NBS Valve
NBS UNIPOWER Single-Acting Double Flange Type
Manufacturer: NBS Valve
Product type: Double Flange Type
Feature
- Fine control of small amounts, which a butterfly valve cannot do
- Large capacity control, which a globe valve cannot do
- Complete sealing is possible with a double seat
- Smaller, lighter, and cheaper than a globe valve
- Easy to maintain and highly economical
Comparison
Fine Control
Large Capacity
Complete Sealing with Double Seat
Option
Noise Reduction Measures
- Based on Union’s characteristics and ISA calculation formula, noise prediction is performed, and suitable countermeasures are proposed to the customers.
Installation of a Union multi-plate.
By installing the Union multi-plate, noise can be reduced by about 10 dBA.
*For details, please consult with us and check the specifications.
Cavitation Countermeasures
- Based on Union’s characteristics and ISA calculation formula, cavitation prediction is performed, and suitable countermeasures are proposed to the customers.
Valve flow direction optimized processing.
Installation of a Union multi-plate.
*For details, please consult with us and check the specifications.
Environmental Protection Gland
A double-seal structure completely seals any leakage from the valve gland.
- TA-LUFT Standard:
TA-LUFT is a structure designed to prevent leaks from the valve gland for the purpose of environmental protection.
Structure Feature
Positioner
The positioner is used to adjust the valve opening degree as desired by receiving either an electric current signal (electro-pneumatic positioner) or an air pressure signal (pneumatic positioner) from the control room.
Union + Unipower + Positioner
This combination provides excellent controllability.
Electro-Pneumatic
Pneumatic
Features
- Rotary type: Equipped with a linked lever type that allows for easy zero adjustment and range adjustment.
- Vibration resistance: No resonance in the range of 5-200 Hz (2G).
- Linearity: ±1% (single operation), ±2% (compound operation).
- Hysteresis: 1% (single operation), 1% (compound operation).
- Can be adapted to all installation positions.
Specifications
| Type | NC/NE Type | NS Type |
|---|---|---|
| Operation Mode | Double Acting (NC/NE-D) / Single Acting (NE-OS) | Double Acting (NS-ON) / Single Acting (NS-NS) |
| Structure | Scotch Yoke Type Pneumatic Actuator | Scotch Yoke Type Pneumatic Actuator |
| Connection Standard | ISO5211/1 | ISO5211/1 |
| Namur VDI/VDE3845 (optional consultation needed) | Namur VDI/VDE3845 (optional consultation needed) | |
| Application | ON-OFF | ON-OFF |
| Body/Cover Material | FCD400 | FCD400/FCD450 |
| Cylinder Material | FCD400 | STKM13 |
| Shaft Material | S45C/Chrome Plated/Hardened Steel | S45C/Chrome Plated/Hardened Steel |
| Piston Material | AC4C-T6 Aluminum Alloy | A6061-T6 Aluminum Alloy |
| O-Ring Material | NBR | NBR |
| Standard Operating Pressure | 0.4 MPa (Air Pressure) | 0.4 MPa (Air Pressure) |
| Pipe Connection Size | Rc1/4 {NC091 | Rc1/4 {NS-13N(S), NS-17N(S), NS-28N(S)} |
| Operating Angle | ON-OFF; 0° ~ 93° | ON-OFF; 0° ~ 93° |
| Operating Temperature | -20°C ~ +80°C | -20°C ~ +80°C |
| Protection Structure | Weatherproof (IP55) | Weatherproof (IP55) |
| Standard Coating | Munsell color system (Heavy anti-corrosion) | Munsell color system (Heavy anti-corrosion) |
| Manual Operation | G-Type Manual Gear | Side Handle |
| Limit Switch | 1-point type: 1LS (Weatherproof), 1LX (Explosion-proof), VCL (Weatherproof) | 1-point type: 1LS (Weatherproof), 1LX (Explosion-proof) |
| Solenoid Valve | 3-way (Explosion-proof), 4-way (Explosion-proof); M15G~M65G (Weatherproof, Explosion-proof) | 3-way (Explosion-proof), 4-way (Explosion-proof); M15G~M65G |
| Air Filter Regulator | AW30~40, XR108 (Mini) | AW30~40, XR108 (Mini) |
| Speed Controller | AS4000 | AS4000 |
| Quick Exhaust Valve | QEV2-8, 10, 15, 20 | QEV2-8, 10, 15, 20 |
| Air Tank | AN20, 30, 40, 50B | AN20, 30, 40, 50B |
| Positioner | DH-12B | DH-12B |
| Other | Specified coating, volume tank, lock-up valve (optional) | Specified coating, volume tank, lock-up valve (optional) |
