dimensions

DN a b
150 / 6"300 / 11.81350 / 13.78
200 / 8"400 / 15.75400 / 15.75
250 / 10"500 / 19.68450 / 17.72
300 / 12"600 / 23.62500 / 19.68

Dimensions in mm / inches

Material

DesignA
HousingStainless Steel
Valve discStainless Steel
Valve spindleStainless Steel
Spindle sealingPTFE
BushingPTFE
O-ringsPTFE

Flange connection type

EN 1092-1; Form B1
ASME B16.5 CL 150 R.F.

Other types upon request

Applications

Si vous avez des questions, des commentaires ou des suggestions, notre équipe d'experts se fera un plaisir de vous aider.

Picture of Mrs. Auris-Nadine Hillen
Mrs. Auris-Nadine Hillen

CSR Department

+49 (0)5307 809 108