Description

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forged steel valve,forged steel valves,high pressure gate valve,high pressure gate valves,actuated gate valve,actuated gate valves,actuated valves,actuator valve,gate valve actuator,gate valve with actuator
Bolted Bonnet(BB),Welded bonnet(WB),Pressure seal bonnet(PSB),Rising stem or Non-rising Stem,Outside Screw and Yoke( OS&Y;Metallic or soft seating surfaces,Wedged gate,Parallel gate;Integral,Threaded or welded seat ring.OS&Y,Rising Stem,Flexible Solid Wedge.Welded-in or Threaded Seat Ring,water seal gate valve.ANSI series Gate Valves.Βάνες σύρτη.Šoupátka,Absperrschieber,comhla geata.Yoke gate 
Gate valves with NPS >2 are of flexible wedge gate; pav valve.pipe armaturen.
Gate valves with NPS
Stem Design
The stem is of integral forged design .The minimum diameter of the stem shall per the standard requirement .The connection of the stem and disc is T type .The strength of the connecting area is bigger than that of the T threaded part of the stem .
Stem Nut
Usually, the stem nut is made of ASTM A**9 D2.It is also can be made of copper alloy if being requested by the customer .For large sized gate valves (NPS *0 for Class **0, NPS 8 for Class **0, NPS 6 for Class **0,NPS 5 for Class **0),rolling bearing is fitted at the two sides of the stem nut in order to minimize the open and close torque of the gate valve.
Special Gate Valve
Besides the common gate valves ,We can also makes cryogenic gate valve, Jacketed Gate Valve, Bellow Sealed Gate Valve, Extension Stem Gate Valve for underground application, Flat Gate Valve, etc.Water seal gate valve.By-Pass and Drain Connections,Indicator and Locking Devices.
Operation type
Handwheel,Gear, Electric actuator,Pneumatic actuator,Bare stem
Standard
Design and Manufacture: API 6D,API**0,API**3,ISO****4,BS***4 or ASME B*6.*4
Inspection and Test: API **8/API 6D
End flange dimension: ASME B*6.5,ASME B*6.*7(API **5 ,MSS SP*4)
Butt ends dimension: ASME B*6.*5(BW)
Face to face,end to end: ASME B*6.*0
Pressure-temperature ratings: ASME B*6.*4
NACE: NACE ***5
Material
ASTM A**6 WCB WCC;ASTM A**7 WC1 WC6 WC9;ASTM A**1 CF8,A**1 CF8M,
A**1 CF3,A**1 CF3M,A**1 CN7M;.ASTM A**2 LC1 LCB LCC LC3 or by customers 
(Cast Steel, Alloy Steel, Stainless Steel, Special Steel)*3CrMo *4 V
austenite; duplex stainless steel; ferrite; stainless steel;steel castings