Cashco – 3100 Pressure Vacuum ValveEnquire Now

Cashco 3100 PV Vent pressure and vacuum relief valve used on atmospheric and low-pressure storage tanks, featuring air-cushioned seat design and API 2000 compliance.

BRAND: CashcoCATEGORY: Over Pressure Protection, Tank Equipment,

Safe tank venting. Fewer emissions. Certified performance.

The Cashco 3100 Pressure Vacuum Valve is designed to protect atmospheric and low-pressure storage tanks by providing precise pressure and vacuum relief. When tank pressure rises due to product movement or thermal expansion, the vent opens to release vapour. When internal pressure drops, it allows air in to prevent tank collapse.

An air-cushioned seating system ensures tight sealing to minimize vapour emissions and prevent product loss, reducing both environmental risk and unnecessary waste. Each unit is tested and certified to API 2000, giving operators confidence that tanks remain within safe limits under all process conditions.

The 3100’s modular design allows easy configuration for pressure-only, vacuum-only or combined service, simplifying specification and maintenance. Available in a range of materials and set-pressure options, it provides long-term, low-maintenance protection for storage tanks across the chemical, refining, and general process industries.

  • Protect atmospheric and low-pressure storage tanks
  • Pressure and vacuum relief prevents over-pressure or tank collapse
  • Air-cushioned seating reduces emissions and product loss
  • Certified to API 2000 for safety and compliance
  • Modular design simplifies specification and maintenance
  • Multiple material and set-pressure options for process compatibility

Protect your tanks. Prevent losses. Stay compliant.

Download the Cashco 3100 Technical Bulletin

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Specifications

Series3100
Design

Pressure Vacuum Vent / Valve

Features
  • Multiple set pressure & vacuum ranges available
  • Modular design
  • Maintains accurate setting
  • Condensate drainage
  • Air-cushioned seating
Size
Range

DN 50 – 300 / 2″ – 12″

Operating
Range

Multiple set pressure & vacuum ranges available

Pressure
Rating

PN 10 – 16 / ANSI 150

Temperatures-198°C to 204°C
End
Connections
Flanged
Housing
Materials

Aluminum / Carbon steel / Stainless Steel / Derakane 470 / Hetron 800

Standards
  • ATEX 2014/34/EU
  • PED 2014/34/EU
  • API 2000 Std – Sizing
Options &
Accessories
  • Vacuum screen
  • Sizing report
  • NACE Certification
  • Oxygen cleaning
Applications

Pressure & vacuum protection for atmospheric & low pressure storage tanks due to thermal changes or product movement in and out of the tank.

Brochures

Cashco – Tank Equipment Vapor Control (12) Cashco – 3100 PV Valve EOL – Specs (8)

IOM

Cashco – 3100 PV Valve EOL – IOM (15)

Videos

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