s.55 KFE cap & strap

Info request

full port 1/4”
hot forged brass ball valve

Many HVAC applications require a blowdown valve to drain water from the strainer.

RuB ’s new s.55 cap & strap valve is designed with a full port for maximum flow.

Because of the O-ring stem seal design, no maintenance is ever required.
3/4” thread gives the possibility to easily fit a hose holder available as option, for the connection of a waste water collection pipe.

Technical Data
  • No metal-to-metal moving parts
  • No maintenance ever required
  • Handle clearly shows ball position
  • Silicone-free lubricant on all seals
  • Chrome plated brass ball for longer life
  • Each valve is seal tested for maximum safety
  • Double seal system
  • Hot forged sand blasted, unplated brass body and cap sealed with Loctite® or equivalent thread sealant
  • Finest brass according to EN 12165 and EN 12164 specifications
  • Blowout-proof brass stem with EPDM O-ring
  • Maintenance- free, double EPDM O-ring at the stem for maximum safety
  • Pure PTFE self-lubricating seats with flexible-lip design
  • 1/4″ ISO 228 parallel male thread by 3/4″ ISO 228 thread closed by cap

  • Full port for maximum flow
  • Reinforced nylon black wedge handle removable with valve in service
Working pressure & temperature
  • 40 bar (600 PSI) non-shock cold working pressure
  • -20°C to +90°C (-4°F to +200°F)
  • +120°C screw driver and wrench operated version
  • WARNING: freezing of the fluid in the installation may severely damage the valve
  • Screw driver or wrench operated
  • Nylon wedge handle yellow, red or green
  • Grey wedge handle in Grivory® – high performing polymer
  • 1/4″ NPT taper ANSI B.1.20.1 male thread by 3/4″NH  hose thread
  • Hose holder for connection of waste water collection pipe
  • Seal washer on 1/4″ ISO 228 parallel male thread
  • Additional connection options on demand
Approved by or in compliance with
  • GOST-R (Russia)
  • EAC – Declaration of conformity (Russia, Kazakhstan, Belarus)
  • RoHS Compliant (EU)


NOTE: approvals apply to specific configurations/sizes only.

Part descriptionQ.tyMaterial
1Unplated body1CW617N
2Body seat1PTFE
3Chrome plated ball1CW617N
4Retainer seat1PTFE
5Unplated retainer nut1CW617N
6Black strap1Plastic
7Unplated cap1CW617N
8Seal cap1EPDM
9Black handle1Nylon glass filled 30%
10Zinc plated screw1CB4FF (EN10263-2)
11Unplated stem1CW617N

DN shows the nominal flow diameter.

Pressure-temperature chart
Pressure drop chart
Ask for additional information on the whole range of RuB products and consult with your supplier for special applications.
XCES55KFE - 4266