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Check Valve
Home >> Products >> Check Valve >> Forged Steel Pressure-seal Check Valve
Designed for high-pressure and high-temperature piping systems, the Forged Steel Pressure-seal Check Valve provides automatic protection against reverse flow while maintaining secure pressure containment under demanding operating conditions. Its forged steel pressure boundary offers high strength and resistance to thermal and mechanical stresses, while the pressure-seal bonnet uses internal line pressure to reinforce the body-to-bonnet seal as operating pressure increases.
The Forged Steel Pressure-seal Check Valve is particularly suited to power generation, steam systems, oil & gas, petrochemical, and other high-energy process applications. Its compact forged construction, pressure-assisted sealing, and low-maintenance automatic operation make it a dependable solution for boiler, feedwater, superheated steam, and high-pressure process lines.
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Product description: |
Forged Steel Pressure-seal check valve |
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Model: |
H44H/Y Forged Steel Pressure-seal check valve |
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Nominal diameter: |
NPS 1/2"~2" |
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Operating temperature: |
-196℃～593℃(the range of service temperature may vary for different materials) |
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Operating pressure: |
Class900Lb~2500Lb |
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Material: |
A105、F5、F9、F11、F22、F304、F316 |
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Design standard: |
API 602、ASME B16.34、BS 5352 |
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Structural length: |
ASME B16.10、EN 558 |
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Connecting end: |
ASME B16.5 |
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Test standard: |
API 598 |
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Operation method: |
The valve clack can be automatically opened and closed with the medium force, movement weight can be increased to facilitate fast closing of valve clack, hydraulic cylinder can be increased to facilitate slow closing of valve clack to prevent vibration of pipeline, and pigging can be performed through manual opening and locking the valve clack at the opening position. |
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Application fields: |
For application in fields such as electric power industry, petroleum refining, petrochemical engineering, offshore oil, tap water engineering in urban construction, chemical engineering, etc. |
Protects piping systems by automatically preventing backflow and maintaining process integrity.
Forged Steel Construction
Provides high material strength, structural integrity, and resistance to pressure and thermal cycling.
Pressure-Seal Bonnet
System pressure energizes the bonnet seal, strengthening containment as internal pressure increases.
Automatic Backflow Prevention
The valve responds directly to flow direction and closes automatically when reverse flow occurs.
Compact Forged Design
Forged construction allows a strong and compact pressure boundary, making the valve suitable for high-pressure piping systems.
Low Flow Resistance
Optimized internal passages help maintain efficient flow and reduce unnecessary pressure loss.
High-Temperature Service
Suitable for steam and other elevated-temperature media with appropriate material and trim selection.
Excellent Pressure Containment
The forged body and pressure-seal arrangement provide enhanced resistance to high internal pressure and thermal stresses.
Reduced Leakage Potential
Pressure-assisted sealing minimizes dependence on conventional bonnet gaskets and helps maintain pressure-boundary integrity.
Low Maintenance Operation
Self-acting check operation eliminates the need for external actuators, control systems, or power supplies.
Suitable for High-Energy Applications
Ideal for boiler feedwater, main and auxiliary steam, turbine systems, power plant piping, and other high-pressure process services.
Chemical Industry
Ball valves, butterfly valves, gate valves, globe valves, check valves, and control valves ensure safe fluid isolation, precise process control, and reliable operation in demanding chemical processing applications.
Oil Industry
Engineered for reliable isolation, flow regulation, and backflow prevention, our valve solutions support upstream, midstream, and downstream oil production and refining operations.
Natural Gas
Providing leak-tight sealing, dependable flow control, and safe pipeline operation for natural gas transmission, storage, LNG, and distribution systems.
Metallurgy
Built to withstand high temperatures, abrasive media, and harsh operating conditions in steelmaking, smelting, and metallurgical processing.
Power Generation
Ensuring reliable isolation, accurate flow control, and long-term performance in steam, boiler, turbine, and power plant systems.
Pharmaceutical
Delivering hygienic, precise, and contamination-free flow control for pharmaceutical manufacturing and clean process applications.
Steel Industry
Designed for high-temperature, high-pressure, and severe-service conditions in iron making, steelmaking, rolling mills, and auxiliary process systems.
New Energy
Supporting hydrogen, LNG, carbon capture, battery materials, and renewable energy projects with advanced valve solutions for safe and efficient process control.
-196°C Cryogenic Liquid Nitrogen Test System
Simulates ultra-low-temperature operating conditions to verify valve sealing performance and reliability for cryogenic applications.
Brinell, Rockwell & Vickers Hardness Tester
Ensures material hardness meets international standards for strength, durability, and long-term performance.
Large-Scale Coordinate Measuring Machine (CMM)
Provides high-precision dimensional inspection to ensure machining accuracy and product consistency.
Valve Life Cycle Testing System
Evaluates valve durability and operational reliability through repeated opening and closing cycle tests.
High & Low Temperature Test Chamber
Verifies valve performance and stability under extreme temperature conditions.
High Temperature Aging Test Chamber
Assesses long-term material stability and product reliability under continuous high-temperature exposure.
Desktop SPECTRO Optical Emission Spectrometer (Germany)
Performs rapid and accurate material composition analysis to ensure full material traceability and compliance.
Our engineering team evaluates these factors to ensure long-term reliability and regulatory compliance.
ISO9001:2015
ISO9001:2015
Environmental Management System Certification
Occupational Health & Safety Management System Certification
Certificate of Quality System Approval
ScheduleTo Certificate No HPiVS-iP1001-062-Q-10-00
CEPTUфNKAT COOTBETCTBNа
EAC
Certificate of Authority to use the Official APl Monogram
Certificate of Authority to use the Official APl Monogram
Certificate of Authority to use the Official APl Monogram
Certificate of Authority to use the Official APl Monogram
Certificate of Authority to use the Official APl Monogram
ISO 15848－1 QUALIFICATION CERTIFICATE
Test Report
Check valves automatically prevent reverse flow, protecting pumps, compressors, pipelines, and other equipment.
The valve opens automatically when fluid flows in the correct direction and closes when flow reverses, preventing backflow.
Swing check valves are suitable for general service, dual plate valves are compact and lightweight, while axial flow valves minimize pressure loss and reduce water hammer.
Q How do I choose the right check valve?
Selection depends on flow conditions, pressure, temperature, installation orientation, and the type of process media.
Q Can check valves reduce water hammer?
Yes. Dual plate and axial flow check valves are specifically designed to reduce water hammer through faster closing action.
Q Which industries commonly use check valves?
Check valves are widely used in oil & gas, water treatment, chemical processing, power generation, HVAC, and marine industries.
Hangzhou Kaiwei Valve Group Co, Ltd, established in 2015, is a cutting-edgeindustrial enterprise that specializes in the R&D, design, casting, production,and sales of fluid control products and services
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