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Combined Float Condensate and Thermostatic Air Vent for Steam Systems
This datasheet covers combined float and thermostatic air vent valves in SS316 for simultaneous condensate drainage and air venting from steam systems, process heaters, and steam coils.
| Parameter | Specification |
|---|---|
| Size Range | DN15 to DN50 (1/2" to 2") |
| Pressure Rating | PN40 / Class 300 / 50 bar max operating |
| Body Material | CF8M (SS316) cast stainless steel |
| Float Material | SS304 thin-walled float, helium leak tested |
| Thermostatic Element | Nickel-iron bimetallic strip or balanced-pressure capsule |
| Valve Plug / Seat | SS316 + Stellite 6 overlay |
| Temperature Range | -20°C to +300°C (standard) |
| Operating Principle | Float opens for condensate; thermostatic element opens for air |
| End Connections | Screwed NPT / BSPT, socket weld, flanged |
| Discharge Capacity | Condensate: 100 to 2,000 kg/h; Air: 20 to 300 m³/h |
| Features | Dual float + thermostatic, self-acting, high capacity, renewable trim |
| Component | Material |
|---|---|
| Body | CF8M (SS316) investment cast, machined float chamber and thermostatic port |
| Bonnet | CF8M bolted bonnet with float guide and thermostatic element retention |
| Float | SS304 thin-walled welded float, 100% helium leak tested, guided by SS316 cage |
| Thermostatic Element | Nickel-iron bimetallic strip or balanced-pressure capsule in SS316 housing |
| Valve Plug | SS316 with Stellite 6 overlay for condensate port; SS316 needle for air port |
| Seat | Integral CF8M with Stellite 6 hard facing; replaceable seat rings optional |
| Spring | SS304 compression spring for air port valve closure |
| Gaskets | Spiral-wound SS316 + graphite for body/bonnet joint |
| Test | Requirement |
|---|---|
| Test Standard | ISO 7842 / EN 26948 cold water test |
| Certification | CE, ISO 9001, IBR |
| Standard | Description |
|---|---|
| Design Standard | ISO 6552 / EN 26704 |
The Steam Air Vent Valve -- Float Thermostatic SS316 is designed, manufactured, and tested in accordance with applicable API / ASME / BS / ISO international standards. Compliance documentation and Material Test Certificates (EN 10204 3.1) are provided with every order.
Standard construction is carbon steel, stainless steel (CF8 / CF8M), and special alloy grades. Alternative and upgraded grades -- Duplex, Super Duplex, Inconel, Monel, Hastelloy, and NACE MR0175 trims for sour service -- are available on request.
It is offered in a range of sizes as per the technical specification with standard ANSI / ASME pressure classes (PN ratings on request). End connections include flanged (RF / RTJ), butt-weld, socket-weld, and screwed ends as per specification.
Yes. Supreme Valves India is an established exporter of industrial valves to Saudi Arabia (KSA), the UAE, Qatar, Kuwait, Oman, Bahrain, and across the Gulf. We provide sea-worthy export packing, EN 10204 3.1 / 3.2 certification, certificate of origin, and support for SABER / SASO conformity on KSA shipments.
Every valve undergoes hydrostatic shell and seat testing per API 598 / ISO 5208. Documentation includes EN 10204 3.1 MTC (3.2 on request), NDT reports, and fire-safe (API 607) or NACE MR0175 certification where applicable. Third-party inspection by TÜV, SGS, Bureau Veritas, or Lloyd's Register can be arranged.
Order quantities are flexible -- from single units for stocked items to bulk volumes for project requirements. Lead time depends on size, material, and quantity; please contact our team with your specification for a firm delivery schedule and quotation.