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Typical concealed sprinkler with cover plate
Typical product · brand and markings may differ

Sprinklers

Concealed sprinkler with cover plate

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K-factorK-factorThe sprinkler's discharge coefficient: flow = K × √pressure. A higher K gives more water at the same pressure. K5.6 (K80 metric) is the usual head for light and ordinary hazard.
TemperatureTemperature ratingThe temperature at which the glass bulb or link breaks and the sprinkler opens. 68 °C (red bulb) suits normal ceilings; hot spaces such as kitchens and plant rooms need a higher rating.
Cover finish
ResponseResponseHow fast the heat-sensitive element reacts. Quick response heads open sooner and are usual in light hazard areas such as hotels, offices and hospitals; standard response suits many ordinary hazard and storage areas.
Listing requiredListing requiredWhether the item must carry a third-party listing or approval: UL (Underwriters Laboratories), FM (FM Approvals) or EN certification, often by LPCB. Listings belong to the manufacturer of each product; we quote only products that carry the one you ask for.

Line: Concealed sprinkler with cover plate

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Concealed sprinkler with cover plate: products we supply

ProductK-factorResponseThreadApplication
Residential concealed pendent sprinklerK4.9 (K71 metric) · Quick · ½" NPT (15 mm) · ResidentialK4.9Quick½" NPTResidential
Residential concealed pendent sprinklerK4.9 (K71 metric) · Quick · ½" NPT (15 mm) · ResidentialK4.9Quick½" NPTResidential
Residential concealed pendent sprinklerK4.9 (K71 metric) · Quick · ½" NPT (15 mm) · ResidentialK4.9Quick½" NPTResidential
Residential concealed pendent sprinklerK5.6 (K81 metric) · Quick · ½" NPT (15 mm) · ResidentialK5.6Quick½" NPTResidential
Flush pendent sprinklerK4.1 (K61 metric) · Quick · ½" NPT (15 mm) · Decorative, flushK4.1Quick½" NPTDecorative, flush
Adjustable concealed pendent sprinklerK5.6 (K81 metric) · Standard · ½" NPT (15 mm) · Decorative, adjustable concealedK5.6Standard½" NPTDecorative, adjustable concealed
Adjustable concealed pendent sprinklerK5.6 (K81 metric) · Quick · ½" NPT (15 mm) · Decorative, adjustable concealedK5.6Quick½" NPTDecorative, adjustable concealed
Adjustable concealed pendent sprinklerK5.6 (K81 metric) · Standard · ½" NPT (15 mm) · Decorative, adjustable concealed, 300 psiK5.6Standard½" NPTDecorative, adjustable concealed, 300 psi
Adjustable concealed pendent sprinklerK5.6 (K81 metric) · Quick · ½" NPT (15 mm) · Decorative, adjustable concealed, 300 psiK5.6Quick½" NPTDecorative, adjustable concealed, 300 psi
Adjustable concealed pendent sprinklerK8.0 (K115 metric) · Quick · ¾" NPT (20 mm) · Decorative, adjustable concealed, extended coverage light hazardK8.0Quick¾" NPTDecorative, adjustable concealed, extended coverage light hazard

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