Walchem EZB11D1-VC Metering Pump → Now the EWP-045BVC07N-USL
Original price was: $514.00.$408.50Current price is: $408.50.21% OFF
This model has been upgraded. The Walchem EZB11D1-VC has been discontinued by the manufacturer and replaced with the EWP-045BVC07N-USL, its direct 1:1 equivalent. All EZB11D1-VC orders now ship as the EWP-045B — same PVC wet end, same connection size, and fully compatible spare parts, with an upgraded control system.
The Walchem EWP-045BVC07N-USL (formerly the EZB11D1-VC) delivers precise and reliable chemical dosing for industrial and commercial applications. It provides a flow rate of 0.7 GPH at up to 150 PSI and features durable PVC construction for excellent chemical resistance — the same materials and reliability water treaters trusted in the original EZB Series.
Designed for water treatment, cooling towers, and process systems, this diaphragm metering pump now offers an improved 1800:1 turndown ratio (up from 360:1 on the EZ Series), plus new 4-20mA and pulse input control for automation. Its compact, IP66-rated housing allows easy installation, while low-maintenance operation ensures long service life.
Looking for your original EZB11D1-VC? You’re in the right place — this is its factory-authorized replacement.
Technical Specifications
| Specification | Details |
|---|---|
| Model | EWP-045BVC07N-USL (replaces EZB11D1-VC) |
| Flow Rate | 0.7 GPH (45 mL/min) |
| Pressure Rating | Up to 150 PSI (1.0 MPa) |
| Pump Type | Diaphragm metering pump |
| Construction Material | PVC |
| Power Supply | 100–240V AC (universal) |
| Control Type | Manual dial (Stroke Rate / Stroke Length) + 4-20mA / pulse input |
| Turndown Ratio | 1800:1 |
| Ingress Protection | IP66 (water/dust-proof) |
| Design | Compact and durable |
| Maintenance | Low maintenance, fewer moving parts |
| Applications | Water treatment, cooling towers, process systems |
Replacing an existing EZB11D1-VC in the field?
Good news — the spare parts kit is unchanged. The N11VC-PK replacement kit fits both the legacy EZB11D1-VC and the new EWP-045BVC07N-USL, so your existing maintenance stock remains valid.
How the Walchem EZB11D1-VC Metering Pump Ensures Accurate Chemical Dosing
Now upgraded to the EWP-045BVC07N-USL — the direct factory replacement for the EZB11D1-VC.
The Walchem EZB11D1-VC metering pump has long delivered precise and reliable chemical dosing for professional water treatment and industrial applications. Today, this model ships as the EWP-045BVC07N-USL, its official 1:1 replacement, built on the same trusted PVC platform with an upgraded control system for even greater accuracy.
As part of the Walchem EZB Series lineage, this pump combines a compact design with dependable output. It delivers up to 0.7 GPH at 150 PSI, making it suitable for demanding dosing requirements. Because of this, it performs well in systems that require consistent and controlled chemical feed.
In addition, the adjustable stroke length and frequency allow operators to fine-tune dosing with ease. The new 1800:1 turndown ratio — a major upgrade from the original 360:1 — gives even finer control across changing system conditions. The durable PVC construction also provides excellent chemical resistance. As a result, the pump can handle acids, bases, and salts with confidence.
Moreover, the diaphragm-type design ensures leak-free operation and steady flow. It maintains dosing accuracy even when system pressure varies. The high-speed performance further reduces slug feeding, which improves precision in applications such as pH control, disinfection, and corrosion prevention.
Furthermore, the pump now features an IP66-rated housing, protecting it against water and dust exposure even without the optional splash guard. This makes installation more forgiving in harsh or exposed environments.
Finally, the EWP-045BVC07N-USL features a low-maintenance design and operates on a universal 100–240V power supply, an upgrade from the fixed 115V of the original EZB11D1-VC. This ensures reliable performance in water treatment systems, cooling towers, and industrial processes.
Already own an EZB11D1-VC? Your existing spare parts kit remains fully compatible — no need to requalify your maintenance stock.
Available from Water Treatment Supply, the Walchem EZB11D1-VC — now the EWP-045BVC07N-USL — is a trusted solution for professionals who demand accuracy, durability, and consistent chemical dosing.
Specifications and Applications of the Walchem EZB11D1-VC Metering Pump
Now shipping as the EWP-045BVC07N-USL — the direct, factory-authorized replacement for the EZB11D1-VC.
The Walchem EZB11D1-VC Metering Pump is a compact, high-performance dosing pump designed for accuracy, reliability, and ease of use. This model has been upgraded by the manufacturer to the EWP-045BVC07N-USL, now delivering a maximum output of 0.7 gallons per hour (GPH) at up to 175 PSI, making this a chemical metering pump designed for precision in water treatment, cooling tower, and industrial process systems.
The Walchem EZB11D1-VC lineage ensures excellent chemical compatibility and long-lasting corrosion resistance. Its PVC design makes it ideal for dosing a wide range of treatment chemicals such as chlorine, acids, alkalis, and anti-scalants, even in demanding environments.
Powered by a universal 100–240V single-phase supply (upgraded from the original fixed 115V), this Walchem metering pump provides stable and efficient operation with low power consumption, perfect for both commercial and light industrial setups. Its mechanically actuated diaphragm ensures leak-free dosing and minimal maintenance, offering dependable performance for continuous or intermittent operation.
Operators can fine-tune performance with adjustable stroke length and frequency controls via two simple physical dials, now supported by an 1800:1 turndown ratio — a major precision upgrade from the original 360:1 — allowing for even more precise chemical feed tailored to system requirements. Combined with its durable thermoplastic construction, IP66-rated housing, and compact wall-mountable design, the EWP-045BVC07N-USL is both easy to install and built to last.
Whether used in boiler feed systems, cooling tower treatment, or industrial water conditioning, the Walchem EZB11D1-VC Metering Pump — now the EWP-045BVC07N-USL — delivers the accuracy, safety, and durability that maintenance professionals and engineers rely on for consistent chemical dosing performance.
Already have an EZB11D1-VC installed? Your existing spare parts kit (diaphragm, check valves) remains fully compatible with the new model — no need to requalify maintenance stock.
Use Cases & Industry Applications
- Water Treatment Systems — The Walchem EZB11D1-VC (EWP-045BVC07N-USL) provides precise and consistent chemical dosing for pH control, disinfection, and corrosion prevention, ensuring optimal water quality in treatment plants.
- Cooling Towers — Perfect for chemical feed in cooling tower bypass systems, this Walchem metering pump helps prevent scale buildup, biofilm growth, and corrosion, keeping system efficiency high.
- Boilers & Closed-Loop Systems — The EZB11D1-VC 0.7 GPH 175 PSI pump maintains accurate chemical feed for boiler water conditioning, protecting against scaling and extending equipment life.
- Industrial Process Applications — Ideal for controlled dosing of acids, alkalis, and other process chemicals, this Walchem dosing pump supports manufacturing operations that require reliable and repeatable metering.
- Commercial & Institutional Facilities — From HVAC systems to building water management, the Walchem EZB11D1-VC ensures safe, efficient chemical dosing for smooth, long-term system performance.
No replacement parts listed for this item yet.
FAQs
Q1. What is the Walchem EZB11D1-VC used for?
The Walchem EZB11D1-VC metering pump is designed for precise chemical dosing in water treatment, cooling tower, and boiler systems, ensuring accurate control for disinfection, pH balance, and corrosion prevention. This model now ships as the EWP-045BVC07N-USL, its direct factory replacement, with the same applications and PVC construction.
Q2. Has the Walchem EZB11D1-VC been discontinued?
Yes. The EZB11D1-VC has been replaced by the manufacturer with the EWP-045BVC07N-USL, a confirmed 1:1 equivalent per Walchem/Iwaki’s official crossover matrix. All orders for the EZB11D1-VC now ship as this upgraded model, with the same PVC wet end and fully compatible spare parts.
Q3. What is the flow rate and pressure capacity of this pump?
This Walchem EZB pump lineage now delivers up to 0.7 gallons per hour (GPH) at a maximum pressure of 175 PSI (upgraded from the original 0.6 GPH / 150 PSI rating), providing steady, reliable metering performance for demanding industrial and commercial applications.
Q4. Can this pump handle corrosive or aggressive chemicals?
Yes. With a PVC pump head and ceramic valve components, the EZB11D1-VC / EWP-045BVC07N-USL offers excellent chemical compatibility and resistance, making it suitable for handling a wide range of mild to moderately aggressive chemicals.
Q5. Is the Walchem EZB11D1-VC suitable for continuous operation?
Yes. Built for durability, this Walchem dosing pump supports continuous duty cycles and now includes an improved 1800:1 turndown ratio for finer, more consistent chemical feed in critical systems.
Q6. What are the power requirements for the Walchem EZB11D1-VC?
The updated EWP-045BVC07N-USL operates on a universal 100–240V single-phase power supply (upgraded from the original fixed 115V), making it even easier to integrate into standard industrial, commercial, and water treatment setups worldwide.
Q7. Will my existing EZB11D1-VC spare parts still work?
Yes. The spare parts kit (diaphragm, check valves, seals) is identical between the EZB11D1-VC and the new EWP-045BVC07N-USL — no need to requalify your maintenance stock.
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