Material Certification: Full MTC provided with PMI verification to ensure material authenticity
Heavy-duty Construction:Valve walls meet or exceed international standards (e.g., ASME B31.3), ensuring strength and safety in high-pressure and corrosive conditions.
Low-turbulence Flow Path: Minimizes erosion points, extending valve life and reducing maintenance needs
Leak-proof Sealing: Special seals (FKM, EPDM, PTFE, or metal) ensure no leaks even under high pressure
Design and Manufacture: ASME B16.34; ASME VIII; API 609:AS2129: JISB2220
Side Flange Standards: ANSI 125LB/150LB; ASME; AS-D/E; BS PN10/16; DIN PN10/16; EN PN6/10/16/25; GB PN6/10/16; GOST; HG/T PN6/10/16/25; JIS 5K/10K/16K
Face-to-Face Dimension: ISO 5752; MSS SP-68; ASME B16.10; EN 588-1
Testing Standards: API 598; EN 12266-1; ISO 5208
Certifications: ISO 9001; CE; BV; API 609; API 598; EAC; SIL3；
Technical description
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Q&A
Specification of the Valve |
|
|---|---|
| Type of Connection | Wafer |
| Size |
DN32~DN1200 (1 1/4~48in) |
| Pressure |
0bar~18bar (0mpa~1.8mpa) |
| Testing Pressure | 256psi |
| Medium | Water/Oil/Air |
| Medium Temperature | -25~180℃ |
Material of the Valve |
|
|---|---|
| Body | CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/1.4406 |
| Disc | DI/ CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/ HC276/ C95400/ C95800 |
| Stem | 45#/ SS410/ SS416/ SS420/ SS304/ SS316/ SS316L/ 17-4/ 2205/ 2507/ 1.4529/ K500/ CF8/ CF8M/ HC276 |
| Seat | EPDM/ NBR/ SI/ FKM/ FPM/ VITON/ PTFE |
The following are the representative application industries of this valve. Since butterfly valves can be applied to almost all industries (as long as the temperature and pressure are in line), many industries have not been listed.
JRVAL high quality wafer check valves strictly adhere to API and NACE MR0175 standards, ensuring superior resistance to sour gas corrosion.
Our butterfly check valves cover a full range from DN32-DN1200. Featuring standard EPDM seats, they ensure over 50,000 reliable open/close cycles in clean water and light wastewater applications, with an ultra-low minimum opening pressure of just 0.02 bar.
Sanitary check valves comply with 3A and (partially) EHEDG standards. They guarantee minimal contamination with metal ion release <5ppb and TOC <10ppb. Each valve undergoes 100% air-tightness testing for zero leakage and comes with complete material certificates and surface roughness reports.
JRVAL quality wafer check valves offer specialized materials or liner designs. Our specific wear-resistant models boast over 50% longer service life than standard stainless steel check valves in slurries with 30% solids, and can withstand various strong acids like sulfuric and hydrochloric acid.
JRVAL economical wafer check valve dual plate are designed to integrate seamlessly with building automation systems. Their low flow resistance (high Cv value) ensures significant energy savings, making them ideal for HVAC and building applications.
JRVAL provides marine-grade stainless steel wafer check valve that comply with relevant standards and can be supplied with ship inspection certificates. Our specific Super Duplex Stainless Steel models (PREN>40) demonstrate exceptional resistance to pitting and crevice corrosion, even in seawater with chloride concentrations as high as 50,000ppm.
Q: A thick valve body seems beneficial, but will it significantly increase costs? |
A: A robust valve body is essential to ensure structural safety and durability in high-pressure and corrosive environments, complying with international design standards. While top-tier corrosion-resistant materials inherently carry higher costs, JRVAL leverages optimized design and efficient production to deliver competitive pricing without compromising quality. More importantly, high-quality valves prevent frequent replacements and accident-related losses, resulting in lower overall costs in the long term. |
Q: Our pipeline system incorporates multiple flange standards (GB, ANSI/ASME, etc.). Can you accommodate these? |
A: Yes. JRVAL’s butterfly check valves can be customized to your specific flange requirements, including GB (China), ANSI/ASME (USA), BS (UK), DIN (Germany), and JIS (Japan) standards. We ensure precise manufacturing for seamless integration with your pipeline system. |
Q: The refined appearance and clear casting markings – what benefits do these offer for our desalination plant? |
A: In highly corrosive environments, durable identifiers (material grade, pressure rating, heat number) are critical. They help ensure correct valve installation, simplify traceability and maintenance, and mitigate risks from misuse or unreadable labels. The refined finish also reflects meticulous craftsmanship and quality commitment. |
Q: What does the “10-year failure-free guarantee” cover? The entire valve or specific components? |
A: For key pressure-bearing components like valve bodies made of premium corrosion-resistant materials (e.g., super duplex steel), we guarantee corrosion resistance and structural integrity exceeding 10 years under proper installation and design-compliant conditions. Wear-prone parts (e.g., seals) have service lives dependent on operational conditions; we provide tailored lifespan estimates and replacement guidance. |
Q: What sealing standard does “zero-leakage under static pressure” meet? Will seals degrade rapidly in high-salinity environments? |
A: Our check valves undergo rigorous pre-delivery testing to meet API 598 or equivalent zero-leakage standards. For high-salinity media, we use specially formulated corrosion-resistant elastomers (e.g., FKM/EPDM grades) or PTFE-coated seals, alongside corrosion-resistant metal seals (for hard-seal designs), ensuring long-term sealing performance. |
The following are the representative application industries of this valve. Since butterfly valves can be applied to almost
all industries (as long as the temperature and pressure are in line), many industries have not been listed.
Petrochemical Industry
JRVAL high quality wafer check valves strictly adhere to API and NACE MR0175 standards, ensuring superior resistance to sour gas corrosion.
Water Treatment & Wastewater Systems
Our butterfly check valves cover a full range from DN32-DN1200. Featuring standard EPDM seats, they ensure over 50,000 reliable open/close cycles in clean water and light wastewater applications, with an ultra-low minimum opening pressure of just 0.02 bar.
Food & Beverage and Pharmaceutical
Sanitary check valves comply with 3A and (partially) EHEDG standards. They guarantee minimal contamination with metal ion release <5ppb and TOC <10ppb. Each valve undergoes 100% air-tightness testing for zero leakage and comes with complete material certificates and surface roughness reports.
Mining & Metallurgy
JRVAL quality wafer check valves offer specialized materials or liner designs. Our specific wear-resistant models boast over 50% longer service life than standard stainless steel check valves in slurries with 30% solids, and can withstand various strong acids like sulfuric and hydrochloric acid.
HVAC & Building Systems
JRVAL economical wafer check valve dual plate are designed to integrate seamlessly with building automation systems. Their low flow resistance (high Cv value) ensures significant energy savings, making them ideal for HVAC and building applications.
Marine/Shipbuilding Industry
JRVAL provides marine-grade stainless steel wafer check valve that comply with relevant standards and can be supplied with ship inspection certificates. Our specific Super Duplex Stainless Steel models (PREN>40) demonstrate exceptional resistance to pitting and crevice corrosion, even in seawater with chloride concentrations as high as 50,000ppm.
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Address: DaZhan Industrial Park, Xiaozhan Town, Jinnan District, Tianjin, China
Copyright @ 2025. Tianjin Jiangrui Steel Casting Co., Ltd.
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