The Safety Valve - Leser.ru

More documents

Recommendations

Info

34 Options Highest adaptation to all service conditions
1 2 3 The stainless steel bellows [1] have two functions: - Compensation of applied or built-up back pressure on the outlet side of the valve. The full lift of the safety valve is thus ensured. -Protection of the sliding parts and springs from temperature or cotamination. The lift stop [2], e. g., by gag, serves to adjust the safety valve precisely to the mass flow to be discharged. The Test Gag [3] allows the valve to be blocked for pressure tests on the system. The vibration damper [4] suppresses vibrations on safety valves even under extremely adverse system conditions. A stable blow-off is ensured. The safety valve/bursting disc combination [5] is used, where environmentally harmful, toxic or expensive media or media with a propensity to adhere are protected, and at the same time the highest demands are placed on freedom from leakage. The safety valve and bursting disc combination are type tested. The drain hole [6] serves to drain the valve body, particularly in the presence of condensate in the case of steam plants. Flanges, flange sealing faces, threaded or special connections can be supplied to European, American and other standards. In systems which have to be heated (e.g., protection of freezing media or viscous media) the safety valve can be fitted with a heating jacket [7]. The heating jacket is heated either by low pressure steam or by heat transfer oils. Safety valve seat and disc: - Metal sealing: seat and hardened disc have precision machined sealing faces. For severe service conditions stelliting of the sealing faces is available. - Soft sealing: discs with soft seals (o-rings) offer high degrees of leakproofness. A large number of elastomers are available for selection. The temperature limits of the elastomers must be observed (min. -45 °C/ max. 250 °C). 4 5 6 7 35
Page 1 and 2: EN The Safety Valve
Page 3 and 4: Contents LESER - the company ......
Page 5 and 6: History “Loyalty by change”. Wi
Page 7 and 8: LESER worldwide The company’s rep
Page 9 and 10: Tests and trials Capacity Determina
Page 11 and 12: 3 4 Safety valves protect all kinds
Page 13 and 14: Bonnet You have the choice between
Page 15 and 16: Applications: Chemical industry - P
Page 17 and 18: Applications: • Power stations an
Page 19 and 20: Applications: 6 3 4 2 1 5 • Large
Page 21 and 22: Applications: Type 431/433 • Chem
Page 23 and 24: Applications: • Carbon dioxide pl
Page 25 and 26: 486 25,40,50,65, 80 Reduced dead sp
Page 27 and 28: Applications: Type 546 • Multiple
Page 29 and 30: There are special rules and regulat
Page 31 and 32: Applications: • Continuously func
Page 33: Applications: • Large steam boile
Page 37: Body materials Opening Complete 0.6
Page 40: The Safety Valve LESER GmbH & Co. K

The Safety Valve - Leser.ru

Create successful ePaper yourself

Delete template?

Save as template?