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Packed Valves
The packed valves are the long-time workhorses for corrosive and specialty gas service applications. Although the design of these valves is simple, they are robust and are repaired with replaceable components, for quick fixes. Used in specialty gas services such as Anhydrous Ammonia (NH3), Hydrofluorocarbons (HFC) and a large variety of corrosives, listed here Anhydrous Ammonia (NH₃), Boron Trichloride (BCl₃), Carbonyl Fluoride (COF₂), Chlorine (Cl₂), Hydrogen Cyanide (HCN), Nitric Oxide (NO), Nitrogen Dioxide (NO₂), Nitrogen Trioxide (N₂O₃), Phosgene (COCl₂), Sulfur Dioxide (SO₂), and Sulfuryl Fluoride (SO₂F₂). . Evergreen offers a full series of packed valves, for maximum user convenience, we also offer the replacement parts.
Specifications and key features that make these valves unique:
- Unitized pressure relief device with fuse metal backing*
- Broad resistance to various corrosive gases
- Gas resistance and applications include - hydrogen sulfide (H₂S), methyl bromide (CH₃Br), boron trifluoride (BF₃), anhydrous hydrogen chloride (HCl), sulfur dioxide (SO₂), and chlorine (Cl₂)**
- Positive shut-off due to one-piece Monel stem design for 1210/1214/1214Y series
- Nickel-plated steel stems for durability for the 1206A series
- Inlets and outlets as per CGA standard connections and comply with international connections
- Leak resistant stem seal
- Durable construction and ease of operation
- Tapped inlet threads (optional) for dip tube assembly
Available with or without a pressure relief device. These valves are offered with various CGA options across the series, including 660, 705, 330, and 240. Configurations and gas-service compatibility vary by model. Contact Evergreen Midwest for purchasing questions or to register with us please click here.
Packed Valve Data Sheet(s)
Evergreen Top-Selling Packed Valves
*Fuse metal backing is not universally applicable, please call for more detail
** Not all gas applications listed are applicable to every valve series, please call for clarification if you are unsure
