4.22 [RD024] [SSU Sprinkler 5mm] [FM, UL, LPCB, VdS, CE] - Brass LR.jpg 4.22 [RD024] [SSU Sprinkler 5mm] [FM, UL, LPCB, VdS, CE] - Chrome LR.jpg 4.22 [RD024] [SSU Sprinkler 5mm] [FM, UL, LPCB, VdS, CE] LR.jpg

RD032 SSU Upright Special Response Sprinklers

  • LPCB Logo Mid grey 566d-03.jpg
  • VdS Logo mid grey 600.jpg
  • CE Logo Mid Grey 144.jpg
K factor 80 (5.6)
Standard Orifice Size 15mm (½”)
Standard Thread Size ½” NPT
Response Special Response
Bulb 4mm
Maximum Working Pressure 12.1 bar (175 psi)
Finish Brass, chrome and white paint finish. Special RAL colours available on request
Approvals LPCB, VdS, CE

The Rapidrop Model RD032 are Upright Special Response frangible glass bulb automatic sprinklers. CE marked, VdS and LPCB approved .
They are standard orifice fire sprinklers for installation in fire sprinkler
systems designed in accordance with standard installation rules, e.g. EN12845 or the requirements of the authority having jurisdiction.
Upright sprinklers produce a hemispherical water distribution pattern below the deflector. In a fire condition the heat causes the fluid in the glass bulb to expand which shatters the glass and releases the spring seal assembly. Water flows from the orifice onto the sprinkler deflector which diffuses the water into a uniform spray pattern which extinguishes or controls the fire.



K factor K80 (K5.6)
Standard Office Size 15mm (½”)
Thread Size ½”NPT 
(R½” – ½”BSPT available on special order
Max. Working Pressure 12 bar (175 psi)
Min. Operating Pressure 0.5 bar (7psi)
Factory Pressure Test 100% at 34 bar (500 psi)
Weight 57grams (2oz.)
Fitted with Bulb Protector Remove after installing sprinkler

Operating Temperatures

Nominal Operating Temperature Bulb Colour
57ºC (135ºF) Orange
68ºC (155ºF) Red
79ºC (175ºF) Yellow
93ºC (200ºF) Green
141ºC (286ºF) Blue


RD032 Design Coverage 

Spray Upright for installing only in upright position giving hemispherical discharge below the deflector with little or no water being discharged upwards. For sprinkler coverage area and placement refer to NFPA 13 standards or other installation rules for automatic sprinkler systems as required by the authority having jurisdiction.  The following details are provided for information only.

Rapidrop RD032 SSU Fire Sprinkler HeadRD032 SSU Sprinkler Design Coverage


Rapidrop K80 (K5.6) Sprinkler Flow Characteristics


Minimum Operating Pressure K80 Sprinkler Heads