High performance 3 way (L and T port) reduced 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. Long neck to minimise any thermal transfer from valve to actuator. Reinforced PTFE seats for temperatures up to 180°C. Typical applications include water treatment, chemical, marine, petrochemical and general industry. Threads conform to ISO 7.1 Sealing Threads.

Model Size(BSP) Orifice (mm) Actuator Media Pressure Media Temperature Actuator Pressure Actuator Port Size
BLS3L2B-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"
BLS3L3B-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"
BLS3L4B-DA-RT 1/2 12 DA50 Vacuum (29" Hg) to 63 Bar (10 Bar Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS3L5B-DA-RT 3/4 15 DA50 Vacuum (29" Hg) to 63 Bar (10 Bar Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS3L6B-DA-RT 1 20 DA50 Vacuum (29" Hg) to 63 Bar (10 Bar Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS3L7B-DA-RT 1 1/4 25 DA63 Vacuum (29" Hg) to 63 Bar (10 Bar Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS3L8B-DA-RT 1 ½ 32 DA75 Vacuum (29" Hg) to 63 Bar (10 Bar Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS3L9B-DA-RT 2 43 DA75 Vacuum (29" Hg) to 63 Bar (10 Bar Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS3L10B-DA-RT 2 ½ 55 DA88 Vacuum (29" Hg) to 63 Bar (10 Bar Steam) -20°C to 180°C 6 to 8 BAR 1/8"
BLS3L11B-DA-RT 3 66 DA100 Vacuum (29" Hg) to 63 Bar (10 Bar Steam) -20°C to 180°C 6 to 8 BAR 1/4"
BLS3L12B-DA-RT 4 75 DA115 Vacuum (29" Hg) to 63 Bar (10 Bar Steam) -20°C to 180°C 6 to 8 BAR 1/4"

For T port change the ‘L’ to a ‘T’.

Stainless Steel 3 way ball valve double acting pneumatic

3 way Stainless Steel Double Acting Ball Valve Pressure vs Temperature

L Port T Port

Model Actuator d A B L E F G P
BLS3L2B-DA-RT DA50 9.5 57.5 37.5 75 138 90 71 1/8"
BLS3L3B-DA-RT DA50 11 57.5 37.5 75 138 90 71 1/8"
BLS3L4B-DA-RT DA50 12 57.5 37.5 75 138 90 71 1/8"
BLS3L5B-DA-RT DA50 15 65.5 42.5 85 138 90 71 1/8"
BLS3L6B-DA-RT DA50 20 79 50 100 138 90 71 1/8"
BLS3L7B-DA-RT DA63 25 97 61 122 162 100 80.5 1/8"
BLS3L8B-DA-RT DA75 32 106.5 65.5 131 208 117 94.5 1/8"
BLS3L9B-DA-RT DA75 40 129 79 158 208 117 94.5 1/8"
BLS3L10B-DA-RT DA88 49 145 89 178 245 136 109 1/8"
BLS3L11B-DA-RT DA100 60 167 101 202 266 142 123 1/4"
BLS3L12B-DA-RT DA115 75 203 123 246 310 172 137 1/4"

Dimensions are in mm unless noted otherwise

Item Description Material
1 Cap CF8M
2 Gasket PTFE
3 Ball Seat 15%RPTFE
4 Ball 316SS
5 Body CF8M
6 Stem 316SS
7 Thrust Washer PTFE
8 O-Ring Viton
9 Stem Packing PTFE
10 Stem Ring 316SS
11 Belleville Washer 304SS
12 Nut 304SS
13 Pneumatic Actuator Aluminium

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

Product History