90mm PE100 Butt Fusion Rising Stem Steel Core Stop Valve for Pipeline

Product Description

Product Description

Heavy-Duty PE100 Rising Stem Shut-Off Valve with Steel Core Reinforcement

Zhejiang Fengfeng industry's Heavy-Duty PE100 Rising Stem Shut-Off Valve with Steel Core Reinforcement is a high-performance flow control valve designed for HDPE pipeline systems used in water supply, irrigation, industrial processing, mining, and infrastructure projects. Manufactured from premium PE100 material and reinforced with a robust steel core structure, the valve combines outstanding corrosion resistance with superior mechanical strength, ensuring reliable operation under demanding working conditions.

The rising stem design provides clear visual indication of the valve position and allows smooth, precise opening and closing operations. The reinforced steel core enhances structural stability and pressure-bearing capacity, while the PE100 body offers excellent resistance to corrosion, chemicals, abrasion, and environmental stress cracking. This combination significantly extends service life and minimizes maintenance requirements.

Equipped with butt fusion ends, the valve can be directly welded to HDPE pipelines, creating a homogeneous and leak-free connection that is as strong as the pipe itself. The full-bore flow path reduces pressure loss and improves system efficiency, making it ideal for large-scale water transmission and distribution networks.

Designed for long-term underground and above-ground installations, the valve delivers dependable shut-off performance, excellent durability, and reliable sealing even in harsh environments. It is widely used in municipal water supply systems, agricultural irrigation networks, industrial pipelines, mining operations, water treatment facilities, and utility infrastructure projects.

Application

Municipal Water Supply Systems
Widely used in urban water distribution networks to control and isolate water flow. The valve provides reliable shut-off performance, leak-free operation, and long service life for municipal infrastructure projects.

Agricultural Irrigation Networks
Ideal for irrigation pipelines, pumping stations, and water distribution systems. Its corrosion-resistant PE100 construction ensures dependable operation in outdoor environments and demanding agricultural conditions.

Industrial Pipeline Systems
Suitable for factories, processing plants, cooling water systems, and utility pipelines. The reinforced steel core structure offers excellent mechanical strength and stable performance under continuous operation.

Mining and Water Transfer Projects
Used in mining operations, slurry transportation systems, and large-scale water conveyance pipelines. The heavy-duty design withstands pressure fluctuations, harsh environments, and demanding working conditions.

Water Treatment Facilities
Installed in water treatment plants and distribution stations for flow control, system isolation, and maintenance operations. The durable sealing system helps ensure safe and efficient pipeline management.

Underground HDPE Pipeline Networks
The butt fusion connection creates a fully welded and leak-free joint, making the valve particularly suitable for buried pipeline installations where long-term reliability is essential.

Product Parameters

TECHNICAL PARAMETERS
Product Name	PE100 Butt Fusion Steel Core Isolation Valve
Product Category	Industrial Flow Control Equipment
Primary Function	Opens, Closes, Or Partially Obstructs Fluid Passageways To Control Flow Rate, Pressure, And Direction In Piping Systems
Main Applications	Pipeline Isolation, Flow Regulation, Pressure Control, Backflow Prevention, System Shutdown, And Process Automation In Industrial Facilities
Operating Temperature	-20°C to +60°C
Ambient Temperature	Suitable For Outdoor Or Indoor Use
Suitable Fluids	Water, Steam, Oil, Gas, Acids, Alkalis, Solvents, Slurries, Cryogenic Liquids
Installation Orientation	Horizontal Preferred, Vertical Acceptable

Detailed Photos

PRECISE FLOW CONTROL & REGULATION 

RELIABLE SEALING & LEAK PREVENTION 

Enables accurate adjustment of fluid flow rates, pressures, and directions to maintain optimal system performance and process parameters

Advanced sealing technologies and tight shut-off capabilities prevent leakage, ensuring safety compliance and minimizing product loss in critical applications

ROBUST CONSTRUCTION & MATERIAL SELECTION 

BIDIRECTIONAL OR UNIDIRECTIONAL FLOW MANAGEMENT 

Manufactured from corrosion-resistant materials including stainless steel, brass, cast iron, and specialized alloys to withstand harsh operating conditions and aggressive media

Designed to control flow in specific directions, with check valves preventing backflow and isolation valves providing complete system segmentation

FAQ

1. Why choose us?
Factory Direct Pricing, Large Stock,Quality
(1).Manufactuer: Fittings from 20mm to 1400mm, rated for PN10 to PN25.
(2).custom branding & products, backed by three plants and .
(3).large inventory
(4).Competitive pricing with strict, in-house quality control.
(5).We rapidly source and consolidate all related piping products.
 
2.What is common Uses of  HDPE/PE/PPR/PERT II pipe & fittings?
Zhejiang Fengfeng Pipe Industry's HDPE/PE/PPR/PERT II pipe & fittings are commonly used in construction materials to household products and agricultural applications. Their strength, durability, and versatility make them invaluable across various industries. Especially in urban and rural drinking water projects,sewage and wastewater systems,domestic and industrial wastewater pipelines,drainage and storm-water management systems,underground firewater pipelines,infrastructure projects,airports, ports, railways, and highway drainage projects,sports venues and landscape irrigation systems,geothermal heating and cooling systems,water piping for solar farms and wind farms,residential, commercial, and municipal water distribution networks,agricultural irrigation and greenhouse watering systems,gas distribution networks,low-pressure and medium-pressure natural gas pipelines,industrial piping systems,chemical processing plants requiring corrosion-resistant piping,mining operations for slurry and water transport,power plants and cooling systems.
 
3.What is the key Benefits of Electrofusion Fitting?
Zhejiang Fengfeng Pipe Industry's electrofusion fittings achieve a zero-leakage, permanent joint through a meticulously controlled scientific process that creates a homogeneous, monolithic molecular bond between the fitting and the pipe. It is not merely a mechanical seal, but a fusion of materials into a single entity.
 
Here is a detailed, step-by-step breakdown of the process and the underlying principles that guarantee a leak-proof connection:

(1).Core Principle: Molecular Diffusion & Interfusion:
The foundation is thermal fusion. The HDPE or PPR material, when heated to a specific melt temperature (~200-220°C), transitions from a solid to a viscous, molten state where the long polymer chains become mobile. Under controlled pressure, these chains from the fitting and the pipe interdiffuse and entangle across the interface. Upon cooling, they recrystallize together, forming a single, continuous material mass with no distinct boundary or seam.

(2).Step-by-Step Process to Ensure Zero Leakage

(3).The Role of "Smart" Technology in Guaranteeing Integrity:
Modern electrofusion transcends simple heating. The fitting itself contains critical data that, when read by an intelligent welding unit, ensures the process itself is leak-proof:
Barcode/Data Matrix: Stores exact welding parameters (voltage, time, cool time) tailored for that specific fitting size and material batch.
Automatic Process Control: The welder reads the code and executes the cycle automatically, eliminating human error in setting time or voltage.
Real-Time Monitoring & Rejection: The welder monitors resistance, temperature, and energy input in real-time. If any parameter deviates from the strict window, it aborts the cycle and signals a failure, preventing a defective joint from being accepted.
Data Logging: A digital record (date, time, location, parameters) is created for each joint, providing traceability and proof of a correct, leak-proof installation.

(4).Comparison: Why Mechanical Fittings Can Leak:This highlights why electrofusion is fundamentally superior for permanent, leak-free performance:Feature Electrofusion Joint.Mechanical/Gasketed Joint.Sealing Mechanism Homogeneous molecular bond (the pipe and fitting become one). Compression of an elastomeric seal (gasket/O-ring) against the pipe surface.Inherent Weakness None, if procedure is followed correctly. Seal aging, hardening, and creep over time. Sensitivity to vibration and thermal cycling causing bolts to loosen.Long-Term Performance Static or improves as crystallization completes. Lifetime equal to the pipe (50+ years). Degrades over time. Requires periodic re-torquing and eventual seal replacement.

Conclusion: The Guarantee of Zero Leakage
Zhejiang Fengfeng Pipe Industry's electrofusion joint is leak-proof because it eliminates the interface where leakage could occur. It is not a "seal" but a complete elimination of the seam. The combination of material science (molecular fusion), precision engineering (embedded coil & bead), and process intelligence (automated welding with data traceability) creates a joint whose integrity is intrinsic, permanent, and verifiable. This is why it is the mandated method for leak-sensitive applications like gas distribution, potable water mains, and chemical pipelines.

4.What is the Step of Process Purpose & Anti-Leak Mechanism?
Step 1: Surface Preparation Pipe end is scraped to remove the oxidized surface layer, ensuring clean, virgin material is exposed. Removes contamination that would act as a barrier to molecular diffusion, preventing weak bonds.

Step 2: Clamping & Alignment:
Pipe and fitting are securely clamped in a straight, aligned position with a precise gap.Eliminates stress and misalignment that could cause voids or thin spots in the fused joint.

Step 3: Initiation & Heating:
Voltage is applied to the integrated resistance wire coil embedded in the fitting. The coil heats uniformly, transferring heat conductively to melt both the fitting's inner surface and the pipe's outer surface. Creates a precise, uniform melt zone. The controlled, even heating is critical—cold spots would lead to incomplete fusion and potential leak paths.

Step 4: Melting & Interfusion:
The molten material from both parts merges. Internal pressure from the thermal expansion of the pipe and the designated fusion bead inside the fitting ensures intimate contact and forces the materials to intermix.The fusion bead melts to fill the gap completely, providing additional material to compensate for any surface irregularities, guaranteeing no voids.

Step 5: Controlled Cooling:
Power is cut. The joint cools naturally and uniformly under maintained restraint. The polymer chains solidify slowly, locking their entangled structure in place.Prevents internal stress cracks (caused by rapid quenching). A stress-free joint maintains integrity under cyclic pressure and temperature changes.

5.What is HDPE?
High-Density Polyethylene (HDPE) is a thermoplastic polymer made from petroleum. It is known for its high strength-to-density ratio, which means it is strong yet lightweight. HDPE is a versatile plastic that has been around since the 1950s and has grown in popularity due to its durability, resistance to impact, and ability to withstand various environmental conditions.
The use of brand-new, virgin HDPE raw materials from traceable sources is not merely a procurement choice; it is the fundamental engineering decision that determines the ultimate performance, safety, and commercial value of pipe fittings. For Zhejiang Fengfeng Pipe Industry, specifying prime resins from leading producers like SHANGHAI JINFEI PETROCHEMICAL and ZHEJIANG PETROLEUM & CHEMICAL (grades: BH 1064, TR480AT 1768, 23050 HDPE 2125366, 07111) delivers critical, measurable benefits.

(1).Guarantee of Core Performance & Long-Term Integrity
Role of Virgin Material Risk of Using Recycled/Off-Spec Material.Long-Term Hydrostatic Strength (LTHS).Ensures the fittings reliably meet PE100/PE100RC classification, capable of withstanding rated pressure (e.g., PN16, PN25) for a 50+ year service life.Dramatic loss of strength, failure to pass type tests, high risk of Slow Crack Growth (SCG) leading to premature, sudden pipe bursts.

(2).Environmental Stress Crack Resistance (ESCR).An intact polymer structure provides superior resistance to chemicals and installation stresses, extending lifespan in harsh soils and environments.Catastrophically low ESCR, making fittings the weak link where cracks initiate under stress, causing system failure.

(3).Consistent Electrofusion Quality Stable Melt Flow Rate (MFR) and melting point ensure uniform heating, inter-diffusion, and cooling during electrofusion, creating a perfect molecular bond. Variable composition and contaminants cause uneven heating, poor fusion, and cold joints—the direct cause of leaks.

(4).Dimensional Stability & Low-Temperature Toughness Predictable shrinkage for precise molding; maintains excellent impact resistance even at -20°C, preventing brittle fracture.High warpage, poor tolerances, and high low-temperature brittleness, leading to cracks during handling, installation, or freeze-thaw cycles.

2. Critical Value for Projects & Business:
(1).Risk Mitigation & Safety Assurance:
Role: In gas, potable water, or chemical pipelines, a single faulty fitting can cause catastrophic failure. Virgin material is the primary and most critical barrier against such systemic risks.
Value: Protects brand reputation and avoids astronomical costs from liability claims, project failures, and environmental damage.

(2).Passport to International Certification & Markets:
Role: All high-end certifications (CE, ISO, WRAS) require full traceability and certified performance data of the raw material. Only virgin resin can provide this.
Value: It is a non-negotiable prerequisite for entering regulated markets like the EU, Middle East, and North America.

(3)..Lowest Total Cost of Ownership:
Role: While the initial unit cost is higher, it guarantees a maintenance-free, zero-replacement system for over 50 years.
Value: For project owners and operators, this dramatically reduces lifetime costs. The expense of a single repair (especially excavation) far outweighs the minor price difference in fittings.

(4).Foundation for Credible Quality Commitment:
Role: Traceability to renowned petrochemical producers serves as a powerful quality guarantee.
Value: In communications with engineers, contractors, and tender boards, this is the most compelling technical proof, significantly building trust and justifying a premium.
 
Conclusion: The Strategic Message
Emphasizing the use of traceable, virgin raw materials communicates a powerful strategic message to clients, especially international buyers:
Zhejiang Fengfeng Pipe Industry's reliability is engineered at the molecular level. We invest in higher material costs to safeguard your projects against decades of operational risk and potential catastrophic cost. This is not just a fitting—it's a 50-year performance warranty."
This shifts the competitive narrative from price to value, responsibility, and risk management, establishing Zhejiang Fengfeng Pipe Industry as a provider of critical infrastructure solutions, not just commodities.