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      Your current location: ProductsOther ValvesAll Weather Fire-retardant Breathing Valve

      QZF-89 All Weather Fire-retardant Breathing Valve

      Product overview

      Product model: QZF-89
      Valve Diameter: DN50-300mm, NPS2"~12"
      Nominal pressure: PN1.0MPa
      Explosion-proof grade: BS 5501: IIA, IIB, IIC
      Main material: carbon steel WCB, stainless steel 304, 316, aluminum alloy
      Positive pressure valve disc material: stainless steel 304, 316, aluminum alloy
      Negative pressure valve disc material: stainless steel 304, 316, PTFE
      Flange standard: ANSI, API, ASME, can be JIS standard

      QZF-89 All Weather Fire-retardant Breathing Valve product details

      QZF-89 All Weather Fire-retardant Breathing Valve performance and features

      QZF-89 All Weather Fire-retardant Breathing Valve produced and sold by Baigang valve group is installed on the fixed roof tank ventilation device, play a reduction of oil evaporation loss, control of tank pressure and prevent the introduction of the role of the outside flame. The valve has a large amount of ventilation, leakage, corrosion resistance and other characteristics, and electrostatic grounding line so that the valve and the tank to maintain equipotential. The valve has antifreeze properties, suitable for cold areas.


      QZF-89 All Weather Fire-retardant Breathing Valve main technical parameters

      Positive pressure

      353 Pa (36 mmH2O), 980.7 Pa (100 mmH2O)

      Negative pressure

      294.2 Pa (36 mmH2O)


      QZF-89 All Weather Fire-retardant Breathing Valve parts and components of the material

      Body material

      Carbon Steel WCB, Stainless Steel 304,316, Aluminum Alloy

      Positive pressure valve disc material

      Stainless steel 304,316, aluminum alloy

      Negative pressure valve disc material

      Stainless steel 304,316, PTFE PTFE

      Ambient temperature ℃

      -30 ~ 60


      QZF-89 All Weather Fire-retardant Breathing Valve GB flange connection Dimensions: GB, JB

      specification

      Installation size (mm)

      D1

      D

      L

      H

      Nd

      DN50

      Ø110

      Ø140

      362

      360

      4 × 14

      DN80

      Ø170

      Ø185

      513

      445

      4 × 18

      DN100

      Ø170

      Ø205

      513

      445

      4 × 16

      DN150

      Ø225

      Ø260

      640

      610

      8 × 18

      DN200

      Ø280

      Ø315

      770

      700

      8 × 18

      DN250

      Ø335

      Ø370

      918

      828

      12 × 18

      DN300

      Ø395

      Ø435

      1050

      910

      12 × 23


       
      QZF-89 All Weather Fire-retardant Breathing Valve API flange connection size: ANSI, API, ASME for JIS standards

      specification

      Installation size (mm)

      D1

      D

      L

      H

      Nd

      2

      120.5

      152

      362

      360

      4 × 14

      3

      152.5

      190

      513

      445

      4 × 18

      4

      190.5

      229

      513

      445

      4 × 16

      6

      241.5

      254

      640

      610

      8 × 18

      8

      298.5

      343

      770

      700

      8 × 18

      10

      362

      406

      918

      828

      12 × 18

      12

      483

      432

      1050

      910

      12 × 23



      Reminder:

      All text, data and pictures in this article are for reference only.To see more details of the QZF-89 All Weather Fire-retardant Breathing Valve performance parameters, structural dimension parameters, pricing, etc., or to request high quality printing samples, please Contact us.

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