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Type 2357-11 Pressure Regulator · Type 2357-21 Excess Pressure Valve

Type 2357-11 Pressure Regulator · Type 2357-21 Excess Pressure Valve
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Type 2357-11 Pressure Regulator · Type 2357-21 Excess Pressure Valve - 1

T 2560 EN Type 2357-11 Pressure Regulator · Type 2357-21 Excess Pressure Valve Self-operated Pressure Regulators Application Pressure regulators for cryogenic gases and liquids as well as other liquids, gases and vapors · Operating pressures up to 63 bar · Set point ranges from 1 to 40 bar · Temperatures from –200 to +200 °C · Oxygen clean according to international standards and guidelines Pressure build-up regulator · Valve opens when the upstream pressure drops Pressure reducing valve · Valve closes when the downstream pressure rises Excess pressure valve · Valve opens when the upstream pressure rises Industrial gases (such as argon, nitrogen and oxygen) are stored in a liquefied condition at extremely low temperatures and at a constant pressure in thermally insulated tanks. Pipes transport the medium to the consumer. The extreme operating conditions (pressures up to 50 bar and temperatures down to –200 °C) make it necessary to use special valves. The Series 2357 Pressure Regulators are especially designed for the conditions in cryogenic service. These regulators can also be used for gases, liquids and vapors under other operating conditions. Special features •• Low-maintenance proportional regulators requiring no auxiliary energy •• Wide set point range and convenient set point adjustment •• Rugged design and low overall height •• Cleaned and packed for oxygen service 1) Versions The pressure regulators consist of a valve body, operating diaphragm and set point adjuster. Type 2357-11 Pressure Build-up Regulator with safety function The upstream pressure is transmitted to the operating diaphragm. The valve opens when the upstream pressure falls below the adjusted set point. Direction of flow from port B to A. Safety function: the plug in the pressure build-up regulator operates like a safety valve and relieves the pressure chamber. The pressure acts from below against the plug surface. The valve opens to equalize the pressures. Type 2371-11 Pressure Reducing Valve The valve regulates the downstream pressure to the adjusted set point. The valve closes when the downstream pressure rises. Direction of flow from port A to port B. The regulators are not approved for oxygen service according to EIGA 13/02/E due to the use of thin-walled components made of CrNi steel 1) Fig. 1: Type 2357-11 Pressure Regulator/Type 2357-21 Excess Pressure Valve Type 2357-21 Excess Pressure Valve The valve regulates the upstream pressure to the set point adjusted at the set point adjuster. The valve opens when the pressure increases until the set point is reached. Direction of flow from port B to port A. The valve opens when the pressure increases until the set point is reached. The regulator is additionally equipped with an integrated non-return unit that prevents the medium from flowing back. Special versions (details on request) Type 2357-11 and Type 2357-21 Pressure Regulators –– Version for liquid hydrogen and flammable gases SAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507

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Type 2357-11 Pressure Regulator · Type 2357-21 Excess Pressure Valve - 2

 Pressure build-up regulator  Pressure reducing valve Coupling nut and ball-type bushing with welding nipple for 21.3x1.6 mm pipe diameter · Coupling nut and ball-type bushing with flanges · Other accessories in Data Sheet u T 2570. Ports A and B are marked on the valve body. Functioning as a Type 2357-11 Pressure Build-up Regulator (Fig. 2) with direction of flow from port B to port A, the pressure upstream of the valve (port B) is transmitted to the operating diaphragm. The valve closes when the upstream pressure increases and opens when the upstream pressure drops. The pressure...

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Type 2357-11 Pressure Regulator · Type 2357-21 Excess Pressure Valve - 3

Pressure regulator functioning as a pressure build-up regulator with safety function 10 When tapping the liquefied cryogenic gas, the gas pressure in the insulated tank causes the medium to be transferred to the vaporizer (8). The gas pressure in the tank drops below the adjusted operating pressure. The Type 2357-11 Regulator (installed as a pressure buildup regulator; 2) opens and allows the liquefied gas to flow into the pressure build-up vaporizer (7). The gas pressure increases and reaches the operating pressure again. The pressure build-up regulator (2) closes. After closing the...

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Type 2357-11 Pressure Regulator · Type 2357-21 Excess Pressure Valve - 4

Flow capacity of the regulator dependent on the liquid column in the cryogenic tank The value table and the mass flow diagram show the flow capacity for the media nitrogen (N2), oxygen (O2), argon (Ar), carbon dioxide (CO2) and natural gas (LNG). The specifications apply to the Type 2357-11 Pressure Build-up Regulator installed in the liquid phase of the pressure build-up control loop; as shown in Fig. 4 (sample application). The maximum flow capacity [kg/h] of the regulator arises from the liquid level of the medium in the tank and can be determined from the graph. The data in the graph...

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Type 2357-11 Pressure Regulator · Type 2357-21 Excess Pressure Valve - 5

Type 2357-11 Pressure Regulator/Type 2357-21 Excess Pressure Valve with welding ends (accessories) · Weight approx. 4 kg Fig. 6: Dimensions and weights Ordering text Type 2357-11 and Type 2357-21 Pressure Regulators Set point range … bar Optionally, accessories ... Special version ...

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