Jafar 2312 Instrukcja obsługi - Strona 3

Przeglądaj online lub pobierz pdf Instrukcja obsługi dla Jednostka sterująca Jafar 2312. Jafar 2312 8 stron. Flanged gate valves with soft seals

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1. INTENDED USE

Gate valves with soft seals are intended for isolation of NG (natural gas) flow. The valves have the Oil & Gas

National Technical Assessment no. Nr – INiG-PIB-KOT-2019/007. Each valve can be installed in above-ground

and underground pipelines as an integral inline part of the piping.The gate valves are two-position valves which

can only be set fully open or fully closed, and not intended for operation as control or damper valves.

2. TECHNICAL DESCRIPTION



Production and acceptance according to PN-EN 13774:2013-07



100% of each valve is leak tested.

Application temperature range: -10°C to +70°C from -20°C (-30°C) to +60 °C, i.e. the Temperature Class 2



(Class 3)



Nominal diameter range:



for P/N 2312 - DN25 to DN600 [mm].



for P/N 2314 – DN50 to DN600 [mm].



Hydraulic performance: maximum medium flow rate for liquids 4 [m/s] and 30 [m/s] for gases.



Valve switching driving torque:

Ilość obrotów

[mm]

13,5

100

125

150

200

34,5



Valve control mode: the standard version of the gate valve has the clockwise closing sense of rotation. The

closing sense of rotation can be opposite on special order



Installation length: in accordance with plant documentation.



Nominal pressure ratings: 1,0MPa, 1,6MPa



The flanged gate valves with soft seals intended for gas flow isolation in NG pieline systems and other fluid

systems, feature a smooth walled bore, a non-ring spindle, and an o-ring spindle seal installed in a head-type

valve cover. The spindle is guided by a bushing in the valve cover neck and a sealing plug. The spindle seal

is effected by the plug sealing assembly, which is a system of O-rings. The gate valve closure is a cast iron

wedge completely coated with rubber and featuring sliding inserts as motion bearings. The spindle can be

operated manually with a hand wheel or, in gate valves installed underground, through a hood and gate valve

casing, using a T-socket wrench. The valve body 2312 features bell socket ends with transverse grooves cut

along the outer surface on which PE pipe ends are slid over. The pipes at the grooved bell socket length are

press fit with pressed steel rings that provide sure and tight joint. The metal to PE joints are preserved with

the PROTEGOL anti-corrosive protective coat and heat-shrunk bands.

OPERATING MANUAL

[Nm]

max

108

11-2020

250

42,5

300

200

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