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What Does Z41H-16C Stand For? Full Code Explanation & Basic Technical Parameters of Z41H-16C Gate Valve
2026-08-07
In industrial pipeline procurement, engineers and purchasers frequently encounter the model Z41H-16C Gate Valve, which is one of the most widely used hard-sealed wedge gate valves in domestic and international industrial supporting pipelines. Many novice buyers fail to understand the specific meaning of each letter and number in the model code, resulting in improper type selection, mismatched pressure grade and unsuitable working conditions. This article thoroughly decodes the complete naming rule of Z41H-16C, sorts out its standard structural parameters, applicable temperature and pressure range, so as to help users quickly identify product configuration and realize accurate procurement.
The valve model complies with China GB/T standard valve compilation rules, and each character corresponds to fixed structural type, driving mode, connection form, sealing surface material, nominal pressure and valve body material.
1. The first letter Z: Code for Gate Valve. It represents that this product belongs to gate valve, which realizes pipeline full open and full shutoff by lifting and lowering the wedge gate plate; it cannot be used for flow regulation.
2. Number 4: Flange connection mode. The valve body adopts flange butt joint with pipeline, which is convenient for on-site disassembly, maintenance and installation, suitable for fixed industrial pipelines that require frequent overhaul.
3. Number 1: Rising stem wedge single gate plate structure. The valve stem stretches out synchronously when opening the valve; the lifting height can be observed directly on site, which is convenient for operators to judge the opening state intuitively. The wedge single gate plate ensures excellent sealing performance under medium pressure.
4. Letter H: Alloy hard sealing surface. Hard alloy surfacing is carried out on the contact surface between gate plate and valve seat. It features high wear resistance, high temperature resistance and anti-scouring performance, completely different from soft rubber sealing gate valves.
5. Number 16: Nominal pressure PN16, namely 1.6MPa working pressure, which can run stably under conventional medium pressure of industrial pipelines.
6. Letter C: Valve body material WCB carbon steel cast steel. WCB carbon steel has outstanding mechanical strength and high-temperature resistance, which is the core reason why Z41H-16C gate valve adapts to steam, high-temperature oil and gas medium.
Combined interpretation: Z41H-16C Gate Valve is a flange connected rising stem wedge hard-seal gate valve with PN16 pressure grade and WCB carbon steel valve body. It is designed for high-temperature and non-corrosive industrial medium cut-off.
| Item | Specific Standard Parameter |
|---|---|
| Full Model | Z41H-16C Gate Valve |
| Nominal Pressure | PN16 (1.6 MPa) |
| Valve Body Material | WCB Carbon Steel |
| Sealing Material | Alloy Hard Seal (H) |
| Connection Type | Flange End |
| Structure | Rising Stem, Wedge Single Disc |
| Applicable Temperature | -29℃ ~ 425℃ |
| Applicable Media | Steam, fuel oil, compressed air, industrial water, non-corrosive gas |
| Driving Mode | Manual as standard; can be matched with electric, pneumatic actuators |
| Common Caliber Range | DN40~DN600 |
Thanks to the excellent comprehensive performance brought by WCB valve body and hard sealing structure, Z41H-16C gate valve occupies a dominant position in thermal power, petrochemical, central heating, metallurgy and industrial circulating water systems. Compared with cast iron gate valve, WCB material effectively avoids brittle fracture under high temperature and pressure; hard sealing structure solves the aging failure problem of soft sealing under long-term high-temperature scouring.
It should be noted that this type of gate valve is only suitable for fully open or fully closed working conditions. Long-term partial opening will cause severe erosion of the sealing surface by high-speed medium, leading to early sealing failure. Meanwhile, PN16 pressure grade cannot be used in pipelines with actual pressure exceeding 1.6MPa.
To sum up, mastering the coding rule of Z41H-16C gate valve helps purchasers quickly distinguish similar models such as Z41W-16P stainless steel gate valves and Z45H-16C non-rising stem gate valves. Reasonable selection based on pressure, temperature and medium characteristics can give full play to the service life and sealing stability of Z41H-16C gate valve in long-term pipeline operation.