FLOWSERVE-SIHI Side Channel Pumps for Various Liquefied Gas Applications
Pumps of the CEH-X / CEH series are of a segmented design and are equipped with open impellers.
The design concept of the CEH pumps is based on a so-called combined centrifugal pump system. In this configuration, a centrifugal stage is connected in series upstream of the side channel stages, resulting in a significantly improved NPSH performance.
This ensures optimized suction behavior as well as safe and reliable operation even under demanding pumping conditions. Clean liquids can be conveyed reliably and trouble-free, even under unfavorable suction conditions.
Solutions for Autogas Filling Stations and Liquefied Gas Supply Systems
CEB – Vertical Tank Pumps for Liquefied Gas Applications
CEB container pumps with magnetic coupling are used for top-side extraction from underground storage tanks. They are designed for tanks with a maximum diameter of up to 6 m (19.7 ft) and ensure safe, hermetically sealed operation.
SM-X – Submersible Motor Pumps
The new SIHI SM-X submersible motor pump is hydraulically equipped with the proven side-channel technology, combining all the advantages of traditional side-channel pumps. The pump features a canned rotor motor, making it maintenance-free and hermetically sealed. It is especially suitable for demanding applications involving liquefied gases.
PC-X – side channel pumps
The new SIHI PC-X offers numerous advantages for both plant designers and operators of liquefied gas filling stations. By combining the proven side-channel technology with an innovative electronic drive, the PC-X is:
- hermetically sealed
- easy to install
- reliable and safe in daily operation
Thanks to its minimal maintenance requirements, the PC-X also impresses with low life-cycle costs.
CEH and SC – side channel pumps
The CEH and SC side-channel pumps are equipped with a special NPSH impeller. They are self-priming and capable of reliably handling gas fractions together with the conveyed medium.
Extraction Concepts
- Top-side extraction (or top withdrawal)
- Bottom-side extraction (or bottom withdrawal)
Solutions for Bottle Filling and Transport
UEA – centrifugal pumps
Multistage split-case pumps of the UEA series are designed for high flow rates and are used in suction service, e.g., for emptying and filling liquefied gas tanks as well as in transshipment terminals. The UEA pumps feature a suction stage (side-channel stage) that reliably prevents vapor lock, ensuring uninterrupted operation.
CEH – side channel pumps
The CEH side-channel pumps are equipped with a special NPSH impeller, allowing them to operate self-priming and to handle gas fractions together with the conveyed medium. Thanks to this design, the CEH pumps also operate quietly, making them particularly suitable for use in bottle filling and transport applications.
CEH and SC – Side-Channel Pumps with NPSH Suction Stage
Here’s a precise and professional English translation of your text:
The most common design of side-channel pumps is the horizontal configuration in split-case construction with an axial inlet. The side-channel stages, arranged on the discharge side, are preceded by a suction-side centrifugal impeller, optimally combining the two pumping principles:
- The upstream centrifugal stage (NPSH impeller) allows for low NPSH values and improves suction performance.
- The downstream side-channel stages ensure self-priming capability and the handling of gas fractions.
Thanks to this design, side-channel pumps can operate with very low inlet heights. Under certain conditions, NPSH values as low as 0.2 m can be achieved. Flow rates reach up to 35 m³/h (154 US gpm).
Key advantages at a glance:
- Simplified plant-side installation
- Low installation effort
- Reliable operation even with partial degassing of the conveyed medium
For unloading tank trucks, the CEH pump is also available with a hydraulic drive.
Technical Data
| Merkmal | CEH | SC |
|---|---|---|
| flow max. | 580 L/min (153 US gpm) | 67 L/min (18 US gpm) |
| Dif.pressure max. | 40 bar (580 psi) | 14,5 bar (210 psi) |
| RPM max. | 1.800 1/min | 2.900 1/min |
| Temperaturbereich | -20 °C bis 60 °C (-4 °F bis 140 °F) | -20 °C bis 60 °C (-4 °F bis 140 °F) |
| Gehäusedruck | PN 40 | PN 40 |
| Wellenabdichtung | Einfache oder doppelte Gleitringdichtung, Magnetkupplung | Einfache Gleitringdichtung |
CEB Vertical tank Pumps and UEA Split-Case Pumps
CEB – Vertical tank Pumps
The CEB pumps are used for conveying liquefied petroleum gas (LPG) in its boiling state.
- Equipped with a special suction stage that enables extremely low NPSH values.
- Cavitation- and vapor-free operation even at low tank levels.
- Installation length is adapted to the existing tank dimensions (standard: 1.3 – 3 m).
- Particularly suitable for autogas filling stations and for liquids stored under vapor pressure.
UEA – centrifugal pumps
The UEA pumps are gas-handling centrifugal pumps designed for pure liquid hydrocarbons and liquefied hydrocarbon gases (e.g., LPG).
- Main application: Unloading large storage tanks, rail tank cars, or tank trucks.
- Equipped with an NPSH suction stage that compensates for unfavorable inlet conditions.
- A downstream gas extraction stage ensures that gas accumulations in the suction line are reliably removed, guaranteeing smooth liquid conveyance.
| Merkmal | CEB | UEA |
|---|---|---|
| flow max. | 65 L/min (17 US gpm) | 3.700 L/min (977 US gpm) |
| dif.pressure max. | 15 bar (217 psi) | 20 bar (290 psi) |
| RPM max. | 2.900 1/min | 3.600 1/min |
| Temperaturbereich | -40 °C bis 60 °C (-40 °F bis 140 °F) | -40 °C bis 80 °C (-40 °F bis 176 °F) |
| Gehäusedruck | PN 40 | PN 25 / PN 40 |
| Wellenabdichtung | Magnetkupplung | Einfache oder doppelte Gleitringdichtung |