Dump valves PSK

Safety dump valves PSK

( produced by Exforma Ltd) are devices of membranous type and are intended for gas dumping in atmosphere in case of pressure increase beyond tolerance limit. Safety dump valves PSK are mounted on gas pipelines and gas regulating stations of  low, middle and high pressure. Pipeline connection - .coupler-joined (GOST 6357).

The following types of safety dump valves PSK are produced:

• DN 25:
  • dump valves of low pressure actuation –

    PSK-25P-N

    ;
  • dump valves of high pressure actuation –

    PSK-25P-V

    .
• DN 50:
  • dump valves of low pressure actuation –

    PSK-50PN/20

    ;
  • dump valves of middle pressure actuation –

    PSK-50PS/50

    ;
  • dump valves of middle pressure actuation –

    PSK-50PS/125

    ;
  • dump valves of high pressure actuation –

    PSK-50PV/1000

    .

Body material – aluminum AK 7. Climatic modification U3 GOST 15150 (from -45°C to +40°C).

Safety dump valves PSK are equipped with forced blow-through device.

Picture 1. Safety dump valves PSK

Designation	DN	Regulation range, kPa	Thrughput capacity*
PSK-50P-N/20	50	1,0-0,1 - 20,0+2,0	200
PSK-50P-S/50	50	20,0-2,0 - 50,0+5,0	500
PSK-50P-S/125	50	50,0-5,0 - 125,0+12,5	1100
PSK-50P-V/1000	50	125,0-12,5 - 1000,0+100	10000
PSK-25P-N	25	1,0-0,1 - 75,0+7,5	120
PSK-25P-V	25	60,0-6,0 - 750,0+75,0	1500

Picture 2. Safety dump valves PSK (drawing)

Parameter	PSK-50	PSK-25
DN	50 mm (2'')	25 mm (1'')
Dimensions:
- Diameter	230 mm	160 mm
- Height	240 mm	220 mm
Weight	6,9,kg	3,7 kg
Valve adjustment range	From 1 to 1000 kPa	From 1 to 750 kPa
Working medium	Nonaggressive natural gas GOST 5542	Nonaggressive natural gas GOST 5542
Environment temperature	от -40оС до +40оС	от -40оС до +40оС