| “ GVF 21 “ 2-way Control Valve is intended to control two positions or the proportion of cold/hot water, steam and air.
The body is made of cast-iron and the valve stem, seat, and valve plug are of stainless steel.
The stuffing box prevents leakage by using O-ring and Viton.
The feature curve of the valve is equal percentage or linear type. |
| Hot water : max. 120℃
Chilled water : -25℃ max. in closed circuit only Water with following additives :
- Hydrazine, Phosphate, for frost protection
- Glycol, max. 50%, for frost protection
- Saturated steam, superheated steam.
Upon customers request, Body materials of SCPH2, SCS13 are available.
※ Close-off pressure
| Model | DN | FLOW | Stroke | Sv | ΔPv | Actuator ΔPmax(Kgf/cm²) | | mm | Inch | Kvs | Cv | mm | GEA-20A(P) | GEA-35A(P) | GEA-55A(P) | | GVF21·15 | 15 | 1/2" | 3 | 3.5 | 20 | 50 | 10 | 10 | - | - | | GVF21·20 | 20 | 3/4" | 5 | 5.8 | 20 | 50 | 10 | 10 | - | - | | GVF21·25 | 25 | 1" | 10 | 11.7 | 20 | 50 | 10 | 10 | - | - | | GVF21·32 | 32 | 1 1/4" | 16 | 18.7 | 20 | 50 | 10 | 10 | - | - | | GVF21·40 | 40 | 1 1/2" | 25 | 29 | 20 | 50 | 10 | 10 | - | - | | GVF21·50 | 50 | 2" | 39 | 45 | 20 | 50 | 10 | 8 | - | - | | GVF21·65 | 65 | 2 1/2" | 65 | 75.8 | 20 | 50 | 10 | 5 | - | - | | GVF21·80 | 80 | 3" | 91 | 106 | 20 | 50 | 8 | 3 | - | - | | GVF21·100 | 100 | 4" | 130 | 152 | 40 | 50 | 4 | - | 3.5 | - | | GVF21·125 | 120 | 5" | 188 | 219 | 40 | 50 | 4 | - | 2 | 4.0 | | GVF21·150 | 150 | 6" | 283 | 330 | 40 | 50 | 4 | - | 1.5 | 3.5 | Sv : Rangeability (VDI 2173) * Kv=Cv/1.167
ΔPvmax in kgf/cm² = difference pressure across fully open valve on installation with full load
ΔPsmax in kgf/cm² = max,permissible difference pressure across closed valve
※Please indicate Valve model at ordering in case of assembling with GEA-35A(P) of 20mm Stroke. | Sv : Rangeability (VDI 2173) * Kv=Cv/1.167
ΔPvmax in kgf/cm² = difference pressure across fully open valve on installation with full load
ΔPsmax in kgf/cm² = max,permissible difference pressure across closed valve
※Please indicate Valve model at ordering in case of assembling with GEA-35A(P) of 20mm Stroke. | | | | | 2-WAY CONTROL VALVE(GVF22 series (GVF22.15 - 150)) | | | | GVF 22 series of valve controls two positions or the proportion of cold/hot water, steam and air district heating.
The body is made of cast-iron and the valve’s stem, seat, plug are of stainless steel.
The stuffing box prevents leakage by using O-ring and Vition.
The feature curve of the valve is linear type.
| | Operating pressure : 20Kgf/cm²
Operating temp : at - 25 ~ 200℃, DIN 4747 / DIN3158
Valve curve : Linear
Leakage rate : ≤0.01% of Kvs value Class Ⅳ
Connection : JIS 20K RF type | | | · Hot water : max 180℃
· Chilled water : -25℃ max. in closed circuit only Water with following additives ;
- Hydrazing, Phosphate, for frost protection
- Glycol, max. 50%, for frost protection
- Saturatecd steam, superheated steam 10bar. abs/max. 180℃
★ Upon customers request, Body materials of SCPH2, SCS13 are available ※ Close-off pressure | Model | DN | FLOW | Stroke | Sv | ΔPv | Actuator ΔPmax(Kgf/cm²) | | mm | Inch | Kvs | Cv | mm | GEA-20A(P) | GEA-35A(P) | GEA-55A(P) | | GVF22·15 | 15 | 1/2" | 3 | 3.5 | 20 | 50 | 20 | 20 | - | - | | GVF22·20 | 20 | 3/4" | 5 | 5.8 | 20 | 50 | 20 | 20 | - | - | | GVF22·25 | 25 | 1" | 10 | 11.7 | 20 | 50 | 20 | 20 | - | - | | GVF22·32 | 32 | 1 1/4" | 16 | 18.7 | 20 | 50 | 20 | 20 | - | - | | GVF22·40 | 40 | 1 1/2" | 25 | 29 | 20 | 50 | 16 | 9 | - | - | | GVF22·50 | 50 | 2" | 39 | 45 | 20 | 50 | 6 | 6 | - | - | | GVF22·65 | 65 | 2 1/2" | 65 | 75.8 | 40 | 50 | 5 | - | 6 | - | | GVF22·80 | 80 | 3" | 91 | 106 | 40 | 50 | 4 | - | 5.5 | - | | GVF22·100 | 100 | 4" | 130 | 152 | 40 | 50 | 2.5 | - | 3.5 | 4.5- | | GVF22·125 | 120 | 5" | 188 | 219 | 40 | 50 | 1.75 | - | - | 3.5 | | GVF22·150 | 150 | 6" | 283 | 330 | 40 | 50 | 1 | - | - | 3.0 | | |  | | |
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