Premium Automatic Check Valve for HVAC Systems and Fire Safety

• Customization: Available
• Media: Water
• Temperature: Low Temperature
• Model NO.: DN350
• Material: Stainless Steel
• Connection Form: Clamp
• Structure: Swing
• Pressure: High Pressure
• Function: Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence
• Sealing Form: Gland Packings Globe Valve
• Flow Direction: Bidirectional
• Standard: ANSI
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Applications: Water Treatment Systems
• Seal Material: EPDM/NBR/PTFE
• Transport Package: Wooden Box
• Trademark: HW
• Origin: China
• HS Code: 8481300000
• Package Size: 25.00cm * 20.00cm * 15.00cm
• Package Gross Weight: 5.500kg

Product Description

Specification

Size Range	DN15 (½") to DN1200 (48")
Pressure Rating	PN10/PN16/PN25 (EN), Class 150/Class 300 (ASME)
Temp. Range	-20°C to +200°C (varies by seal material; PTFE up to +260°C)
Cracking Pressure	0.05 - 0.1 bar (low-pressure types), Adjustable (high-precision models)
Leakage Class	ANSI VI (Soft Seat), ANSI IV (Metal Seat)
Flow Direction	Unidirectional (Arrow marked on body)

Packing & Delivery

Key Advantages:  

- 24/7 multilingual support (English, Spanish, Russian, Arabic, etc.).  

- Fast delivery: 15–30 days for standard orders.  

- Lifetime technical guidance and spare parts supply.  

Company Profile

Shandong Huawo Fluid Equipment Co., Ltd 

Your Trusted Partner in Precision Fluid Control Solutions.  

About Us 

Founded in 2008 in Jinan, China's iconic "Spring City," Shan Dong Huawo is a National High-Tech Enterprise dedicated to the integrated R&D, design, production, and sales of industrial fluid automation control systems. For over 15 years, we have pioneered advancements in fluid control technology, driven by our mission to deliver unmatched precision, stability, and reliability for global industries.  

FAQ

Q: What types of valves do you manufacture?

A: We specialize in gate valves, globe valves, ball valves, butterfly valves, and check valves, available in various materials including stainless steel, carbon steel, and special alloys.

 

Q: Are your electric actuators compatible with different valve brands?

A: Yes, our actuators are designed to ISO standards and can be adapted to fit most major valve brands through customizable mounting kits.

 

Q: What certifications do your products have?

A: Our products are CE, ISO 9001 certified, and comply with API, ANSI, and other international standards. Specific certifications available upon request.

 

Q: Can you provide explosion-proof actuators for hazardous areas?

A: Absolutely, we offer ATEX and IECEx certified explosion-proof electric actuators suitable for Zone 1 and Zone 2 hazardous environments.

 

Q: What is your production lead time?

A: Standard products: 15-30 days after order confirmation. Custom solutions may require 30-45 days. Rush services available for urgent projects.

 

Q: Do you offer smart valve solutions with IoT capabilities?

A: Yes, we provide intelligent actuators with Modbus, Profibus, or wireless connectivity for remote monitoring and control.

 

Q: What warranty do you provide?

A: We offer 12-month warranty for valves and 12-month warranty for actuators, with extended warranty options available.

 

Q: Can you assist with valve and actuator selection for specific applications?

A: Our engineering team provides free technical consultation to help select the optimal valve-actuator combination for your system requirements.

 

Q: What after-sales services do you offer?

A: We provide installation guidance, maintenance training, spare parts supply, and emergency technical support via email/phone.

 

Q: How do you handle international shipments?

A: We arrange sea/air freight with proper export packaging (wooden crates for valves), handle all customs documentation, and provide door-to-door logistics solutions.