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Angled view of brass 1/4" safety valve with male threads, hex nut and knurled collar, engraved markings visibleSide-angle of brass safety valve showing male threads, hex nut, knurled sleeve and engraved text on the capFront view of brass safety valve cap with small central hole and engraved text around the rim, knurled section behindVertical view of brass safety valve showing open male threads, hex nut, knurled collar and engraved markings on the body

Safety Valve 1/4" 12 Bar Pressure Relief – Brass Machined

12 Bar pressure relief valve (1/4" connection) for compressors, tanks, and inflators. Brass construction, preset relief setting.

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Description

Safety Valve 1/4" 12 Bar Pressure Relief

Brief Overview

This brass-bodied safety relief valve is engineered to protect pneumatic systems—compressors, pressure tanks, and inflators—from dangerous overpressurization. Preset to 12 Bar, it automatically vents excess air when system pressure exceeds the threshold, preventing equipment damage and ensuring operator safety. The 1/4" male threaded inlet connects seamlessly into standard pneumatic line work. For systems requiring different protection levels, lower-pressure relief options and check valve alternatives are also available for integrated system design.

Key Features

  • Pressure Setting: 12 Bar relief threshold (preset, non-adjustable)
  • Connection: 1/4" male threaded inlet with discharge orifice
  • Construction: Machined brass with smooth, corrosion-resistant finish
  • Valve Type: 3804D series relief mechanism
  • Installation: Hexagonal nut and knurled collar design for secure, hand-tight tightening
  • Flow Direction: Clearly marked with engraved arrow and pressure rating indicators
  • Compliance: Marked with standard reference designations for pressure equipment

Why Resellers Choose This Valve

Reliable Margin Builder Safety valves are recurring consumables in compressed air shops—replacement frequency drives repeat orders. At 12 Bar, this is a workhorse rating for industrial and commercial compressor systems, covering a substantial customer base.

Low Support Load Preset relief valves require zero field adjustment—install, forget, and service. This eliminates customer troubleshooting calls and positions your shop as a trusted, no-hassle supplier.

Bulk Opportunity Compressor techs typically stock these in multiple bar ratings. Stock this alongside 10 Bar alternatives to capture full system builds and emergency replacements.

Technical Specifications

Specification Value
Connection Size 1/4" male thread
Pressure Setting 12 BAR
Valve Type 3804D relief mechanism
Material Machined brass
Thread Style Standard pneumatic male
Operating Range Up to 12 BAR maximum
Discharge Capacity Full line venting at relief threshold
Installation Direct inline with wrench-flats tightening

Application Context

Primary Markets:

  • Industrial air compressor protection (fixed installation)
  • Portable inflator systems and pressure tanks
  • Pneumatic tool stations requiring overpressure shutdown
  • Mobile service units and workshop compressed air systems

Why 12 Bar Matters: At 12 BAR relief setting, this valve protects mid-range compressor systems (typical operational pressures 8–10 BAR) with a built-in safety margin. It's the sweet spot for professional shops handling mixed equipment loads.

Bottom Line for Your Business

Stock this valve as a system-critical safety component. Its preset, maintenance-free design ensures customer satisfaction and repeat orders. Position it alongside complementary pressure management tools to build a complete air system offering. The brass construction and engraved pressure markings communicate professional-grade quality to your end customers—reinforcing your shop's reputation as a reliable, standards-compliant supplier.


Ready to add to your inventory? This is a high-velocity safety item with predictable replacement cycles. Order in bulk and establish this as a non-negotiable stock line.