Complete Sprinkler Systems — Factory Direct
Complete Fire Sprinkler Systems with UL Listed Components
Wanlian Fluid manufactures and exports UL listed sprinkler heads, flexible drop connections, alarm valves and system accessories for wet, dry and pre-action installations in commercial and industrial buildings — one factory order for the whole sprinkler loop.
Sprinkler System Components
Glass Bulb Fire Sprinkler (ZST Series)
Pendent/upright/sidewall, K=80/115, 57–141°C
Wet Alarm Check Valve (ZSFZ 150)
Hydraulic alarm gong, retard chamber, DN100–DN200
Deluge Alarm Valve Group (ZSFM)
Diaphragm-operated, for deluge and water spray systems
Pre-action Alarm System (ZSFY)
Dual-trigger failsafe for libraries, archives, data centers
Vane Type Water Flow Indicator (ZSJZ)
Adjustable 2–60s delay, DN50–DN200, saddle/flange
Telescopic Y-Strainer (SGL41H)
Protects valves from particulates, SS304/316 screen
Key Specifications
| Specification | Details |
|---|---|
| Certification | UL/ULC Listed (per model and destination market) |
| Sprinkler sizes | 1/2" (DN15), 3/4" (DN20), 1" — pendent, upright, sidewall |
| Flow coefficient | K=80 ±4 / K=115 ±9 (other K-factors per model) |
| Temperature ratings | 57°C / 68°C / 79°C / 93°C / 141°C, color-coded glass bulbs |
| Response types | Standard response (5mm bulb) / Quick response (3mm bulb) |
| System valves | Wet alarm (ZSFZ), deluge (ZSFM), pre-action (ZSFY), flow indicators (ZSJZ) |
Applications
Our sprinkler system components protect commercial office buildings, hotels, hospitals, schools, factories, warehouses, data centres and underground parking — with pre-action systems recommended for libraries, archives and computer rooms where accidental discharge must be avoided.
Why Choose Wanlian Fluid
- Complete system, one order — heads, connections, alarm valves and accessories quoted as a single package from one factory.
- Certified components — UL/ULC listed where applicable; certificates on our certificates page.
- Building-code oriented — configurations aligned with NFPA practice for global project acceptance.
Frequently Asked Questions
Are your sprinkler heads UL listed? +
Yes. Our sprinkler heads and system components are UL/ULC listed where applicable — certificates are available on our Certificates page. Our engineers confirm the exact certification package for your destination market before quoting.
What is the difference between wet and dry sprinkler systems? +
Wet systems keep water in the pipes for immediate discharge when a sprinkler head activates. Dry systems use pressurized air or nitrogen with a dry pipe valve, making them suited to unheated spaces where pipe freezing is a risk. Pre-action systems combine both benefits for water-sensitive areas.
Do you supply flexible sprinkler drop connections? +
Yes, we manufacture flexible stainless braided drop connections that simplify installation and allow fast repositioning of sprinkler heads to match ceiling layouts — reducing labor time compared to rigid piping.
Can you provide a full system BOM quotation? +
Yes. Send us your project drawings or a component list and we will quote sprinkler heads, alarm valves, flow indicators, strainers and accessories as one package — a single factory order for the whole sprinkler loop.
Which temperature ratings are available? +
Standard glass bulb ratings include 57°C, 68°C, 79°C, 93°C and 141°C with color-coded bulbs, in standard-response (5mm bulb) and quick-response (3mm bulb) types per NFPA practice.
Need Sprinkler System Components?
Send us your building type and component list — we reply with a full BOM quotation within 12 hours.