Features

Simple-to-Change Capacity or Characteristic ; A simple cage change is all that is required to change between reduced and full-sized capacity trims or between linear and equal percentage characteristics.

Tight Shutoff ; A variety of shutoff classes from ANSI IV through VI are available to meet application requirements.

Sour Gas/ Corrosive Fluid Capable ; The wide choice body and trim materials allows the 840G to be applied to corrosive/ sour gas services with full compliance to NACE requirements.

Easy Maintenance ; Top-entry design and a cage-retained seat ring allow for quick inspection or trim change.

Quality Assurance/ Quality Control ; All series 840G valves meet the ANSI B16.34 standard of "Valves-Flanged, Threaded, and Butt-welding End". This encompasses the dimensions, construction, testing and rating of all valves supplied. We also perform ANSI standard seat leakage and hydrostatic tests on every valve we build, and operability tests are run on each valve and actuator leaving our factory. Special tests are readily available to meet your specific project needs, including non-destructive testing of valve components and performance testing of actuator controls.

Specifications

The series 840G Cage-guided valve is specially designed using the most recent refinements in control valve technology. It is used to control a wide variety of relatively clean liquids and gases at high-pressure differentials.

The design of the 840G valve is very flexible in that it allows a variety of trim types to be installed in the body. In addition, its cage-guided construction reduces plug vibration and provides stable performance throughout travel. All trims of the 840G valve have a quick change design so it guarantees convenient repair and easy replacement of trim. The 840G valve is available in size NPS 1/2(DN 15) ~ NPS 20(DN 500) ANSI Class 150 ~ 2500, with either flanged or welding end connections.

- Valve size : NPS 1/2(DN 15) to NPS 20(DN 500)
- Pressure Rating : ANSI Class 150, 300, 600, 900, 1500 and 2500
- End Connections :
ASME B16.5, Flanged end, RF/RTJ
ASME B16.11, Socket Welding end
ASME B16.25, Butt-welding end

- Materials :
ASTM A216 WCB, WCC
ASTM A271 WC6, WC9
ASTM A351 CF8(M), CF3(M), CF7M
ASTM A352 Duplex
ASTM A352 LCB, LCC
Hastelloy -B/ C

- Flow Characteristic : Equal Percentage, Linear or Quick Open
- Seat Leakage : Standard -ANSI Class IV, Option -ANSI CLass V or VI