Holmbury / FIRG QPQ Series

Description:

FIRG QPQ Series

Coupling Category

Flat Face Couplings

Manufacturer

Holmbury

Holmbury FIRG QPQ Series Couplings are suitable for use in systems operating on mineral oil, water and other mildly corrosive fluids.
They are ideal for applications involving moderately corrosive environments where the cost of stainless steel couplings is prohibitive.

INTRODUCTION

QPQ treatment provides a corrosion resistant finish that is superior to passivated zinc plating and of lower cost than couplings produced entirely from stainless steel. In DIN 50021 salt water spray tests, Tuffride® QPQ surface hardening treatment has proved to have superior corrosion resistance properties than either electrostatic zinc or hard chrome plating. (The term QPQ is derived from Quench-Polish-Quench).
Holmbury flat face couplings have been produced since 1982.
Over the years, extensive experience has been gained in the design, manufacture and application of these products.
Consequently, Holmbury couplings have won design innovation awards and are widely regarded as the World’s leading brand of flat face coupling.

Tuffride® is a registered trademark of Degussa AG.

ADVANTAGES
  • Flat faces can easily be wiped clean before connection to prevent the ingress of contaminants into the circuit.
  • Clean disconnection - non-spill design.
  • No air intrusion during connection.
  • Streamlined flow path minimizes pressure drop.
  • Locking sleeve prevents accidental disconnection.
  • Bi-directional flow

MATERIALS
FIRG QPQ Series Couplings have QPQ treated carbon steel bodies with stainless steel and brass internal components. Seal materials are Viton and PTFE.


Type and Size Nominal diameter A B C D E F G H I K Connection force (N) Weight (kg)
FIRG 14 Q 7 1/4" 22 22 48 28 48 85.5 24 24 16.2 179 0.2
FIRG 38 Q 9 3/8" 24 27 60 32 64.5 109 26 29 19.8 173 0.35
FIRG 12 Q 9 1/2" 27 27 62.5 32 69.5 116.5 29 29 19.8 173 0.35
FIRG 12A Q 13 1/2" 32 32 68 38 73.5 125 34 34 24.5 181 0.475
FIRG 34 Q 13 3/4" 36 36 70.5 38 80.5 134.5 38.5 38.5 24.5 181 0.475
FIRG 34B Q 16 3/4" 36 36 70.5 42 78 132 38.5 38.5 27 195 0.5
FIRG 100 Q 19 1" 45 45 82.5 48 92.5 154 48 48 30 244 1.0
FIRG 114 Q 25 1¼" 55 55 90 55 105 173 60 60 36 304 1.5
FIRG 112 Q 32 1½" 70 65 111 80 132.5 215 76 72 57 427 4.5
FIRG 200 Q 45 2" 75 80 125 100 165 250 83.5 88.2 73 488 8.5


Pressure Ratings
Type and size Maximum working pressure (bar) Burst pressure coupled (bar) Burst pressure male (bar) Burst pressure female (bar)
FIRG 14 Q 300 1200 1600 500
FIRG 38 Q 300 1200 1650 750
FIRG 12 Q 300 1200 1650 750
FIRG 12A Q 250 1200 1600 600
FIRG 34 Q 250 1200 1600 600
FIRG 34B Q 250 1000 1400 550
FIRG 100 Q 250 850 1100 450
FIRG 114 Q 250 850 1100 600
FIRG 112 Q 200 700 850 400
FIRG 200 Q 180 700 700 400
Holmbury / FIRG QPQ Series
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   Reproductive Harm -
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