Plant-room equipment must control pressure, water supply, distribution and condensate return as separate duties; combining the wrong functions can destabilize loops or waste available system pressure.
Compare YONGFAN make-up vessels, packaged expansion skids, variable-frequency booster systems, direct non-negative pressure equipment, custom hydronic manifolds, and steam condensate recovery units.
Make-up pumps replace leakage, while bladder vessels accommodate thermal expansion. An oversized pump cannot replace a properly sized expansion tank.
Booster head must account for inlet pressure, friction losses, and fixture residual pressure—not just building floor counts or static height.
Connecting a booster directly to municipal mains without suction-side pressure monitoring risks collapsing public supply pressure.
Sizing steam condensate receivers from daily averages causes overflow when multiple batch traps discharge simultaneously.
Pre-charged bladder pressure vessels for closed HVAC loops. Replaceable food-grade butyl rubber bladder contains water while a dry nitrogen/air cushion absorbs volume changes. Prevents pump cycling by providing usable regulating volume (Vt) across 0.6, 1.0, and 1.6 MPa classes.
Integrated plant-room skid combining automated make-up, dual stainless multistage pumps, pressure stabilization, thermal expansion handling, overpressure relief, auto air venting, and low-water alarms. JFWP-A for compact footprints; JFWP-B with atmospheric expansion tank for bulk expansion retention.
Constant-pressure variable-frequency booster skids with integrated buffer tanks (Φ600–Φ800 mm). Buffer tank holds pressure during low/zero demand so main pumps can sleep. Staging up to 8 pumps in parallel with ≤0.01 MPa pressure regulation accuracy.
Boosts directly from pressurized municipal mains without an atmospheric break tank. Features an inlet non-negative-pressure vessel (600×1200 to 1800×3000 mm), full-flow bypass when municipal head is sufficient, and automated pump slowdown/cut-off to protect public mains.
Custom-engineered supply distributors and return collectors designed to maintain low header velocity (0.5–1.0 m/s) and eliminate circuit interaction. Available as individual headers or matched mirrored pairs in Q235-B, Q345R, SS304, or SS316L.
Packaged steam condensate collection and return skids. Incorporates pressure-regulating vessel, anti-cavitation inlet geometry, high-temperature condensate pump (80–180 °C), and automated level switching to return valuable boiler feedwater without flashing.
| Product Family | What It Solves | Published Range Boundary | First Input to Confirm | Action |
|---|---|---|---|---|
| Water Make-Up Units | Bladder-vessel pressure buffering and regulating volume | 0.20–8.53 m³ vessel · 0.6/1.0/1.6 MPa | Closed-loop water volume & pressure band | Configure JFDY |
| Pressure Stabilizing & Expansion | Integrated make-up, pressure stabilization & thermal expansion | 48–480 m³ loop capacity · 2.4–24 m³/h make-up | Total closed-loop water volume & A/B style | Configure JFWP |
| VFD Water Supply Equipment | Constant-pressure boosted supply from break tanks | 8–5,500 m³/h · 20–250 m head | Peak demand flow & target pressure | Configure JFHB |
| Non-Negative-Pressure Supply | Direct municipal boosting while protecting inlet mains | 8–280 m³/h · 20–250 m head | Municipal inlet-pressure profile & approval | Configure JFWZ |
| Water Distributors & Collectors | Splits and combines multiple hydronic branches | DN50–DN500 main · 2–12+ branches · ≤2.0 MPa | Total flow & branch flow schedule | Configure Manifold |
| Condensate Recovery Units | Returns hot steam condensate without pump cavitation | 1–100 t/h nominal · Up to 150–180 °C | Peak condensate flow & return temperature | Configure JFLN |
Closed HVAC loop, open potable booster, direct-mains connection, or steam condensate.
Peak flow rate (m³/h), total closed-loop water volume (m³), or peak condensate (t/h).
Inlet pressure (MPa), discharge setpoint, static elevation, and allowable pressure class.
Operating temperature range, Modbus/BACnet BMS requirements, and standby redundancy.
YONGFAN application engineers will calculate required vessel volume, pump head, velocity profiles, and provide GA layout drawings.
Every JFDY vessel, JFWP circuit, manifold, and JFLN receiver receives 1.5× design pressure testing held for 30 minutes.
Booster and expansion skids undergo full operational testing verifying VFD modulation, pump staging, and ±0.01 MPa regulation.
Automated submerged-arc welding on pressure vessels and manifolds with visual and NDT inspection on critical welds.
Control panels undergo hi-pot insulation checks, ground continuity tests, and PLC sequence verification before dispatch.
Start with Pressure Stabilizing & Expansion Units (JFWP) when you need integrated make-up and expansion control. Use Water Make-Up Units (JFDY) when the bladder pressure vessel is the primary component being specified.
No. VFD Water Supply Equipment (JFHB) is a variable-demand booster system for domestic/process water. Closed-loop expansion and pressure stabilization belong to JFDY or JFWP.
Non-Negative-Pressure Water Supply (JFWZ) connects directly to an approved municipal main and uses available inlet head. JFHB is designed for systems fed from atmospheric break tanks.
Use Water Distributors & Collectors. The manifold is customized from total flow, branch count, branch sizes, and system pressure.
No. Distributors and collectors balance and combine fluid streams; they do not generate pump differential pressure.
Use Condensate Recovery Units (JFLN). JFLN is selected from peak condensate flow and temperature and sits downstream of steam traps.
Do not use a domestic-water booster to stabilize a closed hydronic heating or cooling loop.
Do not connect JFWZ directly to municipal mains without confirming local water authority approval.
JFDY is the bare pressure vessel; pumps, valves, and controls must be specifically ordered if a skid is needed.
Do not size JFLN condensate units from average hourly return when batch processes create high short-term surges.
Send your hydraulic schematic, design flow, pressure regimes, and operating temperatures. YONGFAN application engineers will verify vessel volumes, pump heads, and provide complete submittal drawings.
