In-Line Vent Valve Model 800	|	Model 850	|	Model 860
In-Line Vent Valve Model 800-PSO	|	Model 851	|	Model 960
End-of-Line Stack Vent Valve Model 900	|	Model 950	|
	|	Model 951	|	Model 850/MVC & 952/MVC
Model 450	|	Model 952	|
Model 550	|	Model 953	|	Pressure/Vacuum Relief Valve with Flame Arrestor

ENARDO Series 851

High-Performance Top-Mount Pressure or Side-Mount Vacuum Relief Valve

Applications

ENARDO’s Series 851 is an advanced design for pipe-away applications. This high-performance valve utilizes the latest technologies to provide protection against positive overpressure, prevent air intake and evaporative loss of product, and help contain odorous and potentially hazardous vapors. The Series 851 offers features that exceed the performance of standard valves on the market, particularly in very cold ambient conditions and applications involving sticky materials.

Features

• Pressure or vacuum setting:
  • 0.5 to 32.0 oz./sq. in. (0.5 oz. increments)
  • 1.0 to 55.0 in. H₂0 (0.5 in. increments)
  • (2.0 to 138.0 mbar – 2.2 mbar increments)
• Advanced PPS composite thermoplastic pallet and seal material for superior resistance to corrosion, freezing and sticking
• Patented Saber Guide (U.S. Patent No. 591330) valve system provides for smooth valve stroke during operation and reduces valve wear
• Housing material: aluminum, ductile iron, stainless steel, carbon steel
• Size: 2” (50 mm) through 12” (300 mm)
• Certifications: ATEX

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