Surge Anticipator Valve

CONTROL AUTOMATIC SURGE ANTICIPARTOR

شیر اطمینان

Surge Anticipator Valve

DN:50-1000 mm | PN: 10-40 bar

Nahrab piloted automatic control valves are used as control and regulating valves in the line. The operation of these valves is fully automatic and is controlled by the flow of fluid and does not require the application of energy from outside. In order to regulate the flow or pressure , a hydraulic circuit with a pressure difference across the valve and a regulating valve (pilot) is used

DN: 50 - 50
mm
PN: 10 - 10
Bar

Nahrab  piloted  automatic control valves are used as control and regulating  valves in lines. The operation of these valves is fully automatic and is controlled by the flow of fluid and does not require the application of energy from outside. In order to regulate the flow or pressure,  a hydraulic circuit  with a pressure difference across the valve and  a regulating valve (pilot) is used The command circuits of Nahrab  control valves are state to the art and made of the  best stainless steel and all of its  various pilots  are also produced by Nahrab Gostar Eshtehard Company. using stainless steel unions with a nipple and connector assembly  makes it possible to inspect or open and close the valve at  any moment and any section without need for any sealing strip.

 

Product features and advantages:

  • Easy installation due to the low weight of the valve
  • Flanges: in accordance with (2501 DIN) EN 1092-2
  • Face to face: according to ( DIN 3202) DIN EN 558-1 Series1) F1
  • Final test of valve: in accordance with DIN EN 12266-1

 

Corrosion Protection :

   Electrostatic  Epoxy powder Coating  with a  min  thickness  250   and certified by reputable international  institution for potable water.

Surge Anticipator Valve:

This valve is used to protect pumps, facilities and pipelines against the negative and positive pressure of harmful waves caused by sudden interruption or change of the  flow. When the pumps stop abruptly due to a power outage, the valve opens quickly and closes slowly, preventing negative and positive pressure. If for any reason the pressure in the system rises, this valve works and removes the exdessive pressure. The opening time of the valve can be adjusted by changing the volume of the accumulator, installed on it.

Spare Parts

Material

Part Name

Part No.

 

Ductile iron) GJS 400-15)*

Body

1

 

Ductile iron) GJS 400-15)*

Cover

2

 

1.4308

Seat

3

1.4301

Stem

4

EPDM or NBR

Sealing Ring

5

 

Ductile iron) GJS 400-15)

Disc

6

EPDM or NBR

Diaphragm

7

 

Ductile iron(GJS 400-15) or Al.Bz

Diaphragm Washer

8

1.4310 | 1.4301

Spring

9

 

1.4308

Disc Guide

10

A2

Stem Nut

11

1.4310 | Bronze

Cover Bearing

12

EPDM or NBR

Seat O-Ring

13

 

A2) 10inch and Larger)

Stud

14

 

A2

Hex Nut (10” and Larger)

15

A2

Pipe Plug

16

PTFE

Spacer Washer

17

 

A2

Cover Bolt (6” and Smaller)

18

They can also be produced with stainless steel or cast steel (WCB) as request

Technical drawings of this valve will be Uploaded soon