Staflux 185 / Staflux 187 — direct-acting gas pressure regulators, inlet up to 250 bar
Staflux 185 and Staflux 187 direct-acting gas pressure regulators without a separate pilot. Inlet pressure bpu up to 85 bar for Staflux 185 and up to 250 bar for Staflux 187, outlet Wd from 1 to 75 bar. For high-pressure transmission systems and medium-pressure distribution networks.
- Type
- direct-acting gas pressure regulator, diaphragm with counterpressure of the controlled pressure; Fail Open per EN 334
- Design pressure
- Staflux 185: up to 100 bar; Staflux 187: up to 250 bar
- Inlet pressure bpu
- Staflux 185: 2–85 bar; Staflux 187: 2–250 bar
- Outlet pressure Wd
- 1–75 bar
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
Staflux 185 and Staflux 187 are direct-acting gas pressure regulators for high-pressure systems. The control element is operated by a diaphragm. The controlled pressure acts on one side of it, and the counterpressure of the setting acts on the other. There is no separate pilot, so the design is simpler and responds faster to changes in flow rate.
The regulators are intended for high-pressure transmission systems and medium-pressure natural gas distribution networks and work only with pre-filtered non-corrosive gases. Under EN 334 both are classified as normally open (Fail Open). Staflux 185 is rated for pressure up to 100 bar, with inlet pressure bpu from 2 to 85 bar and outlet Wd from 1 to 75 bar. Sizes are 1″, 2″ and 3″, with flanged connections of classes 300 and 600 RF or RTJ per ASME B16.5. Accuracy class AC is up to 5, and lock-up pressure class SG is up to 10 depending on operating conditions. A built-in safety shut-off valve may be included in the configuration.
Staflux 187 is a model for very high inlet pressure. Design and maximum inlet pressure are up to 250 bar (bpu from 2 to 250 bar), outlet is 1–75 bar, nominal size is 1″, connections are class 1500 RF or RTJ flanges per ASME B16.5, AC is up to 5, SG is up to 10. This range suits pressure reduction of gas downstream of high-pressure compressors, at compressed gas stations, in gas offtake units for own needs and on test stands.
Staflux 187 is marked as Hydrogen Ready for natural gas and hydrogen blends, and a separate Staflux 187 H version is available for pure hydrogen. Design temperature of both regulators is from −20 to +60 °C. Direct-acting regulators of this class are usually used as pressure reducers on low and medium flow lines, for supplying pilots and impulse lines, and as the first stage of reduction. The possible combinations of options are described in the technical manuals, which the manufacturer issues in several languages.
Technical specifications
| Type | direct-acting gas pressure regulator, diaphragm with counterpressure of the controlled pressure; Fail Open per EN 334 |
|---|---|
| Design pressure | Staflux 185: up to 100 bar; Staflux 187: up to 250 bar |
| Inlet pressure bpu | Staflux 185: 2–85 bar; Staflux 187: 2–250 bar |
| Outlet pressure Wd | 1–75 bar |
| Nominal sizes | Staflux 185: 1″, 2″, 3″; Staflux 187: 1″ |
| Connections | Staflux 185: class 300/600 RF/RTJ; Staflux 187: class 1500 RF/RTJ (ASME B16.5) |
| Accuracy class AC | up to 5 (depending on conditions) |
| Lock-up pressure class SG | up to 10 |
| Temperature | from −20 to +60 °C |
| Options | SSV (Staflux 185); Staflux 187: Hydrogen Ready, Staflux 187 H version for 100 % H2 |
Request a price and lead time
Staflux 185 / Staflux 187 — direct-acting gas pressure regulators, inlet up to 250 bar. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What inlet pressure do Staflux 185 and Staflux 187 withstand?
Staflux 185 is rated for pressure up to 100 bar with inlet pressure bpu from 2 to 85 bar. Staflux 187 works at inlet pressure from 2 to 250 bar.
Which connections and sizes are provided?
Staflux 185 comes in sizes 1″, 2″ and 3″ with flanges of classes 300 and 600 RF or RTJ. Staflux 187 comes in size 1″ with flanges of class 1500 RF or RTJ.
Is there a version for hydrogen?
Staflux 187 is marked as Hydrogen Ready for natural gas and hydrogen blends. A Staflux 187 H version is available for pure hydrogen.
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