Precision-Machined Locating Notches: The valve body is engineered with integral locating notches for rapid and accurate alignment with flange bolts, ensuring a simplified and error-free installation.
Robust High-Pressure Body: Built with an extra-thick, high-grade ductile iron body, this valve surpasses Heavy-Body Series standards and is reliably rated for high-pressure applications up to PN25.
Guaranteed Material Integrity: We guarantee an optimized composition for our EN 1563 Grade EN-GJS-500-7 ductile iron. We utilize the beneficial upper range of key elements like Manganese for superior strength, while strictly controlling harmful impurities like Phosphorus and Sulfur to levels far below the industry norm.
Design and Manufacture: API 609, EN 593, GB/T 12238, JIS B2032 & more. Other standards available on request.
Leakage Class: API 598 (Bi-directional Zero Leakage)
Side Flange Standards: ANSI 125LB/ 150LB; ASME; AS-D/E; BS; DIN; EN PN6/ PN10/ PN16; GB; GOST; HG/T; JIS 5K/ 10K
Top Flange (Actuator Mounting) : ISO 5211; GB 90°
Face-to-Face Dimension: ISO 5752; MSS SP-68; ASME B16.10; EN 558-1; API 609
Testing Standards: API 598; EN 12266-1; ISO 5208; BS 6755-1
Certifications: ISO 9001; CE; BV; API 609; API 598; EAC; SIL3；
Technical description
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Q&A
Specification of the Valve |
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|---|---|
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Type of Connection |
Wafer |
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Actuation |
Standard: Electric Motor Actuator (Quarter-turn) |
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Size |
1.5in ~ 48in (DN40~DN1200) |
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Pressure |
PN6~PN25 / ANSI Class 125 ~ 150 |
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Testing Pressure |
Shell: 37.5 Bar (1.5 x PN25); Seat: 27.5 Bar (1.1 x PN25) |
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Applicable Media |
Potable Water, HVAC Cooling/Heating, Wastewater, Slurries, General Chemicals, Irrigation Systems |
|
Medium Temperature |
-25°C to +180°C (-13°F to +356°F) Dependent on seat and disc material selection |
Material of the Valve |
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|---|---|
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Body |
• Ductile Iron (Heavy Duty): GGG50 / GGG40/ ASTM A536 |
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Disc |
• Ductile Iron (Nickel-Plated): DI+Ni |
| Shaft |
• High-Tensile Steel: SS420, SS431 (Standard) |
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Seat |
• Elastomers: EPDM (High Hardness), NBR |
| Coating |
• System: Fusion Bonded Epoxy (FBE) |
The HP25 Electric series integrates our robust PN25 valve with a precision motor actuator for stable, remote, and modulating flow control. Every motor-operated-butterfly-valve is torque-tested to ensure reliable operation.
Our HP25 valve and electric actuator combination is designed for process stability, offering high torque output and smart control integration where pneumatic air supplies are unavailable or insufficient.
Built with a heavy-duty GGG50 ductile iron body, this valve withstands the sustained torque loads of electric actuation. The rigid construction prevents deformation during the closing cycle, ensuring a perfect seal every time.
Our electric actuators feature a self-locking gear train that holds the valve position firmly without fluctuation. Available in multiple voltages (220V/380V/24V) with manual override handwheels for emergency operation.
Equipped with intelligent control modules, the motor-operated-butterfly-valve accepts 4-20mA signals for precise flow regulation. Ideal for balancing systems where exact valve positioning is critical for efficiency.
Perfect for industries requiring precise regulation, silent operation, or installation in areas without compressed air lines. The HP25 electric valve excels in HVAC and water infrastructure.
Our motor-operated-butterfly-valve is the standard for chiller loops and cooling towers. The modulating electric actuator allows for precise temperature control by regulating flow volume. Ideal with EPDM seats.
Used in pump stations and distribution networks where compressed air is unavailable. The electric actuator provides reliable isolation for large diameter pipes. Not suitable for applications requiring millisecond shut-off speeds.
Perfect for remote fields and automated irrigation systems. 24V DC or solar-compatible electric valves enable automated watering schedules without the infrastructure cost of air compressors.
For chemical mixing tanks requiring gradual flow additions. The electric valve prevents "water hammer" shocks common with fast-acting valves. Not recommended for explosion-proof zones unless equipped with ATEX motors.
Controls flow in aeration tanks and sludge lines. The high-torque motor easily breaks through static friction caused by settling solids. The fully sealed IP68 actuator protects against moisture and corrosion.
Used in auxiliary cooling water circuits where stable positioning is required for long periods. The self-locking gear mechanism ensures the valve stays exactly where it was set, even during power loss.
These are environments where the stability, precision, and infrastructure independence of an electric actuator outweigh the speed of pneumatics.
In remote facilities or standalone skids where installing an air compressor is cost-prohibitive, a motor-operated-butterfly-valve simply requires a power cable to provide reliable automation.
Unlike standard on/off valves, electric actuators with 4-20mA positioners can hold the disc at exact angles (e.g., 45.5 degrees) to finely tune flow rates and pressure in sensitive systems.
The slower opening and closing speed of electric motors (typically 15-30 seconds) naturally prevents hydraulic shock waves (water hammer), protecting aging pipes from bursting.
For applications requiring the valve to stay partially open for days, the self-locking gears of a motor-operated-butterfly-valve resist flow turbulence better than pneumatic springs.
Moving beyond trading companies: How a Dong Nai industrial facility optimized procurement costs by sourcing Electric Butterfly Valves directly from the foundry.
| Procurement KPIs (Key Performance Indicators) | |
|---|---|
| Project Scope | Replacement of 45 corroded manual valves with HP25 Electric Motor Operated Valves (DN150 - DN400) for a filtration unit. |
| Primary Constraint | Budget constraints ruled out Tier-1 European brands, but previous low-cost valves failed due to casting porosity and poor seating (leakage). |
| Cost Optimization | Achieved an 18% reduction in unit cost compared to comparable Tier-2 brands by sourcing directly from JRVAL (the manufacturer), eliminating distributor margins. |
| Quality Verification | 0% Leakage verified under ISO 5208 Rate A (Low Pressure Air) during pre-shipment inspection. Materials confirmed via spectrometer analysis. |
| Lead Time | Production completed in 25 days. The integrated foundry capability allowed us to cast non-standard dimensions without waiting for external sub-suppliers. |
| Warranty Terms | 24-Month Standard Warranty on both valve body and actuator, exceeding the industry standard of 12-18 months. |
The procurement team at a mid-sized industrial wastewater treatment facility in Dong Nai, Vietnam, faced a recurring issue. Their existing valves, sourced from a local trading company, were suffering from premature seal failure and casting defects after just 14 months of operation.
Mr. Nguyen Van Minh, the Senior Procurement Manager, needed to upgrade to electric automation to reduce labor costs but was skeptical of "cheap" imports. "We didn't have the budget for Rotork or AUMA," Mr. Minh noted, "but we couldn't afford another shutdown caused by a cracked valve body. We needed a supplier who actually melts the iron, not just one who assembles parts."
The client shortlisted three suppliers. JRVAL was selected not because of marketing claims, but due to transparency regarding our manufacturing capabilities and limitations. The technical vetting focused on three specific areas:
Unlike assemblers who buy castings from the open market, JRVAL operates an 81,426 m² facility with in-house casting capabilities. We provided the client with internal Spectrometer Analysis Reports for every heat number used. We also invited the client to appoint a third-party inspector (SGS) at their cost to verify our raw material handling, proving our GGG50 Ductile Iron met ASTM A536 standards.
The client required ISO 5208 Rate A sealing. Instead of relying on excessive torque (which wears out the motor), our engineering team explained our structural seat design. By optimizing the interference fit between the disc and the soft seat, we achieved a bubble-tight seal at 25 Bar without overstressing the actuator. QC Dimensional Reports using calibrated Vernier calipers were supplied for every valve.
A major concern for the client was post-warranty spare parts. We demonstrated that our HP25 valves utilize standard ISO 5211 mounting pads. This ensures that even after our 2-year warranty expires, the client can easily source compatible actuators or spare seals locally if necessary, mitigating the risk of proprietary lock-in.
The installation of the HP25 Electric Butterfly Valves was completed in late 2023.
We provided a complete data pack, including Material Test Certificates (MTC 3.1), Hydrostatic Test Reports, and Dimensional Inspection Sheets. This allowed the client's engineering team to validate the goods against their P&ID requirements before installation.
The electric actuators (24V DC / 220V AC) have integrated seamlessly with the plant's PLC. The consistent torque output—derived from our stable casting dimensions—has prevented the "stalling" issues seen with previous, poorly machined valves.
While the product has performed without fault, we established a direct line of communication via WhatsApp/WeChat for immediate technical support, bypassing the delays typical of dealing with regional distributors.
Precise control for your 25 bar systems.
We offer versatile configurations to match your site's power infrastructure and BMS requirements:
Unlike pneumatic valves with spring returns, standard electric actuators are "fail-last" (they stay in their current position upon power loss).
However, safety is not compromised. Every HP25 electric actuator comes equipped with a Manual Override Handwheel (or declutchable gear operator for larger sizes). This allows maintenance personnel to manually open or close the valve during a power outage or emergency situation.
Electric actuators apply significant, sustained torque to the valve stem, which can twist or crack inferior valve bodies over time.
As a 20-year casting expert, we produce our own GGG50 Ductile Iron bodies specifically reinforced to handle this torque. We don't just assemble parts; we control the metallurgy. We provide Mill Test Certificates (MTC) verifying the tensile strength and chemical composition of every batch, ensuring the valve outlasts the actuator.
Yes. Our standard electric actuators are rated IP67 (NEMA 4X), offering robust protection against dust and temporary water submersion.
For high-humidity environments (like tropical pump rooms), we recommend our actuators equipped with internal space heaters. These prevent condensation from forming on the circuit board, a common cause of failure in cheaper competitor products. Please specify "Heater Required" when quoting.
We provide a 24-Month Warranty on the entire assembly. However, we design for long-term flexibility:
This means if the actuator ever fails after years of service, you are not forced to buy a specific proprietary replacement. You can easily mount any standard actuator (Rotork, AUMA, or generic) onto our valve body. This "open architecture" design protects your long-term investment.
To be completely transparent: No. While our manufacturing facility is ISO 9001 and CE certified, the HP25 series is designed specifically for Industrial Water, HVAC, and Wastewater applications.
It does not carry FDA sanitary certifications or UL/FM Fire Safe approvals. By focusing strictly on industrial sectors, we avoid the high overhead costs of these niche certifications, allowing us to offer superior material quality at a more competitive price point for industrial users.
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Address: DaZhan Industrial Park, Xiaozhan Town, Jinnan District, Tianjin, China
Copyright @ 2026. Tianjin Jiangrui Steel Casting Co., Ltd.
Technical Support: Magic Lamp - Website
