Silent Globe Check Valve
Datasheet
Download datasheet (PDF)Specifications are indicative. Final specification is confirmed at quotation.
Specifications
Confirmed at quote- Size Range
- DN50 to DN350
- Pressure Class
- PN10, PN16, PN25
- End connection
- Flanged
- Operating temperature
- -10°C to 80°C
Standards
- Design & manufacture
- EN 558-1, ISO 5752, EN 1092-2, ISO 7005-2
Configure your variant(manually adjust box on the right if you require a different spec)
- Size
- Pressure
- End connection
Materials
All available material options per part. Click a pill to set it in the configurator.
- Body
- Disc
- Stem
- Bushing
- Spring
- Diffuser
- Nut
- Set Screw
- Washer
Pressure-temperature rating
Maximum working pressure at each temperature, per pressure class.
| Class | Pressure | Min temp | Max temp |
|---|---|---|---|
| PN25 | 25 bar | -10°C | 80°C |
| PN16 | 16 bar | -10°C | 80°C |
| PN10 | 10 bar | -10°C | 80°C |
Dimensions per size(10 sizes)
| Size | L (F/F) (mm) | PN16 D (mm) | PN16 K (mm) | PN10/16 n-d (mm) | PN10/16 C (mm) | PN25 n-d (mm) | PN25 D (mm) | PN25 K (mm) | PN25 C (mm) | PN16 n-d (mm) | PN10 D (mm) | PN10 K (mm) | PN10 n-d (mm) | Weight |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DN50 | 150 | 165 | 125 | 4-Ø19 | 19 | - | - | - | - | - | - | - | - | — |
| DN65 | 170 | 185 | 145 | 4-Ø19 | 19 | 8-Ø19 | - | - | - | - | - | - | - | — |
| DN80 | 180 | 200 | 160 | 8-Ø19 | 19 | 8-Ø19 | - | - | - | - | - | - | - | — |
| DN100 | 190 | 220 | 180 | 8-Ø19 | 19 | 8-Ø23 | 235 | 190 | - | - | - | - | - | — |
| DN125 | 200 | 250 | 210 | 8-Ø23 | 19 | 8-Ø28 | 270 | 220 | 23.5 | - | - | - | - | — |
| DN150 | 210 | 285 | 240 | 8-Ø23 | 19 | 8-Ø28 | 300 | 250 | 26 | - | - | - | - | — |
| DN200 | 230 | 340 | 295 | 8-Ø23 | 20 | 12-Ø31 | 360 | 310 | 30 | 12-Ø23 | - | - | - | — |
| DN250 | 250 | 405 | 355 | - | 22 | 12-Ø34 | 425 | 370 | 34.5 | 12-Ø28 | 395 | 350 | 12-Ø23 | — |
| DN300 | 270 | 460 | 410 | - | 24.5 | 16-Ø34 | 485 | 430 | 39.5 | 12-Ø28 | 445 | 400 | 12-Ø23 | — |
| DN350 | 290 | 520 | 470 | - | 24.5 | 16-Ø37 | 555 | 490 | 44 | 16-Ø28 | 505 | 460 | 16-Ø23 | — |
Operating media
Typical applications
- Pump discharge: no slam
- Water supply
- Booster stations
- High-pressure systems
- Fire fighting
- Irrigation
- Cooling and HVAC systems
Approvals
Features
- Spring-loaded poppet closes before flow reversal, preventing water hammer
- Silent, non-slam closure
- Metal-to-metal seating for watertight shutoff
- Operable in horizontal or vertical orientation
- Field-replaceable internals
- Optional resilient seat available
- Stainless steel trim available for special applications
- Complies with federal mandate limiting lead content in drinking water
- Factory Mutual approved in various sizes
- Advanced dynamic design of a single body with diffuser provides streamlined flow and assures lower head loss
- One of the lowest head-loss check valves available, giving a significant saving in pumping power cost; shorter disc stroke and faster spring reversal than most check valves
- Powder epoxy coated inside and outside for corrosion resistance
- Bronze bushing reduces wear during operation
- Stainless steel spring is hidden inside the diffuser, protected while the valve is in operation
- Disc closes positively before reverse flow, with closing speed up to 0.2 seconds
- Complies with EN 558-1, ISO 5752 and EN 1092-2/ISO 7005-2 flange dimensions
Description
The NSCV for DN50 - DN350 uses a spring-loaded disc that begins to close before flow reversal occurs. The spring force maintains the disc in near-closed position during the pump deceleration phase, so the disc is already seated or nearly so, when the reverse pressure differential arrives. This eliminates slam and the associated pressure transient. Available with stainless body for corrosive or high-purity service.
Selection notes
This check valve is supplied for flanged installation.
Sizes run DN50 to DN350, in PN10, PN16, PN25.
The body is Ductile Iron GJS 500-7.
Stated service media include clean water.
It is catalogued for Water & Wastewater, HVAC and Industrial Process.
Working temperature is -10°C to 80°C.
Built to EN 558-1, ISO 5752, EN 1092-2 and ISO 7005-2.
Available pressure classes
Pressure classes this product is rated to.
Used in
Related guides
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