Gate Valve, Air Operating with Pneumatic Actuator
Reference: STK:03.11.4063.01 7/15/2012, Location: Middle East
Category: Gate Valves
Scope of Work
Required for suction and discharge lines of crude pumps air operating gate valves with pneumatic actuators complete as the following:
Item 001 QTY=6, gate valve size 30" with pneumatic actuator complete
Item 002 QTY=20, gate valve size 20" with pneumatic actuator complete
Item 003 QTY=12, gate valve size 16" with pneumatic actuator complete
Valve specifications:
Valve type: wedge gate valve
Type of connection: flanged ends raised face
Class: 150
Number of holes for flange size 30”: 28
Number of holes for flange size 20”: 20
Number of holes for flange size 16”: 16
Face to face for valve size 30”: (24")
Face to face for valve size 20”: (18")
Face to face for valve size 16”: (16")
Material:
Body bonnet: ASTM a216 wcb
Stem, wedge & seat: ASTM a 182 f304
Flange material: ASTM a: 105
Flange sizes 16" & 20" according to ASME b 16.5 and
Size 30" according to ASME b 16.1
Actuator specifications
Pneumatic actuator
Air working pressure at site: 60 psi
Max setting torque at 60 psi
Required torque for valve size (30"): 590 nm
Required torque for valve size (20"): 153 nm
Required torque for valve size (16"): 153 nm
Opening time for valve size 30" = 164 sec
Opening time for valve size 20" = 120 sec
Opening time for valve size 16" = 96 sec
Max air consumption in cubic mater / min
For valve size 30" = 5.4
For valve size 20" = 3.4
For valve size 16" = 3.4
Notes: approximate wight (30 ton)
Required materials:
1 - insurance policy
2 - original certificate
3 - third party inspection
4 - spare parts for two years for pneumatic actuator showed in a separated list.
5 - operating, maintenance and spare parts must be provide in three copies in
English language.
|
