Sourcing bulk cream-charger cylinders for resale or food service means one decision drives everything else: capacity. Too small andyou change cylinders all shift; too large and you tie up working capital in inventory your customers don't need. This guide compares RONGHAI's three core steel cylinder sizes — 0.95 L / 640 g, 2.2 L / 1364 g, and 3.3 L / 2000 g— across the specs that actually matter to importers, distributors and OEM buyers, so you can match the right cylinder to the right market.

Every cylinder in this lineup is built to ISO 11118 as a non-refillable steel gas cylinder, charged with food-grade nitrous oxide (N₂O) for culinary cream aeration, and rated at 120 bar working / 180 bar test pressure. Read on for the side-by-side table, then a size-by-size breakdown and a practical "how to choose" framework.

Why Cylinder Capacity Is the First Sourcing Decision

For B2B buyers, capacity is not just about volume — it sets your cost per gram, your packaging and freight profile, and the type of customer each size serves:

l Cost efficiency scales with size. Larger cylinders deliver a lower gas cost per gram and cut steel-packaging waste by 90%+ versus 8 g chargers.

l Handling differs by tier. The 640 g size behaves like a "large charger"; the 2000 g size is a fixed-installation bulk vessel used through a regulator.

l MOQ and logistics are capacity-linked. All three ship from a 1 × 20GP minimum, with mixed sizes allowed in one container (no consolidated LCL).

If your customers currently run 8 g chargers by the case, the comparison below shows exactly how many cases each cylinder replaces.

RONGHAI Cylinder Lineup at a Glance

Optional diameters: the 0.95 L size is also offered in a Ø70 mm series (150/225 bar optional); the 2.2 L in Ø118 mm; and the 3.3 L in Ø101–102 mm. Confirm availability and lead time with our sales team for custom configurations.

Detailed Comparison

0.95 L / 640 g — Compact & Café-Ready

The entry point of the bulk range and the natural upgrade from 8 g chargers. At 640 g net fill it replaces roughly 80 individual 8 g chargers, yet stays small enough to sit on a café prep counter.

l Footprint: Ø101–102 mm × 165 mm tall, 1.5 kg empty — easy to store and move.

l Use case: Independent cafés, dessert shops, and small distributors who want bulk economics without bulk handling.

l Logistics sweet spot: 6 pieces per carton, 504 per pallet, 10,080 pieces per 20GP — the highest piece-count-per-container of the three, ideal for distributors selling into fragmented retail.

2.2 L / 1364 g — The Mid-Volume Workhorse

The most balanced size for everyday food service. At 1364 g it equals about 170 × 8 g chargers, cutting change-overs roughly in half versus the 0.95 L while staying manageable on a cart or shelf.

l Footprint: Ø101–102 mm × 330 mm, 2.7 kg empty.

l Use case: Busy restaurants, patisseries and catering operations with steady daily volume; resellers serving the food-service mid-market.

l Value: Best "all-rounder" for distributors — large enough to win on cost-per-gram, small enough to stay flexible across customer types.

3.3 L / 2000 g — High-Volume Cost Leader

The flagship bulk vessel and the lowest cost per gram in the lineup. At 2000 g it replaces around 250 × 8 g chargers and is built from higher-grade Q355B steel with a 2.9 mm wall for the largest shell.

l Footprint: Ø118 mm × 370 mm, 3.5 kg empty.

l Use case: High-throughput commercial kitchens, central production facilities, and distributors/wholesalers supplying the high-volume segment.

l Note: Shipped 1 piece per carton (~160–192 per pallet). Best deployed through a fixed regulator station rather than carried between stations.

How to Choose the Right Capacity

1. Match size to your customer's monthly volume

A simple rule of thumb: once a site uses more than ~100 × 8 g chargers per month, a cylinder pays for itself in reduced per-gram cost and labour.

2. Plan for the regulator (bulk sizes)

The 2.2 L and 3.3 L cylinders are designed to connect to your customer's existing cream dispenser through a compatible pressure-reducing regulator (sold separately), which steps the supply down to the dispenser's safe working range (typically ~8–12 bar). Cylinders must never be connected directly to a dispenser. The 0.95 L size can be used with compatible dispenser adapters depending on the receiving market.

3. Storage, shelf life & recycling

l Storage: Cool, dry, out of direct sunlight, below 50 °C (cylinders are rated −20 °C to +50 °C). Keep upright in original cartons.

l Shelf life: Unopened cylinders do not "expire" in the usual sense; most brands cite 3–5 years under correct storage. Discard any unit with rust, dents or a hissing leak.

l End of life: Empty shells are recyclable steel — after full discharge, send to metal recycling. Never incinerate, and never discard a still-pressurised cylinder in general waste.

Specifications & Compliance

l Standard: Manufactured to ISO 11118 as non-refillable (disposable) steel cylinders.

l Pressure rating: 120 bar service / 180 bar hydrostatic test (Ø70 series optionally 150 / 225 bar).

l Quality: 100% leak-tested, batch-coded for traceability.

l EU market:GPSR / EU Authorized Representative in place (EUREPSTAR GmbH). Certification documentation for TPED π / CE and food-contact compliance is available on request to support your market-entry and customs filing.

l MOQ:1 × 20GP per order, with mixed sizes permitted in a single container (no LCL consolidation).

l OEM / private label: Logo, carton, and pallet customization supported; bottle colour options available.

Frequently Asked Questions

Q1. What is a cream-charger cylinder and how does it work?
 A cream-charger cylinder is a sealed, non-refillable steel vessel charged with food-grade nitrous oxide (N₂O). In use, the gas dissolves into chilled cream under pressure; when dispensed, it expands into fine, stable foam in seconds — a purely physical process with no heat, additives or flavour change. The 640 g / 1364 g / 2000 g sizes use the same principle and connect to a dispenser through a regulator.

Q2. Can these N₂O cylinders be refilled or reused?
 No. They are single-use by design and certification. Once the seal is pierced the valve cannot re-seal, and the shell is not built for repeated pressure cycles — refilling risks leaks, valve failure or rupture. Each cylinder is engineered for one safe discharge, after which the steel shell is recycled.

Q3. Should I buy 8 g chargers or bulk cylinders?
 For any operation using more than ~100 × 8 g chargers a month, bulk cylinders are the standard upgrade. One 0.95 L / 640 g cylinder ≈ 80 chargers; 2.2 L / 1364 g ≈ 170; 3.3 L / 2000 g ≈ 250. Bulk cuts gas cost per gram, reduces change-over labour, and lowers steel-packaging waste by 90%+.

Q4. Do the larger cylinders need a regulator, and how do I know when one is empty?
 Yes — the 2.2 L and 3.3 L sizes connect through a compatible pressure-reducing regulator (sold separately), never directly to a dispenser. To check remaining gas, read the regulator gauge or use the weighing method: remaining gas = total weight − tare (empty) weight printed on the label. Replace when the weight approaches tare; never refill.

Q5. How long does whipped cream stay fresh in a charged dispenser?
 A charged dispenser stored in the refrigerator keeps whipped cream fresh for roughly 1–2 weeks (7–14 days), because the pressurised, oxygen-free environment inhibits bacterial growth. Keep it chilled (4–7 °C), upright, and consume within 24 hours of dispensing for best texture.

Q6. How should cylinders be stored, and do they expire?
 Store unopened cylinders cool, dry, away from sunlight and heat, below 50 °C, upright in their cartons. They don't truly expire but most brands rate a 3–5 year shelf life under proper storage. Inspect before use and discard any with rust, dents or leaks.

Q7. Are empty cylinders recyclable?
 Yes — empty shells are recyclable steel. After full discharge, send them to metal recycling (some regions require puncturing first). Never incinerate a cylinder, and never discard a still-pressurised one in general waste; contact a local hazardous-waste service for unused or damaged units.

Q8. How many 8 g chargers does each RONGHAI cylinder replace?
 Approximately 80 for the 0.95 L / 640 g, 170 for the 2.2 L / 1364 g, and 250 for the 3.3 L / 2000 g — useful for quoting equivalent value to customers transitioning from chargers.

Source RONGHAI Bulk Cylinders (OEM & Wholesale)

RONGHAI supplies the 0.95 L / 2.2 L / 3.3 L steel N₂O cylinder range to importers, distributors and OEM / private-label buyers worldwide, with ISO 11118 manufacturing, EU GPSR representation, and mixed-size 20GP shipments. Contact our team for MOQ, certification paperwork, and custom branding — or browse the full cream-charger cylinder catalog.