Surge-Suppression Combination Air Valve
The VALMERU MCS Surge-Suppression Combination Air Valve combines air release and air/vacuum functions with an integrated surge-check mechanism to help control high-velocity flow and reduce water-hammer risk. The intelligent velocity-control mechanism intercepts high-velocity flow to effectively reduce water-hammer and vortex effects, providing powerful protection for critical piping infrastructure.
DESCRIPTION
This groundbreaking convergence-type design combines complete air-management functions with an integrated surge-control mechanism in a single valve. MCS delivers rapid air discharge, continuous venting, vacuum relief and intelligent velocity control, providing a pioneering solution for demanding pipelines where conventional air valves alone may not provide sufficient surge management.
BENEFITS
- One-Stop Air Management Solution
- Ultimate Surge & Water Hammer Protection
- Intelligent Velocity Control Mechanism
- Instant Vacuum Relief (Negative Pressure Protection)
- Maximized Flow Efficiency & Energy Savings
- Heavy-Duty Durability for Harsh Environments
SPECIFICATIONS
- Small orifice : 0.8 mm ~ 6 mm
- Large orifice : 1 inch (ND 25A) ~ 30 inch (ND 750A)
- Flange : 1/2 inch (ND 15A) ~ 30 inch (ND 750A)
- ANSI, NPT, PT flange connection is available. Other flanges are to be discussed with technical sales person.
MATERIALS
| No. | Description | Spec. 1 | Spec. 2 | Spec. 3 |
|---|---|---|---|---|
| 1 | Body | A216-WCB | A351-CF8M | B148-C95800 |
| 2 | Cover | A216-WCB | A351-CF8M | B148-C95800 |
| 3 | Float | A240-316 | A240-316 | MONEL K400 |
| 4 | Gasket | NBR/EPDM | NBR/EPDM | NBR/EPDM |
| 5 | Bolt | STS 316 | A193-B8M/A194-B8 | STS 316(Xylar-2) |
| Air Release Valve for Small Orifice : Same as MAL type materials | ||||
| Hastelloy, Duplex series, incoloy series can available on request. | ||||
MCS – COMBINATION AIR VALVE with SURGE CHECK FAQ
When should I select MCS instead of the standard MCV?
MCS is intended for applications that need the combined air-management functions of MCV but also have surge-sensitive pipeline conditions. Its integrated Surge Check is designed to control high-velocity flow associated with air discharge and water-column movement.
Does MCS replace the need to review surge or water-hammer conditions in the piping system?
No. MCS is a valve option for supporting surge-sensitive systems, but it should not be treated as a substitute for evaluating the overall hydraulic and transient conditions of the pipeline.
What size and material options are available for MCS?
MCS is available in sizes from 1 inch (ND 25A) to 30 inch (ND 750A), featuring small orifices (0.8–6 mm) and large orifices (1"–30"). VALMERU can manufacture bodies in virtually all major materials—including Carbon Steel, Stainless Steel, and Nickel-Aluminum Bronze, as well as high alloys like Duplex, Super Duplex, Hastelloy, and Incoloy series. Flanged and custom connections can be provided to meet project requirements.
What information should be provided for MCS technical selection or quotation?
It is helpful to provide pipeline size, working pressure, expected surge or transient conditions, required connection standard, material requirements and relevant project operating information.