FM Sidewall Fire Sprinkler Head

Name: China FM Sidewall Fire Sprinkler Head Manufacturers Suppliers Factory - Customized Service - CA-Fire Protection
Brand: CA-FIRE
SKU: 286577176

This FM-certified sidewall fire sprinkler head is wall-mounted, ideal for spaces with limited ceiling installation. Its 68°C (155°F) heat-sensitive glass bulb activates as fire temperatures rise, discharging water in a directional spray.
Marked “NON-FTR” and FM-compliant, it suits commercial/residential areas like narrow hallways or small rooms. As a core automatic fire protection component, it enables targeted suppression while adapting to constrained installation layouts.

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Description

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Installation Spacing Codes for FMK5.6-68 Sidewall Sprinklers

FM Sidewall Fire Sprinkler Head

Per NFPA 13 (a key fire code), installation spacing rules for the FMK5.6-68 sidewall sprinkler include:

From the mounting wall: No more than 150mm (6 in) (to ensure proper spray direction) and no less than 40mm (1.5 in) (to avoid wall interference).

From ceilings: 100–300mm (4–12 in) between the sprinkler top and ceiling (prevents coverage blockage in ceilinged spaces).

Between adjacent sprinklers: Maximum 4.6m (15 ft) and minimum 2.4m (8 ft), balanced to ensure full coverage without overlapping gaps. These specs align with the sprinkler's FM certification for compliance.

Spray Coverage Range of FM K5.6-68 Sidewall Sprinkler (Standard Pressure)

Under the standard working pressure (0.1MPa), the FMK5.6-68 sidewall sprinkler (with directional discharge design) has a targeted coverage range:

Length (along spray direction): Up to ~6.1m (20 ft), optimized for linear spaces like corridors.

Width (perpendicular to spray direction): ~2.4–3m (8–10 ft), ensuring lateral coverage without gaps.

This range aligns with FM and NFPA 13 requirements, tailored to its sidewall mount to fully cover constrained areas (e.g., narrow hallways) while avoiding blind spots, validating its suppression effectiveness.

What sidewall-installation-related performance tests are covered in this FMK5.6-68 sprinkler's FM certification?

Spray Coverage Uniformity Test

This test evaluates water distribution under standard 0.1MPa pressure, specific to sidewall mounting. It measures water volume across the sprinkler's designed length (≈6.1m) and width (2.4–3m) ranges. FM requires even coverage (no blind spots) per NFPA 13, confirming the directional sidewall discharge delivers sufficient water to all targeted areas. This ensures the sprinkler suppresses fires uniformly in constrained spaces like corridors, a core certification requirement.

Wall & Ceiling Interference Test

Tailored to sidewall installation, this test simulates compliant spacing (40–150mm from walls, 100–300mm from ceilings) to check if these surfaces block or distort the spray pattern. FM verifies that within code-approved gaps, water discharge isn't obstructed-critical for sidewall units, which are prone to wall/ceiling interference. Passing this test ensures the sprinkler performs as designed in real-world installation layouts.

Activation & Discharge Consistency Test

Focused on sidewall mounting posture, this test checks 68℃ glass bulb activation timing and K5.6 flow coefficient consistency across minor installation angle deviations (allowed by codes). FM validates the sprinkler activates reliably at 68℃ and maintains standard flow, regardless of small positional variances common in sidewall setups. This ensures batch-to-batch performance uniformity for safe, predictable fire response.

Low-Pressure Performance Test

Sidewall sprinklers often serve small systems with pressure fluctuations, so this test assesses performance at reduced pressure (e.g., 0.05MPa). FM verifies the spray coverage range and water flow remain effective (meeting minimum suppression requirements) even under low pressure. This is key for sidewall applications (e.g., narrow hallways) where system pressure may be lower, ensuring the sprinkler still functions as certified.

FM Sidewall Fire Sprinkler Head-Technical Parameter

Specification	FM Sidewall Fire Sprinkler Head Details
K Factor	K=5.6(K80)
Thread Size	R₂1/2"-1/2"NPT
Type	Upright/Pendent/Sidewall
Glass Bulb Diameter	5mm/3mm
Frame Finish	Chrome Plated,Brass
Deflector Finish	Chrome Plated,Copper; pendent is SS material
Certificate	FM
SIN	NF3151/NF3251/NF3351/NF3131/NF3231/NF3331