WVT Series Replaceable Membrane Expansion Tank (60L–500L, Carbon Steel)

Lead Pump's WVT Series Replaceable Membrane Expansion Tank (60L–500L, Carbon Steel) are premium pressure vessels designed for large-capacity water supply, heating, and solar thermal systems. Manufactured with a heavy-duty carbon steel shell and a fully replaceable butyl or EPDM bladder, the WVT series covers capacities from 60L to 500L with working pressures up to 16 bar. Each tank undergoes rigorous quality testing to ensure zero-defect delivery. The replaceable bladder design separates water from the pre-charged air cushion, stabilizing system pressure, reducing pump cycling frequency by up to 60%, and protecting against water hammer and thermal expansion damage. All units feature a 1" or 1½" threaded connector, anti-corrosion coating, and pre-charge pressure of 1.8–4.0 bar depending on model. With CE, NSF61, and ISO9001 certifications, Lead Pump expansion tanks are trusted by OEM buyers, distributors, and system integrators worldwide. Factory-direct pricing, 2-year warranty, and full customization — private labeling, packaging, and branding — are all available.

WVT SERIES — COMPLETE TECHNICAL SPECIFICATIONS

WVT Series Expansion Tank (Representative Image)

Key Benefits:

✔ Replaceable bladder — lower lifetime maintenance cost, no whole-tank replacement
✔ Full size range from 60L to 500L — one supplier covers all your project needs
✔ Pre-charged air cushion — instant response to pressure fluctuations
✔ Reduces pump cycling — extends motor life by up to 3x
✔ Eliminates water hammer & thermal shock — protects pipes, valves, fixtures
✔ Energy saving — fewer pump starts = lower electricity consumption
✔ Pressure gauge port available on request
✔ Multi-pressure rating per model — same tank adapts to different systems

TYPICAL APPLICATIONS

The WVT Series Replaceable Membrane Expansion Tank (60L–500L, Carbon Steel) is ideal for:
• Large residential water booster systems (apartment buildings, villas)
• Commercial water supply (hotels, schools, hospitals)
• HVAC heating/cooling closed-loop systems
• Solar thermal expansion compensation
• Industrial process water stabilization
• Irrigation pressure tanks for large farms

HOW TO SELECT THE RIGHT MODEL

Step 1: Calculate total system water volume (tank, pipes, boiler, etc.)
Step 2: Determine required working pressure (6–16 bar)
Step 3: Estimate thermal expansion volume (for heating: ~4.5% of total volume)
Step 4: Select tank capacity — the expansion tank should cover 1.5x the expected expansion volume
Step 5: Choose bladder material: Butyl (general), EPDM (higher temp), Natural rubber (drinking water)
Step 6: Confirm connector size and pre-charge pressure to match system cut-in/cut-out

FAQ

Q: Can I replace the bladder myself?
A: Yes. The WVT series features a flange-mounted replaceable bladder. A standard toolkit is sufficient for replacement. We provide installation manuals with every unit.

Q: Are Lead Pump tanks drinking water safe?
A: Yes. The WVT series is NSF61 certified for potable water contact. Butyl and natural rubber bladders are food-grade and odorless.

Q: Do you offer samples?
A: Absolutely. Sample orders are welcome. We can ship a pre-production sample within 15 days.

Q: What is the warranty?
A: 2-year manufacturer warranty against material and workmanship defects.

Q: Can I get custom branding?
A: Yes. OEM/private label is available — custom logo, packaging, instruction manual, and labeling.

Q: What's the minimum order quantity?
A: MOQ is 20 pcs.

Q: How long does the bladder last?
A: Under normal conditions (temp within spec, pre-charge maintained), 3–5 years typical service life.

WHY CHOOSE LEAD PUMP?

1. RISK-FREE GUARANTEE (Risk Concern)
   Every WVT Series Replaceable Membrane Expansion Tank (60L–500L, Carbon Steel) is factory-tested before shipment. Any quality issue? We offer replacement or full refund within the warranty period. No excuses, no delays.

2. FACTORY DIRECT, NO MIDDLEMAN (Price Concern)
   Lead Pump is the manufacturer — not a trading company. You get transparent factory pricing with zero hidden markups or broker fees.

3. PERFECT MATCH GUARANTEED (Matching Concern)
   Our technical team reviews your system parameters (pressure, temperature, volume) to recommend the exact WVT model. Wrong selection? We'll replace it at our cost.

4. SIMPLE COOPERATION PROCESS (Process Concern)
   Inquiry → Quote within 24h → Sample in 10 days → Production in 45 days → Shipping. MOQ: 20 pcs. Payment: T/T.

5. SEE FOR YOURSELF (Trust Concern)
   Request a factory video tour, product testing video, or physical sample. Check our numbers: annual output 1.2M+ units, exported to 30+ countries, ISO9001/CE/NSF61 certified.

PACKAGING & SHIPPING

• Standard export plywood crate with foam cushioning
• OEM packaging available (brand logo, box design, multilingual manuals)
• Delivery: FOB Ningbo/Shanghai by sea, or air/express for urgent orders

Get your quote: www.zjleadpump.com
Lead Pump — Lead Your Water Life Easier