SKU: BLFSR

Stainless Steel Spring Return Threaded Fire Safe Ball Valve

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Three piece full bore 316 Stainless Steel Fire Safe Ball Valve with BSP (or NPT) threaded connections and a spring return pneumatic actuator. Self adjusting stem packing assembly with Belleville spring for temperature fluctuations and vibration. Pre drilled metric hole on ISO5211 direct mounting pad to minimise any thermal transfer from valve to actuator. Anodised aluminium spring return pneumatic actuator which allows a fail safe position if air is lost. Typical applications include anywhere a fire safe threaded ball valve is needed. Choose between BSP (by far the most common) or NPT thread standards.

Model Size (BSP or NPT) Size (mm) Actuator Media Pressure Media Temperature Actuator Pressrue Actuator Port Size
BLF54B-SR-RT 1/2 15 SR50 Vacuum (29" Hg) to 130 BAR -20°C to 180°C 6 to 8 BAR 1/8"
BLF55B-SR-RT 3/4 20 SR50 Vacuum (29" Hg) to 130 BAR -20°C to 180°C 6 to 8 BAR 1/8"
BLF56B-SR-RT 1 25 SR63 Vacuum (29" Hg) to 130 BAR -20°C to 180°C 6 to 8 BAR 1/8"
BLF57B-SR-RT 1 ¼ 32 SR75 Vacuum (29" Hg) to 130 BAR -20°C to 180°C 6 to 8 BAR 1/8"
BLF58B-SR-RT 1 ½ 40 SR75 Vacuum (29" Hg) to 130 BAR -20°C to 180°C 6 to 8 BAR 1/8"
BLF59B-SR-RT 2 50 SR88 Vacuum (29" Hg) to 130 BAR -20°C to 180°C 6 to 8 BAR 1/8"
BLF510B-SR-RT 2 ½ 63 SR100 Vacuum (29" Hg) to 130 BAR -20°C to 180°C 6 to 8 BAR 1/4"
BLF511B-SR-RT 3 80 SR115 Vacuum (29" Hg) to 130 BAR -20°C to 180°C 6 to 8 BAR 1/4"
BLF512B-SR-RT 4 100 SR125 Vacuum (29" Hg) to 130 BAR -20°C to 180°C 6 to 8 BAR 1/4"

For Sprung Open the ‘5’ in the product code changes to a ‘6’.

 

Size 1/2" to 4" BSP or NPT
Body 316 Stainless Steel 3 piece
Seat PTFE
Pressure 130 BAR
Temperature -20°C to 180°C
Actuation Spring Return Pneumatic

DATA SHEET
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