High performance 3 piece full bore 316 Stainless Steel ball valve with BSP threaded connections and a double acting 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. Reinforced PTFE seats for temperatures up to 180°C. Anodised aluminium double acting pneumatic actuator. Typical applications include water treatment, chemical, marine, petrochemical and general industry. Length to DIN3202-M3 and Threads to ISO7/1. Watermark valves available upon request, contact Sales for more information. Watermark License Number WMK26529 approved to WMTS 012:2018.

Model Size (BSP) DN (mm) Actuator Media Pressure Media Temperature Actuator Pressure Actuator Port Size
BLS2B-DA-RT 1/4 8 DA50 Vacuum (29" Hg) to 63 BAR (10 BAR Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS3B-DA-RT 3/8 10 DA50 Vacuum (29" Hg) to 63 BAR (10 BAR Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS4B-DA-RT 1/2 15 DA50 Vacuum (29" Hg) to 63 BAR (10 BAR Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS5B-DA-RT 3/4 20 DA50 Vacuum (29" Hg) to 63 BAR (10 BAR Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS6B-DA-RT 1 25 DA50 Vacuum (29" Hg) to 63 BAR (10 BAR Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS7B-DA-RT 1 ¼ 32 DA63 Vacuum (29" Hg) to 63 BAR (10 BAR Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS8B-DA-RT 1 ½ 40 DA63 Vacuum (29" Hg) to 63 BAR (10 BAR Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS9B-DA-RT 2 50 DA75 Vacuum (29" Hg) to 63 BAR (10 BAR Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS10B-DA-RT 2 ½ 65 DA88 Vacuum (29" Hg) to 63 BAR (10 BAR Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS11B-DA-RT 3 80 DA100 Vacuum (29" Hg) to 63 BAR (10 BAR Steam) -20°C to 180°C 6 to 8 BAR 1/4"
BLS12B-DA-RT 4 100 DA115 Vacuum (29" Hg) to 63 BAR (10 BAR Steam) -20°C to 180°C 6 to 8 BAR 1/4"

Also available in NPT, please contact us.

Stainless Steel Double Acting Ball Valve Pressure vs Temperature

Model Size Actuator d L h A B P
BLS2B-DA-RT 1/4" DA50 11 50 32.5 138 90 1/8"
BLS3B-DA-RT 3/8" DA50 12.5 60 32.5 138 90 1/8"
BLS4B-DA-RT 1/2" DA50 15 75 42 138 90 1/8"
BLS5B-DA-RT 3/4" DA50 20 80 50 138 90 1/8"
BLS6B-DA-RT 1" DA50 25 90 58 138 90 1/8"
BLS7B-DA-RT 1-1/4" DA63 32 110 64 162 100 1/8"
BLS8B-DA-RT 1-1/2" DA63 40 10 69.5 162 100 1/8"
BLS9B-DA-RT 2" DA75 50 140 78 208 117 1/8"
BLS10B-DA-RT 2-1/2" DA88 65 185 100 245 136 1/8"
BLS11B-DA-RT 3" DA100 80 205 112.5 266 142 1/4"
BLS12B-DA-RT 4" DA115 100 240 125.5 310 172 1/4"

All dimensions are in mm unless otherwise stated

Item Description Material
1 Body CF8M
2 Ball SS316
3 Ball Seat 15%R-PTFE
4 Thrust Washer PTFE
5 Body Gasket PTFE
6 O-Ring Viton
7 Stem Packing PTFE
8 Gland SS304
9 Tab Washer SS304
Item Description Material
10 Stopper SS304
11 Stem SS316
12 Belleville Washer SS301
13 Spring Washer SS304
14 Nut SS304
15 Bolt SS304
16 Cap CF8M
17 Actuator Aluminium

Size 1/4" to 4" BSP
Body 316 Stainless Steel 3 piece
Seat Reinforced PTFE
Pressure 63 BAR
Temperature -20°C to 180°C
Actuation Double Acting Pneumatic

Product History