What are the main materials of the valve?

The valve body is made of high-strength cast aluminum or stainless steel, the spring is anti-rust high-strength steel, and the sealing part adopts wear-resistant NBR rubber, which features anti-corrosion, anti-rust and long service life.

How to install the pressure relief valve?

It is installed on the top of the silo by flange or clamp connection. The installation is simple and fast, no complicated tools and professional operation are required.

Sheet Silo Pressure Safety Valve Protects Sheet Storage Silo From Overpressure Damage

Name: Sheet Silo Pressure Safety Valve Protects Sheet Storage Silo From Overpressure Damage
Brand: Shandong Cad Industry Machinery Equipment Co., Ltd.
SKU: 2193236452

Shandong, ChinaShandong Cad Industry Machinery Equipment Co., Ltd.

US$499.00

1 Piece

Product profile

Customization

Available

After-sales Service

Provided

Warranty

Provided

Model NO.

VPS250A

Measuring Range

High-pressure Gauge

Type

General Pressure Gauge

Accuracy

2.5

Display

Customized Required

Application

Industrial, Civil, Silo, Hopper, Storage Bin

Structure

Spring Pressure Gauge

Connection Type

Flange / Clamp

Function

Explosion Protection Keep Air Pressure Safety Ofsi

Installation Structure

Direct Mounting

Features of Measurement Medium

General Pressure Gauge

Indicating Pressure Reference

General Pressure Gauge

Positive Pressure

280 to 1000mm H2O

Negative Pressure

-20 to -120 Mmh2o

Installation Position

Silo Top

Weight

9.5kg

Safety Grade

Industrial Safety Standard

Opening Pressure

Custom Adjustable

Alternative Name

Cement Silo Prv, Silo Overpressure Vacuum Relief V

Working Temperature

-20℃ ~ +80℃

Product Name

Panelized Silo Pressure Safety Relief Valve

Model Number

Customized / Optional

Nominal Diameter

DN100 / DN150 / Custom

Transport Package

Wooden Box

Specification

Customizatable

Trademark

SDCAD

Origin

Shandong, China

Key features

Automatic Overpressure Relief:Instantly releases excess pressure during pneumatic (air-assisted) cement loading, preventing silo rupture, weld cracking, and top-cone damage.

Dual Protection: Overpressure + Vacuum Relief Also relieves negative pressure created during silo discharge, protecting the silo from vacuum collapse. Two-way safety in one compact unit.

Fast, Precise Response Precision-machined valve seat and spring calibration for accurate set pressure and repeatable performance. Quick open/close action minimizes pressure spikes and product

Dust-Tight & Environment-Friendly Re-seals fully after relief, keeping cement dust inside the silo. Meets dust-emission and workplace-safety requirements no fugitive dust at the silo top.

Durable, Corrosion-Resistant Build Available in powder-coated carbon steel or stainless steel (SS304/SS316) for long service life in harsh, dusty environments. Weatherproof top cover prevents

Anti-Caking, Self-Cleaning Design Smooth internal surfaces and steep discharge geometry prevent cement caking and clogging the valve stays functional even after long idle periods.

Low Maintenance Tool-free inspection and easy access for cleaning and seal replacement. Minimal spare parts; simple structure with nothing to lubricate regularly.

Smart Integration Options Optional limit switch / position sensor sends an alarm signal to the plant PLC or control room the moment the valve opens.

Easy Installation & Adaptability Standard flange sizes match common silo top openings; retrofit-friendly. Compact and lightweigh no extra structural support needed.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceSelf-branded

Shandong Cad Industry Machinery Equipment Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 6 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.52h

AI-Powered supplier vetting

SummaryShandongCAD Industrial Machinery Equipment Co., Ltd. is a limited company in Asia with 19 employees and affiliated companies. It offers cement silos and conveying-related equipment, reports flexible customization and OEM service for well-known brands, and states that it has written inspection procedures, manufacturing contracts with affiliated subcontractors, inventory capability, and average lead times within 15 working days in both peak and off-seasons. The company reports six years of export experience and customers in multiple countries. However, it has no available SDK, overseas warehouse, overseas showroom, overseas agents or branches, and has not participated in offline trade shows. Financial information is represented only by years, without assessable financial figures. One trade record is provided, associated with LANMIC EXPORTS PVT LTD, for a tube-type screw conveyor.

Supplier typeThe supplier is identified as a combined-type limited company, headquartered in Asia, with 19 employees and affiliated companies. Its stated product scope includes cement silos, mobile asphalt mixing plants, conveyors, and bucket elevators.

After-Sales capabilityThe company states that it has a comprehensive pre-sales and after-sales service system and inventory capability. However, it lacks overseas warehouses, showrooms, agents, and branches, and reports zero countries with overseas service offerings, indicating limited localized support evidence.

Production capacityThe supplier reports valid manufacturing-capacity contracts with affiliated subcontractors, inventory capability, written and followed finished-product inspection instructions, two qualified service-capability suppliers, and lead times within 15 working days in both peak and off-seasons. These statements support operational production and fulfillment capability, although production scale is not quantified.

Customization capabilityThe supplier explicitly offers customization from samples, designs, minor and full customization, and flexible customization. It also states that it provides OEM services for well-known brands, directly supporting broad customization capability.

Client casesThe supplier reports customers in Australia, the United States, Canada, Mexico, Germany, Denmark, Madagascar, Japan, South Korea, Thailand, Jordan, Bangladesh, and other countries. A trade record links the supplier to LANMIC EXPORTS PVT LTD for a tube-type screw conveyor, but only one transaction is documented in the provided data.

Product Q&A

Q:What is the function of the silo pressure safety relief valve?

This valve provides dual overpressure and vacuum protection for panelized cement silos. It automatically releases excess positive pressure and balances negative pressure inside the silo during feeding and discharging, effectively preventing silo deformation, cracking and dust leakage.

Q:What silo types is this valve suitable for?

It is specially designed for split/panelized cement silos, also widely applicable for all kinds of dry powder storage silos such as fly ash silos, mineral powder silos and lime powder silos used in concrete batching plants and construction projects.

Q:Can the opening pressure be adjusted?

Yes. The set positive pressure and negative pressure are fully adjustable according to customer silo volume and working conditions, with stable pressure control and high sensitivity.

Q:Does the valve block easily when working with powder materials?

No. Adopting professional anti-blocking structural design and stainless steel protective mesh, it avoids powder accumulation and clogging. It keeps smooth ventilation and long-term stable operation in dry powder working environment.

Q:What is the reset mode of the valve?

Full automatic spring reset. After pressure relief, the valve closes automatically without manual operation, realizing unattended automatic protection.