Penberthy Jet Pumps
Penberthy Jet Pumps: Reliable, Maintenance-Free Solutions for Pumping, Mixing, and Heating
Penberthy jet pumps, also known as Penberthy eductors, deliver practical, simple, and cost-effective performance for process industries worldwide. Since 1886, the Penberthy brand (now part of Emerson) has engineered these no-moving-parts devices to pump, mix, or heat a wide range of liquids, gases, and solids using motive media such as liquid, steam, or air. Self-priming, lubrication-free, and virtually maintenance-free, Penberthy jet pumps install easily without special foundations and operate efficiently in harsh environments.
How Penberthy Jet Pumps (Eductors) Work
Penberthy jet pumps operate on proven fluid dynamics principles. Pressurized motive fluid (liquid, steam, or gas) enters the inlet, accelerates through a precisely machined nozzle, and creates a partial vacuum in the suction chamber. This vacuum draws in the suction medium, where it mixes with the motive stream before discharging at an intermediate pressure. The smooth, step-free internal flow paths maximize efficiency across all models.
- Motive: Provides power via converging or converging/diverging nozzles.
- Suction: Entrains liquids, gases, vapors, or solids.
- Discharge: Delivers the combined stream at reduced pressure.
This design makes Penberthy eductors ideal for applications where traditional pumps would require high maintenance or fail under corrosive, abrasive, or high-temperature conditions.
Broad Range of Penberthy Jet Pump Models and Applications
The Penberthy jet pumps line covers every process need. Models are grouped by suction and motive media for quick selection:
- Liquid motive / liquid suction (Models LL, LM, LH): Liquid transfer, sump pumping, in-line blending, elevating liquids, and boosting centrifugal pump suction.
- Steam motive / liquid suction (Models GL, GH): Liquid transfer and lifting where minimal motive infusion is desired.
- Steam or gas motive / gas suction (Models GL, GH, U, L, 2NC): Evacuation, vacuum creation, priming, and fume removal.
- Liquid motive / gas suction (Models LM, ELL, FL): Gas evacuation, vacuum production, aeration, and scrubbing.
Penberthy tank mixing eductors (Models CTE and TME) excel at in-tank blending of liquids, slurries, and solids. These Penberthy tank mixing eductors create powerful circulation patterns that outperform mechanical mixers or air sparging. They handle viscosities up to 2,000 cPs with mixing ratios of 3:1 (CTE) or 4:1 (TME) and pressure differentials of 10–100 psig. Non-clogging and maintenance-free, Penberthy tank mixing eductors prevent stratification, suspend abrasives, and integrate additives in chemical, food, wastewater, and electroplating tanks.
Penberthy tank heating eductors (Models NWH, CTE, XL-32, and RJ) combine heating and circulation in a single submerged unit. These Penberthy tank heating eductors maximize steam condensation for rapid, uniform temperature rise (up to 120 °F / 49 °C) while agitating the tank contents. Model CTE doubles as both a Penberthy tank mixing eductor and Penberthy tank heating eductor, delivering strong mixing during heating. Quiet operation, low steam-pressure capability (as low as 3 psig on XL-32), and final tank temperatures up to 170 °F (77 °C) make Penberthy tank heating eductors perfect for cooking, mash processing, starch production, and homogeneous liquid distribution.
Additional specialized Penberthy jet pumps include:
- In-line heating (Models ELL, HLM, SRH).
- Solids wetting and flocculant dispersal (Model 62DP).
Specifications, Materials, and Sizes
Penberthy jet pumps and Penberthy eductors are available in sizes from ¼” to 4″ (cast) and larger fabricated units. Standard materials include:
- Cast: low-lead bronze, iron, carbon steel, 316 stainless steel.
- Fabricated: carbon steel, 316 stainless steel.
- Non-metallic: PVC, PP, glass-filled PP, PVDF (Kynar™).
Special linings (ceramic nozzles, fluoroelastomer, Tefzel™) extend life in erosive or corrosive services. All models meet rigorous quality standards and are backed by Emerson’s global support network.
Options and Accessories for Penberthy Jet Pumps
Enhance performance with wrench-flat designs for easy installation, ceramic nozzles for solids handling, and automatic injectors or submersible sump drainers for specialized duties. Emerson provides complete application assistance, performance datasheets, and custom selection support.
Why Choose Penberthy Jet Pumps and Eductors?
- Zero moving parts — virtually maintenance-free.
- Self-priming and simple installation.
- Handles liquids, gases, vapors, slurries, and solids.
- Proven in chemical, petroleum, power generation, food, wastewater, mining, and pharmaceutical industries.
- Penberthy tank mixing eductors and Penberthy tank heating eductors deliver unmatched efficiency for in-tank processes.
Whether you need Penberthy jet pumps for pumping, Penberthy eductors for vacuum or priming, Penberthy tank mixing eductors for thorough agitation, or Penberthy tank heating eductors for rapid heating and circulation, the Penberthy line offers the broadest, most reliable selection available.
Penberthy Jet Pump Sizing Guide
Penberthy jet pumps (also known as Penberthy eductors) offer a simple, reliable way to pump, mix, or heat liquids, gases, and solids. Because Penberthy jet pumps and Penberthy eductors have no moving parts, sizing focuses on matching motive pressure, suction conditions, discharge requirements, and media characteristics to the correct model and size. This guide walks you through the process using the official Penberthy 2017 Application Guide data.
Step-by-Step Penberthy Jet Pump Sizing Process
- Define the Application
Identify the suction (transport) medium and motive (operating) medium. Use the Penberthy process application table (below) to select the correct model family. - Gather Key Operating Parameters
- Motive pressure (psig / kPag) available at the inlet
- Required suction flow rate or lift (ft / m of water or equivalent)
- Desired discharge pressure/head
- Temperature, specific gravity, viscosity, and solids content of suction and motive media
- Required capacity (gpm or scfm)
- Select Model Family
Match to the model specifications tables on the following pages. - Choose Size and Material
Sizes range from ¼” to 4″ (cast) and larger (fabricated). Select materials based on corrosion, erosion, or temperature needs. - Verify Performance
Detailed capacity curves, mixing ratios, and exact flow/pressure relationships are published in the dedicated datasheets listed for each model group.
Penberthy Jet Pump Process Application Guide (Model Selection Table)
| Suction Medium | Motive → Liquid | Motive → Steam | Motive → Gas (Air) |
|---|---|---|---|
| Liquid | LL, LM, LH – transfer, sump pump, blend, lift, boost | GL, GH – transfer, lift | GL, GH (by request) – transfer, lift |
| Steam | CTE, TME – in-tank mix | NWH, CTE, XL-32, RJ – in-tank heat | — |
| Gas | ELL, HLM, SRH – heat in-line LM, ELL, FL – evacuate, vacuum | GL, GH, U, L, 2NC – exhaust, evacuate, vacuum | GL, GH, U, L, 2NC – exhaust, evacuate, vacuum |
| Solids | LL, LM, LH – slurries LM, ELL – powders CTE, TME – in-tank mix 62DP – wetting | GL, GH – slurries NWH, CTE, XL-32, RJ (P14-15) – in-tank heat | — |
Model-Specific Sizing Specifications
Pumping Liquid – Liquid Motive (Penberthy jet pumps LL, LM, LH)
Based on water, Sp. Gr. = 1.0
- Motive pressure range: 15–200 psig (100–1380 kPag)
- LL (Low Head): Nominal 2 psig motive per psig discharge; discharge head to 50 ft (15.2 m)
- LM (Medium Head): Nominal 1.5 psig motive per psig discharge; discharge head 40–80 ft (12.2–24.4 m)
- LH (High Head): Nominal 1 psig motive per psig discharge; discharge head ≥80 ft (24.4 m)
- Suction lift (all): to 27 ft (8.2 m)
- Minimum NPSH: 3 ft (0.9 m)
Pumping Liquid – Steam Motive (Penberthy jet pumps GL, GH)
- Motive steam pressure range: 35–150 psig
- GL (Low Head): 150 psig motive to lift 50 ft
- GH (High Head): 75 psig motive to lift 50 ft
- Suction lift (water ≤120 °F): to 20 ft (6.1 m)
- Minimum NPSH: 13 ft (4 m)
Pumping Gas – Steam or Gas Motive (Penberthy eductors GL, GH, U, L, 2NC)
- Motive pressure: 20–200 psig depending on model
- Application range: 0.5–30 in Hg Abs
- Functions: Evacuate, exhaust, prime, produce vacuum
Pumping Gas – Liquid Motive (Penberthy eductors LM, ELL, FL)
- Motive liquid pressure: 20–200 psig
- Application range: 1–30 in Hg Abs
- Functions: Evacuate, exhaust, prime, aerate
Heating Liquids In-Tank (Penberthy tank heating eductors NWH, CTE, XL-32, RJ)
- Max water temperature rise: up to 120 °F (49 °C)
- Max final tank temperature: 160–170 °F (71–77 °C)
- CTE also functions as Penberthy tank mixing eductor
Heating Liquids In-Line (Penberthy jet pumps ELL, HLM, SRH)
- Steam pressure: up to 150 psig
- Max ΔT: up to 216 °F (102 °C)
- Max capacity: up to 5,000 gpm (ELL/HLM)
Mixing Liquids In-Tank (Penberthy tank mixing eductors CTE, TME)
- Pressure differential inlet-to-tank: 10–100 psig
- Mixing ratio: 3:1 (CTE) or 4:1 (TME)
- Max viscosity: 2,000 cPs
Wetting Solids – Flocculant Dispersal (Model 62DP)
- Water flow at 20–100 psig inlet: 8–20 gpm (¾” size)
- Wets 5 lb powder per 10–15 gal water
Construction & Materials for All Penberthy Jet Pumps & Eductors
- Sizes: ¼”–4″ cast; 4″+ fabricated
- Materials: Low-lead bronze, iron, carbon steel, 316 stainless steel, PVC, PP, glass-filled PP, PVDF (Kynar™)
- Special options: Ceramic nozzles, fluoroelastomer lining, Tefzel™ lining, wrench-flat design
Tips for Accurate Sizing of Penberthy Jet Pumps
- Motive pressure must exceed discharge pressure plus friction losses.
- Suction lift is limited by vapor pressure and NPSH.
- For Penberthy tank mixing eductors and Penberthy tank heating eductors, circulation pattern and tank geometry affect performance—multiple units may be required for large or elongated tanks.
- Always verify final performance with the model-specific datasheet (VCTDS-04502 for liquids, VCTDS-04503 for gases, VCTDS-04504 for heating, VCTDS-04505 for mixing).
How to Order or Get Precise Sizing Support
Complete the online application form with motive, suction, and discharge conditions or contact your local Emerson sales representative. They will use the full Penberthy performance curves to select the exact size and model.
Penberthy jet pumps, Penberthy eductors, Penberthy tank mixing eductors, and Penberthy tank heating eductors deliver decades of maintenance-free service when sized correctly. For detailed performance curves and capacity tables reach out today.
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Penberthy Jet Pump Models:
| Penberthy Model: |
|---|
| Penberthy Model LL |
| Penberthy Model LM |
| Penberthy Model LH |
| Penberthy Model GL |
| Penberthy Model GH |
| Penberthy Model HLM |
| Penberthy Model ELL |
| Penberthy Model RJ |
| Penberthy Model CTE |
| Penberthy Model TME |
| Penberthy Model U |
| Penberthy Model L |
| Penberthy Model 2NC |
| Penberthy Model FL |