Series GV-200 Pneumatic Globe Control Valve
VQ-GV200
Top-guided single-seat globe valve with a multi-spring diaphragm actuator and a digital positioner, for modulating control on liquid, gas and steam.
- SIZES
- DN15 to DN200
- CV
- 1.6 to 360
- RATING
- PN16, PN40, Class 150 and 300
- LEAKAGE
- Class IV to IEC 60534-4
Why it is specified
A control valve is sized on the process data and not on the line size, which is why this one is quoted against three flow cases rather than against a diameter. Cv from 1.6 to 360, equal percentage or linear trim, and a positioner that reports valve travel back to the control system.
Typical applications
- Boiler feedwater control
- Chemical dosing
- Column reflux and feed control
- Steam pressure reduction
- Temperature control loops
Options and executions
- Bellows sealed bonnet for toxic service
- Extended bonnet for cryogenic or high temperature duty
- Low noise cage trim and expansion plate
- NACE MR0175 materials for sour service
- Partial stroke testing on the positioner
- Volume booster for fast stroking
The full table.
Figures cover the whole series. The variant table below narrows them to a part number.
PERFORMANCE
- Flow coefficient Kvs
- 1.4 to 310 m³/h, by size and trim
- Flow coefficient Cv
- 1.6 to 360, by size and trim
- Trim characteristic
- Equal percentage, linear or quick opening
- Rangeability
- 50 to 1, equal percentage trim
- Seat leakage
- Class IV to IEC 60534-4, Class VI with a soft seat
- Travel
- 20 to 60 mm, by size
- Stroking time
- 2 to 9 seconds for a full stroke
MATERIALS
- Body
- 1.4408 stainless steel, or WCB carbon steel
- Trim
- 1.4404 stainless, stellited on the seat face
- Plug
- Top-guided, parabolic or V-port
- Stem
- 1.4401 stainless steel, 12 or 20 mm
- Packing
- PTFE V-ring, spring loaded, or graphite for steam
- Bonnet
- Plain, extended or bellows sealed
- Actuator
- Multi-spring diaphragm, cast aluminium, epoxy coated
CONNECTIONS AND RATINGS
- Sizes
- DN15 to DN200
- Connections
- EN 1092-1 flanged, raised face
- Pressure rating
- PN16 and PN40, or Class 150 and Class 300
- Temperature range
- -29 to +400 °C, by packing and bonnet
- Actuator supply
- 1.4 to 6 bar instrument air, dry and oil free
- Signal
- 4 to 20 mA, HART 7, or FOUNDATION Fieldbus
- Fail action
- Fail closed or fail open, spring return
- Enclosure
- IP66 positioner and limit switch housing
Stocked frame sizes.
| PART NUMBER | SIZE | FLOW COEFFICIENT | BODY MATERIAL | RATING |
|---|---|---|---|---|
| VQ-GV200-025-S | DN25 | Kvs 10 | 1.4408 | PN40 |
| VQ-GV200-050-S | DN50 | Kvs 40 | 1.4408 | PN40 |
| VQ-GV200-080-S | DN80 | Kvs 100 | 1.4408 | PN16 |
| VQ-GV200-100-C | DN100 | Kvs 160 | WCB | Class 300 |
| VQ-GV200-200-C | DN200 | Kvs 310 | WCB | Class 150 |
GV-200, DS-GV200
The datasheet is issued with the selection rather than downloaded blind, so the figures that arrive are the ones for your duty point. Ask for it with the quotation and it comes back as a PDF.
What is in it
- Kv and Cv tables for every size and trim combination
- Noise prediction to IEC 60534-8-3 at three pressure drops
- Cavitation index and the limits for each trim
- Actuator sizing, bench range and air consumption
- Face-to-face dimensions to EN 558 series 1 and 2
- Positioner wiring and the HART variable map
Elsewhere in the catalogue.
CP-150
Single-stage, back pull-out end-suction pump to EN 733, for clean and lightly loaded liquids in process, cooling and transfer duty.
MD-80
Close-coupled sealless centrifugal pump with a synchronous magnetic coupling, for aggressive, toxic and expensive media where a dynamic seal is not acceptable.
BF-300
Wafer and lugged resilient-seated butterfly valve with a moulded liner, bi-directional and bubble tight to the full rating, for isolation on water, air and neutral media.
FH-400
Stainless steel single-bag filter housing with a swing-bolt closure and an internal restrainer basket, for coarse and medium filtration on process and utility lines.
Quote the GV-200 for your duty.
Send the process data and the line size. The quotation comes back with the selection, the calculation and the lead time on the stocked variants.
Vanteq Industrial is a fictional company created for demonstration purposes. This product does not exist. The specifications, performance figures, materials and datasheet references on this page are illustrative and must not be used to select, size or buy equipment.