Positive/Negative Pressure Safety Valve Stainless Steel 304/316, Flanged Connection

• Customization: Available
• Temperature Range: -20 Degree Celsius -+ 150 Degree Celsius
• Nominal Pressure: 0.05-0.4MPa
• Model NO.: JSVA/JSVB
• Installation Mode: Flange Type
• Model Number: Jsva/Jsvb
• Transport Package: Foam and Standard Cartons
• Specification: Aluminum Alloy/Stainless Steel
• Trademark: Xuqi
• Origin: China
• Production Capacity: 50000pieces/Year

Product Description

Product Description

This Positive/Negative Pressure Safety Valve is a critical safety device installed on tank truck roofs to prevent overpressure or vacuum risks during fuel/oil transportation. It automatically releases excess pressure when internal tank pressure exceeds preset limits, ensuring operational safety and regulatory compliance.

Key Features:

• Emergency Pressure Relief: Automatically opens at preset pressure thresholds (0.05-0.4 MPa) to discharge overpressure or vacuum conditions.

• Material Options:

  • Body & Spring: Stainless Steel 304 (Standard) / 316 (High Corrosion Resistance for harsh environments).

  • Seal: NBR/FKM (Temperature-resistant up to +150°C).

• Durability: Designed for extreme temperatures (-20°C to +150°C) and corrosive media (oil, fuel, chemicals).

• Installation: Flanged connection (ANSI/ASME or DIN standards) for secure mounting on tank trucks.

• Compliance: Meets API 2000 (Ventilation Standards) and ATEX certification (optional for explosive zones).

• Applications:

  • Fuel/Oil Tank Trucks

  • Chemical Transport Vehicles

  • Storage Tank Emergency Venting

Product Parameters

Technical Specifications Table:
Parameter	Specification
Model	JSVB (Standard) / JSVA (High-Corrosion Resistance)
Material	SS 304 / SS 316 (Optional)
Temperature Range	-20°C to +150°C
Set Pressure Range	0.05-0.4 MPa (Adjustable)
Connection Type	Flanged (ANSI 150# / DIN PN16)
Seal Material	NBR (Standard) / FKM (Optional)
IP Rating	IP65 (Dustproof & Water-Resistant)
Certifications	API 2000, CE, ATEX (Optional)

Our Advantages

Xuzhou Xuqi International Trade Co., Ltd. stands out for its strong manufacturing capabilities and extensive industry experience. With the support of our two in-house factories, Jiangsu Jiasheng Petroleum Technology Co., Ltd. and Xuzhou Yikai Valve Co., Ltd., we offer high-quality, customized product solutions. Our product range includes stainless steel valves and petroleum equipment, widely used in industries such as oil, chemicals, and transportation. Through our global service network and reliable customer support, we ensure efficient and timely service, providing clients with the best solutions and experience.

Company Profile

Xuzhou Xuqi International Trade Co., Ltd. is a trusted distributor specializing in high-quality industrial products sourced from two reputable manufacturing companies: Jiangsu Jiasheng Petroleum Technology Co., Ltd. and Xuzhou Yikai Valve Co., Ltd. Both companies operate their own factories, having years of expertise in producing reliable industrial components used across a variety of sectors.
Jiangsu Jiasheng Petroleum Technology Co., Ltd. focuses on the production of key oil industry components, including fuel dispenser accessories, oil tank truck parts, and pipeline fittings. Xuzhou Yikai Valve Co., Ltd. is known for its comprehensive range of stainless steel valves, such as ball valves, gate valves, check valves, and flanged pipe fittings, all manufactured to rigorous quality standards.
As a key partner in the supply chain, Xuzhou Xuqi International Trade Co., Ltd. connects these high-quality products to international markets, serving industries like oil and gas, transportation, petrochemicals, and infrastructure. The company is committed to offering efficient and reliable service, ensuring competitive pricing and timely delivery for customers worldwide.
With a focus on fostering long-term relationships, Xuzhou Xuqi aims to deliver high-value solutions that meet the diverse needs of its clients, backed by the expertise and manufacturing capabilities of its trusted partners.

 

Packaging & Shipping

Our products are carefully packaged using foam boxes, cardboard cartons, and wooden pallets to ensure maximum protection during transit. This packaging method helps to minimize the risk of damage and ensures that products arrive in optimal condition. The foam boxes provide cushioning, while the sturdy cardboard cartons and wooden pallets offer added stability and durability. Our logistics process involves efficient transportation to the port, where goods are securely loaded and shipped, ensuring timely delivery to international destinations. This packaging and shipping approach guarantees safe handling, cost-effective logistics, and reliable service for our customers worldwide.

Detailed Photos

 

Certifications

 

FAQ

1.MOQ

 

Normally our MOQ 10-100pcs.For the goods in stock, small order is acceptable.

 

2.Price

 

Pls contact me without hestitation if you want to know the latest price.

 

3.Sample

 

Free for Existing Samples bases on its value, the sampling time is one wokable day. Customers pay for the express fee.

 

The sample fee will be refund after you purchase first order.

 

4.Quality

 

  Strict control for every step of production, better control the quality and the delivery time.

 

5.Reply

 

If you are interested in our products ,pls inquiry to me freely , We'll give you reply without delay. Contact me,
Name: Carly Qu,[phone]