| Customization: | Available |
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| Custom Made: | Accept Customization |
| Applicable Medium: | Applicable Medium: Water, Oil, Steam, and etc. |
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Product Introduction
01 The body of this valve series adopts a cast and forged structure, featuring an equal double sealing pair with semi-forced bi-directional sealing. The step-by-step operation of the sealing surface movement and the wedge block's wedge-opening and tightening movement ensures zero leakage.
02 The sealing surface has low friction during movement, allowing for easy opening and closing. Additionally, the sealing surface has a self-compensating function for wear.
03 The structure is simple and compact, with easy maintenance and a long service life.
04 The valve bonnet's packing chamber is equipped with a vacuum sealing structure, which provides a self-expanding pressure-tightening function. All connecting surfaces are sealed with high-strength expandable materials, completely isolating the system from the atmosphere and providing excellent system airtightness.
05 This valve series offers two connection types: flange and welding, and two driving methods: manual and electric. The valve is suitable for pipelines with working temperatures of ≤425°C and ≤550°C, and the working media can be water, steam, or air. It is primarily used as an on-off device, especially suitable for vacuum isolation and sealing in steam turbine condensers and vacuum negative pressure systems in thermal power plants.
Product Parameters
| Product Name | Vacuum Parallel Double Disc Gate Valve | Model | NKZ44H |
| Material | Options: (Stainless Steel / Carbon Steel / Cast Steel) | Nominal Pressure | 1.6~10.0MPA |

| Nominal Pressure PN/MPa | /MPaTest Pressure/MPa | ||
| Shell Strength Test | Upper Sealing Test | Sealing Test | |
| 2.5 | 3.8 | 2.8 | 2.8 |
| 4.0 | 6.0 | 4.4 | 4.4 |
| 6.4 | 9.6 | 7.0 | 7.0 |
| 10.0 | 15.0 | 11.0 | 11.0 |
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