Heavy Duty Signal Gate Valve for Fire Protection Systems

• Overview
• Product Description
• Technical Parameter
• Main Products
• Company Profile
• Certifications
• FAQ

Overview

Basic Info.

Model NO.	ZSZF8-11
Media	Gas, Oil, Water, Acid
Standard	Standard
Connection Mode	Flange
Power	Hydraulic
Material	Alloy
Type	Electric Resilient Seated
Product Name	Motorized Flanged Gate Valve
Model	Zf-Dynamic Series
Valve Type	Automatic Flow Control Valve
Function	Automatic Flow Balancing & Regulation
Nominal Diameter	DN15- DN600
Nominal Pressure	Pn16 / Pn25
Flow Accuracy	±5%
Working Temperature	0℃ ~ 150℃
Control Range	Adjustable Flow Rate
Valve Body	Ductile Iron / Cast Steel / Stainless Steel
Internal Components	Stainless Steel (SS304/SS316)
Spring Material	Stainless Steel
Application	HVAC, Heating & Cooling Systems
Advantages-01	Boost Efficiency, Cut Energy Costs
Advantages-02	Auto Flow Balancing, No Manual Adjustment
Transport Package	Seaworthy Wooden Case
Specification	DN50-DN150(Customizable according to needs)
Trademark	Zentif
Origin	China
HS Code	8421199090
Production Capacity	500000

Packaging & Delivery

Package Size20.00cm * 30.00cm * 40.00cm Package Gross Weight50.000kg Lead Time 15 days (1 - 1 Pieces)
To be negotiated ( > 1 Pieces)

Product Description

Product DescriptionHigh-Performance Industrial Gate Valves ManufacturerISO-Certified Resilient Seated Gate Valves for Water Supply, HVAC, Fire Protection and Industrial Systems

Key FeaturesResilient rubber-coated wedge provides excellent sealing performance and zero leakage
100% pressure and leakage tested before shipment according to international standards
Low operating torque for smooth and easy manual operation
Strong ductile iron body with superior corrosion resistance
Compact design with short face-to-face length, easy to install and maintain
Suitable for both above-ground and buried pipeline applicationsWorking Principle
The valve controls fluid flow by raising or lowering the wedge gate through the rotating stem. When the handwheel is turned, the stem drives the gate to move vertically. In the fully open position, the gate is completely lifted out of the flow path to minimize resistance; when closed, the resilient wedge tightly contacts the seat to achieve complete shutoff. This simple and reliable mechanism ensures stable on/off control in various pipeline systems.Applications

Municipal water supply and drainage networks
HVAC chilled and hot water circulation systems
Industrial fire protection and pump stations
High-rise building water supply pipelines
Advatages
Every valve is fully pressure tested on both shell and seat before delivery to guarantee safety and reliabilityResilient seated design delivers bubble-tight shutoff with zero leakage under rated pressureRobust ductile iron construction offers excellent strength and long service lifeLow flow resistance when fully open helps reduce energy consumptionHigh corrosion resistance makes it ideal for clean water, sewage and industrial fluid applicationsSimple structure and modular design allow for easy on-site maintenance and repairTechnical Parameter

Product Category	Nominal Size (DN)	Pressure Rating	Body Material	Control / Actuation
Differential Pressure Valve	DN50 - DN600	PN16 / PN25	Ductile Iron GGG50	Self-Operated (Pilot)
Dynamic Balancing Valve	DN50 - DN300	PN16	Cast Steel / DI	Electric (0-10V/4-20mA)
Pump Control Valve	DN50 - DN1000	PN10 / PN16	Ductile Iron / WCB	Hydraulic / Diaphragm
SS Pressure Reducer	DN15 - DN200	Max PN40	SS304 / SS316	Direct Acting / Spring
Water Hydraulic Valve	DN50 - DN1200	PN16 / Class 150	GGG50 / Epoxy Coated	Remote Floating / Manual
Electric Two-Way Valve	DN25 - DN200	PN16	Bronze / Cast Iron	Proportional Integral
We offer customized flange standards and material options (Ductile Iron / Cast Steel / Stainless Steel) to meet project-specific requirements in different regions. OEM/ODM customization and technical drawing (PDF/CAD) requests are available.

Main Products

Company Profile

Certifications CE/EAC/ /FM/WRAS/SIL/PED

FAQ Q1: How to choose the right gate valve for water supply and industrial pipelines? A: For municipal water supply, fire protection, and industrial systems, resilient seated gate valves or metal seated gate valves are recommended. These valves provide full bore flow with extremely low pressure drop. It is important to select the appropriate pressure rating (PN10/PN16) and material (ductile iron or cast steel) based on the working conditions to ensure long-term reliability and tight shutoff.Q2: What makes gate valves suitable for fire protection and pump station applications? A: Gate valves are ideal for fire protection systems and pump stations because they offer minimal flow resistance when fully open and excellent sealing performance when closed. Their robust construction can withstand high pressure surges, making them a preferred choice for main pipelines where reliable on/off control is critical for safety and system performance.Q3: How do gate valves perform in high-frequency operation and automation systems?A: Traditional gate valves are designed primarily for infrequent on/off operation rather than frequent cycling. For applications requiring frequent operation, it is recommended to choose high-quality resilient seated gate valves with gear operators or pair them with electric actuators. Proper maintenance of the stem and sealing surfaces can significantly extend service life even in demanding conditions.Q4: What are the advantages of using gate valves in HVAC and chilled water systems?A: Gate valves are widely used in HVAC and chilled water systems due to their excellent sealing capability and very low pressure loss when fully open. They provide reliable isolation for maintenance and repair work. Their durable design and bubble-tight shutoff help maintain system efficiency while effectively preventing internal leakage in heating and cooling circuits.