Selecting the right valve for your piping system requires a clear understanding of two fundamental categories: service characteristics and structural characteristics. This concise guide explains each, helping engineers and buyers make informed decisions.The main gate valves product names of China gate Valve Network include: Bellows Wedge Gate Valve,High Temperature & pressure Power Station Gate Valve,Inside Screw Non-rising Stem Wedge Gate Valve,Insulation Jacket Gate Valve,Lined Gate Valve,MZ44W Rising Stem Gas Quick Open&close ParallelMZ48W Manual Non-rising Stem City Gas Quick Gate Valve,Manual Knife-shaped Gate Valve,Manual Slurry ValveManual Wedge Copper Gate Valve

1. Service Characteristics: Performance & Application
Service characteristics define how a valve operates and where it can be used:

• Valve Category (Function): Includes shut-off valves (isolation), regulating valves (flow/pressure control), safety valves (overpressure protection), etc.

• Valve Type (Design): Common types like gate, globe, butterfly, and ball valves—each suited for specific piping layouts and fluids.

• Material of Key Components: Body, bonnet, stem, disc, and seating surfaces (e.g., cast steel, stainless steel, alloys) determine corrosion, temperature, and pressure resistance.

• Actuation Method: Manual, electric, pneumatic, or hydraulic operation affects convenience and automation.

2. Structural Characteristics: Installation & Maintenance
Structural characteristics influence how a valve fits into a system and how it can be serviced:

• Face-to-Face / Overall Height: Critical dimensions for piping design and space clearance.

• Connection Type: Flanged, threaded, welded, or clamped ends—impacting sealing reliability and ease of removal.

• Seat Design: Inserted rings, hardfacing, or machined seats affect leak tightness and wear life.

• Stem Design: Rising or non-rising stems influence operating torque and visual indication.

By evaluating both service and structural characteristics, you can ensure optimal valve selection for long-term system reliability and maintenance efficiency.

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