Spirax Sarco DCV3/DCV3LT Disc Check Valves
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Description
Spirax Sarco DCV3 and DCV3LT disc check valves are disc type flange-to-flange mounted check valves for a wide range of applications such as process piping, hot water systems, steam and condensate systems. The connection dimensions are in accordance with EN 558 part 1, series 49. The standard product is a metal seat for steam systems. For oil, air, gas and water systems, other materials are available.
Available Models
| Available types | SKU |
|---|---|
| DN15 DCV3 EPDM | 1346092 |
| DN15 DCV3 METAL | 1346090 |
| DN15 DCV3 VITON | 1346091 |
| DN20 DCV3 EPDM | 1346192 |
| DN20 DCV3 METAL | 1346190 |
| DN25 DCV3 EPDM | 1346292 |
| DN25 DCV3 METAL | 1346290 |
| DN25 DCV3 VITON | 1346291 |
| DN32 DCV3 EPDM | 1346392 |
| DN32 DCV3 METAL | 1346390 |
| DN40 DCV3 EPDM | 1346492 |
| DN40 DCV3 METAL | 1346490 |
| DN40 DCV3 VITON | 1346491 |
| DN50 DCV3 EPDM | 1346592 |
| DN50 DCV3 METAL | 1346590 |
| DN50 DCV3 VITON | 1346591 |
| DN65 DCV3 EPDM | 1346692 |
| DN65 DCV3 METAL | 1346690 |
| DN80 DCV3 EPDM | 1346792 |
| DN80 DCV3 METAL | 1346790 |
| DN80 DCV3 VITON | 1346791 |
| DN100 DCV3 EPDM | 1346892 |
| DN100 DCV3 METAL | 1346890 |
| dn25 dcv10 pn16 jis/ks10 | 16018000 |
| DN25 DCV10 ANSI150/300 | 6018092 |
| DN25 DCV10 ANSI150/300 Inconel spring | 6018093 |
| DN40 DCV10 ANSI150/300 | 6018200 |
| DN40 DCV10 ANSI150/300 Inconel spring | 6018215 |
| dn40 dcv10 pn16 jis/ks10 | 16018100 |
| dn50 dcv10 pn16 jis/ks10 | 16018300 |
| DN50 DCV10 ANSI150/300 | 6018305 |
| dn80 dcv10 pn16 jis/ks10 | 16018400 |
| DN80 DCV10 ANSI150/300 | 6018450 |
| dn100 dcv10 pn16/25/40 jis/ks10k & 20k ansi150/300 | 16019000 |
| DN125 DCV10 PN16/25/40, JIS/KS10K & 20K ANSI150/300 | 16019193 |
| DN150 DCV10 PN16/25/40, JIS/KS10K & 20K ANSI150/300 | 16019293 |
| DN200 DCV10 PN16/25/40, JIS/KS10K & 20K ANSI150/300 | 16019393 |
| DN250 DCV10 PN16/25/40, JIS/KS10K & 20K ANSI150/300 | 6019493 |
Other options
- Heavy-duty springs for boiler feed water (700 mbar opening pressure, up to DN 65).
- Viton soft seats for oil, gas and air systems.
- EPDM soft seat for water system applications.
Standards and certificates
- Conforms to the European Equipment Report 97 / 23 / EC.
- Valves according to EN 12266 rate E as standard, valves according to EN 12266 rate D on request, soft seats according to EN 12266 rate A at certain differential pressures.
- Provide "Test Report", if EN 10204 3.1 material certificate is required, please specify when ordering.
Size and Caliber Links
Bore sizes are DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80 and DN100, which can be installed in BS 10 Tables 'E' and 'H', EN 1092 PN6, PN10, PN16, PN25 and PN40; JIS 5, JIS 10, JIS 16, JIS 20 flanges, but DN40, DN50, DN80 and DN100 cannot be installed between JIS 5 flanges and DN65 and DN80 cannot be installed between BS 10 'E' flanges.
makings
The valve body, discs, spring positioners, standard springs, heavy-duty springs, high-temperature springs and other components are mainly made of austenitic stainless steel, and the heavy-duty springs are made of the nickel alloy Nimonic 90.
Scope of work and limitations
- DCV3LT can be used down to -60°C and DCV3 down to -10°C.
- DCV3 configured with high temperature springs or DCV3/DCV3LT without springs can be used in specific areas.
- The operating range of products with different seat materials (Viton and EPDM seats) is limited by the seat material.
- Parameters related to the design level of the valve body (PMA maximum permissible pressure, TMA maximum permissible temperature, etc.), different types of springs correspond to different working pressures and temperatures.
- Designed for a maximum cold hydrostatic test pressure of 60 bar g.
weights
| caliber | Weight (kg) |
|---|---|
| DN15 | 0.13 |
| DN20 | 0.19 |
| DN25 | 0.32 |
| DN32 | 0.55 |
| DN40 | 0.74 |
| DN50 | 1.25 |
| DN65 | 1.87 |
| DN80 | 2.42 |
| DN100 | 3.81 |
Kv value
| DN | Kv |
|---|---|
| 15 | 4.4 |
| 20 | 6.8 |
| 25 | 10.8 |
| 32 | 17 |
| 40 | 26 |
| 50 | 43 |
| 65 | 60 |
Opening pressure (mbar)
The opening pressure of standard and high temperature springs in the absence of flow is different for different sizes. When lower opening pressures are required, check valves without springs can be used, ensuring that the pipeline is vertical and the flow direction is from bottom to top, with a heavy-duty spring opening pressure of 700 mbar.
Ordering Instructions
For example, order a Spirax Sarco DN50 DCV3 check valve, stainless steel, to be installed between EN1092 PN25 flanges.
Installation and maintenance
Refer to the Installation and Maintenance Guide (IM-P134-08) supplied with the product for details.DCV check valves should be installed as indicated by the flow direction arrows on the body.Check valves with springs can be installed in any direction.Check valves without springs need to be installed on vertical piping in the direction of flow from the bottom to the top. The cam design of the valve body allows it to fit different mounting flanges. Flanges, bolts and nuts are supplied by the installer. Disc check valves are not available with spare parts and cannot be used in severe pulsation.
deal with
Fluorinated rubber parts products used near 315°C or higher may decompose and form hydrofluoric acid, which should be avoided by skin contact and inhalation. Fluorinated rubber should be disposed of in the manner recommended by the Installation and Maintenance Guide, and will not cause environmental hazards if disposed of properly.
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