Product Description
The single door check valve serves as a critical component for flow control professionals and system integrators requiring reliable backflow prevention in medium pressure systems up to PN16. Engineered to fit confined spaces, this valve from a trusted single plate check valve manufacturer is designed for industries such as chemical processing, water treatment, and HVAC where space constraints demand compact valve solutions. Its construction supports streamlined pipeline layouts, enabling maintenance teams and procurement specialists to optimize system uptime while adhering to international standards.
Featuring a robust single disc design, the single disc check valve incorporates a spring-assisted single door mechanism that minimizes pressure drop by fully opening the disc out of the flow path. This ensures high dynamic response and reduces energy consumption within systems handling water, oil, and air. Manufactured according to API 609 and ASME B16.34, it supports sizes from DN40 to DN600 with pressure ratings up to PN16 and temperature ranges from -25℃ to 180℃. Material options including ductile iron and stainless steel variants ensure chemical compatibility and durability tailored to demanding operational conditions.
Widely utilized across oil, metallurgy, chemical, and municipal water systems, the single plate check valve offers critical protection against reverse flow damage to pumps and compressors. This valve's short face-to-face dimension facilitates retrofitting projects and new installations where space economy and compliance with API and ASME standards are non-negotiable. Its use significantly reduces maintenance efforts and operational downtime in process pipelines, making it a cost-effective choice for engineers focused on long-term system integrity and energy efficiency.
Product Advantages：
1.Engineered with a simple and robust design featuring a single moving part—the disc.This inherent simplicity reduces potential failure points,
ensures dependable backflow prevention, and leads to a long, low-maintenance service life with minimal downtime.
2.When fully open, the single disc swings completely out of the flow path.This creates a full, unobstructed port that minimizes pressure drop
(head loss) across the valve, improving overall system efficiency and reducing energy consumption from pumps or compressor sets.
Standards and Certifications：
Design and Manufacture: API 609, ASME B16.34, ASME Section VIII
Flange Standards: ASME / ANSI: Class 125LB & 150LB; EN / DIN: PN6-16; BS / AS: BS 10 Table D/E, AS 2129 Table D/E; JIS: 5K,10K (JIS B2220)
Face-to-Face Dimension: API 609, ISO 5752, EN 558-1, ASME B16.10, MSS SP-68
Testing & Inspection Standards: API 598; EN 12266-1; ISO 5208; BS 6755-1
Certifications & Conformity: ISO 9001:2025; CE Marking (PED);
Specification of the Valve:
Type of Connection: Wafer
Size: DN40~DN600 (11/2~24 in)
Pressure: 0-16bar(0mpa~1.6Mpa)
Testing Pressure : Shell: 1.5 x Rated Pressure; Seat: 1.1 x Rated Pressure (acc. to API 598)
Medium:: Water/Oil/Air
Medium Temperature: -25~180℃
Material of the Valve:
Body: Ductile Iron, Carbon Steel (WCB, WCC), Low-Temp Carbon Steel (LCB, LCC, LC1)
Disc: Ductile Iron,SS304, SS316, Duplex 2205, Super Duplex 2507, Aluminum Bronze
Stem: Stainless Steel: SS420; SS304, SS316, 17-4PH (SS630); Duplex 2205, Super Duplex 2507
Seat: EPDM, HTEPDM, NBR (Buna-N), SIL (VMQ), FKM (VITON™), HYPALON™
Coating Epoxy: Resin 200um ~250um
Use Scenarios
In industrial facilities such as chemical plants and HVAC systems where space conservation is essential, the single door check valve proves indispensable. Its short face-to-face dimension allows straightforward installation in tight piping configurations, preserving valuable operational space. Serving as an effective backflow prevention device for water, oil, or air media under PN16 pressure class, the valve complies with international standards, ensuring system integrity and safety. Its robust design supports integration with automated control setups and facilitates routine maintenance, minimizing service interruptions in high-demand environments.
Within energy and process industries, safeguarding pumps and compressors from reverse flow is critical to preventing equipment damage and system failures. The single plate check valve from a reputable single plate check valve manufacturer plays a crucial role in these scenarios by providing reliable shutoff capabilities with minimal pressure loss. Its spring-assisted single disc mechanism ensures quick valve response under fluctuating pressures, contributing to operational efficiency and extended equipment lifespan. The valve’s compatibility with multiple body and seal materials makes it adaptable across diverse operational requirements, integrating seamlessly with process control and safety systems.
ABOUT US
Hebei Diefei Valve Co., Ltd., which was established in 1986,is a specialized factory gathering the medium and lower pressure valve developing, manufacturing and selling together. We established Crane Ningjin Valve Co., Ltd with Crane Valve USA in 1995.
Our main products are Butterfly valve, Check Valve, Gate Valve, Ball Valve, Valve Actuator and so on. These valves are available extensive to the pipelines of oil, metallurgy, chemical industry, medical, light textile, paper-making, water and electricity ,tap water company ,central air conditioning system etc.
We own perfect manufacturing process and testing way of casting, matching and assembling. We are authorized the Quality Management system certificate of ISO9001:2015, Environmental Management system certificate of ISO14001:2004,CE Certificate and the Approval of Manufacturer Certificate of DNV. Our company products are mainly sold to many large-scale agglomerations like CNPC, Sinoepc, CSPC, DAIKIN , Haier, Midea and etc. And exported to USA, Europe, Africa, Southeast Asia, Taiwan etc countries and area.
We are willing to serve our customers at home and abroad with our excellent products and services.
CERTIFICATE OF NSF61/372
PACKAING AND TRANSPORTATION
