Z40H美标法兰闸阀特点：

       ①产品设计制造符合美国国家标准ANSIB16.34，美国石油学会标准AP16D和API600要求。
       ②结构紧凑、体积小、刚性好、密封安全稳定。
       ③关闭件（闸板）采用弹性结构，在工作中能自动补偿由于异常负荷或温度引起的阀体变形。因此，密封稳定，并且不会产生闸板楔柱。
       ④公称通径大于等于NPS1011，压力级400磅级和公称通径大于等于NPSS611、压力级600～2500磅级的手动阀门，其操做装置中配有滚动轴承，启闭轻松。
       ⑤主体材料、内件材料、填料、垫片、紧固件的材料可根据用户要求或实际工况条件合理组合。
       ⑥阀座可为更掀式阀座，可任意组合与关闭密封面材质配对，以满足工况要求，延长使用寿命。

Z40H美标法兰闸阀标准：

Z40H美标法兰闸阀

Z40H美标法兰闸阀产品型号 Z40H 连接方式 法兰连接

Z40H美标法兰闸阀驱动方式 主要为手动（也可采用齿轮传动、电动、气动）

公称通径 DN15 ~ DN1000  (另有信息显示为DN15-800mm )

压力等级 ANSI Class 150Lb ~ 2500Lb

阀体材质 碳钢（WCB）、不锈钢（如CF8/304, CF8M/316）等

适用温度 碳钢: -29℃ ~ 425℃；不锈钢: -40℃ ~ 500℃

Z40H美标法兰闸阀适用介质 水、蒸汽、油品、硝酸、醋酸、强氧化性介质及尿素等

Z40H美标法兰闸阀产品主要特点

Z40H闸阀在设计上具有一些明显优点，以满足严苛的工业应用需求：

· Z40H美标法兰闸阀稳定的密封性能：阀座密封面通常采用硬质合金或不锈钢堆焊工艺，经久耐用。关闭件（闸板）采用弹性结构，能自动补偿因异常负荷或温度变化引起的阀体变形，确保密封稳定，并防止闸板卡住。

· Z40H美标法兰闸阀操作轻便灵活：对于中大口径的阀门，其操作装置中常配备滚动轴承，使得启闭过程更为省力轻便。

· Z40H美标法兰闸阀符合标准：产品的设计、制造和检验遵循美国石油学会（API）和美国国家标准学会（ANSI）的一系列标准，确保了产品的通用性和稳定性。主要标准包括：

  · 设计与制造：API 600

  · 结构长度：ANSI B16.10

  · 法兰尺寸：ANSI B16.5

  · 压力-温度等级：ANSI B16.34

  · 检验与试验：API 598

· Z40H美标法兰闸阀灵活的材质配置：阀体、内件、填料及垫片等可根据用户要求或实际工况条件进行合理组合选配，以适应不同的介质和压力温度条件。

主要应用领域

得益于其稳定的性能，Z40H闸阀被广泛应用于以下行业：

· 石油化工

· 火力发电厂

· 采矿、造纸、制药、食品设备

· 给排水设备、市政阀门

· 液化气设备、天然气

选型与使用注意事项

Z40H美标法兰闸阀在选型和使用该阀门时，有几点需要特别留意：

1. 选型依据：在选择阀门时，需要明确公称通径、压力等级、使用温度、介质类型以及阀体材质等关键参数。

2. 维修便捷性：部分型号的阀座设计为可更换式，便于在密封面磨损后进行维修或更换，延长阀门使用寿命。

3. Z40H美标法兰闸阀压力试验：阀门出厂前会经过严格的压力测试，包括强度试验、水密封试验和气密封试验，以确保其承压能力和密封性能。例如，150Lb压力等级的阀门，其强度试验压力一般为3.1 MPa。

总结

总的来说，Z40H美标法兰闸阀是一款结构紧凑、密封稳定、操作灵活且符合标准的工业阀门。它的弹性闸板设计和多样的材质选择使其能够适应复杂的工况，是在严苛工业环境下实现稳定流体控制的常见选择。

This Z40H American Standard Flanged Gate Valve is a manually operated valve designed according to American standards. It is primarily used for isolating connecting the medium within a pipeline finds widespread application across various industrial sectors including petroleum, chemical, power.

Product Overview & Technical Parameters

The table below summarizes the core information for the Z40H American Standard Flanged Gate Valve:

Item Description

Product Model Z40H

Connection Type Flanged

Actuation Method Primarily manual (Gear, Electric, Pneumatic actuation also available)

Nominal Diameter DN15 ~ DN1000 (Other information suggests DN15-800mm)

Pressure Class ANSI Class 150Lb ~ 2500Lb

Body Material Carbon Steel (WCB), Stainless Steel (e.g., CF8/304, CF8M/316), etc.

Applicable Temperature Carbon Steel: -29℃ ~ 425℃; Stainless Steel: -40℃ ~ 500℃

Applicable Media Water, Steam, Oil, Nitric Acid, Acetic Acid, Strong Oxidizing Media, Urea, etc.

Main Product Features

The Z40H Gate Valve boasts several significant design advantages to meet demanding industrial applications:

· Reliable Sealing Performance: The seat sealing surface typically utilizes hard alloy stainless steel overlay welding, ensuring durability. The closing member (gate) often features a flexible structure that automatically compensates for body deformation caused by abnormal load temperature changes, ensuring reliable sealing preventing gate jamming.

· Smooth Flexible Operation: For medium large diameter valves, the operating mechanism is often equipped with roller bearings, making the opening closing process smoother less labor-intensive.

· Compliant with International Standards: The product design, manufacturing, testing adhere to a range of American Petroleum Institute (API) American National Standards Institute (ANSI) standards, ensuring interoperability reliability. Key standards include:

  · Design & Manufacturing: API 600

  · Face-to-Face Dimensions: ANSI B16.10

  · Flange Dimensions: ANSI B16.5

  · Pressure-Temperature Ratings: ANSI B16.34

  · Inspection & Testing: API 598

· Flexible Material Configuration: Body, internals, packing, gaskets can be reasonably selected combined according to user requirements actual service conditions to adapt to different media pressure-temperature conditions.

Main Application Fields

Thanks to its reliable performance, the Z40H Gate Valve is widely used in the following industries:

· Petrochemical Industry

· Thermal Power Plants

· Mining, Papermaking, Pharmaceutical, Food Equipment

· Water Supply Drainage Equipment, Municipal Valves

· Liquefied Gas Equipment, Natural Gas

Selection Usage Notes

There are several key points to pay special attention to when selecting using this valve:

1. Selection Basis: When selecting a valve, key parameters such as Nominal Diameter, Pressure Class, Service Temperature, Media Type, Body Material must be defined.

2. Ease of Maintenance: The seats in some models are designed to be replaceable, facilitating maintenance replacement after the sealing surface wears out, thereby extending the valve's service life.

3. Pressure Testing: Valves undergo strict pressure tests before leaving the factory, including Shell Test, Seat Seal Test (Hydrostatic), Seat Seal Test (Pneumatic), to ensure pressure-bearing capacity sealing performance. For example, the shell test pressure for a Class 150Lb valve is generally 3.1 MPa.

Summary

In summary, the Z40H American Standard Flanged Gate Valve is an industrial valve characterized by its compact structure, reliable sealing, flexible operation, compliance with international standards. Its flexible wedge design diverse material options enable it to adapt to complex service conditions, making it a common choice for reliable fluid control in demanding industrial environments.