2 way UV stabilised PVC ball valve with spring return pneumatic actuator (fail close or fail open). Comes with PTFE (Teflon) seats and our unique double stem seal system (standard in EPDM but also available in Viton). Great for corrosive or chemical media where traditional material such as brass and stainless steel are not suitable. Anodised aluminium actuator with visual indicator will close or open when air is lost (depending upon your choice). Commonly used in the aquaculture industry (sea water), chemical dosing, water treatment and pool filtration. Available with BSP threaded (Threads conform to ISO 7.1 Sealing Threads) and solvent weld ends (ANSI Standard designed to fit Schdule 40 & 80 pipe).

Model Size (BSP) Orifice Size (mm) Actuator Media Pressure Media Temperature Actuator Pressure Actuator Port Size
BLP54B-SR-E 1/2 15 SR50 Vacuum to 10 BAR Ambient 6 to 8 BAR 1/8"
BLP55B-SR-E 3/4 20 SR50 Vacuum to 10 BAR Ambient 6 to 8 BAR 1/8"
BLP56B-SR-E 1 25 SR50 Vacuum to 10 BAR Ambient 6 to 8 BAR 1/8"
BLP57B-SR-E 1 ¼ 32 SR63 Vacuum to 10 BAR Ambient 6 to 8 BAR 1/8"
BLP58B-SR-E 1 ½ 40 SR63 Vacuum to 10 BAR Ambient 6 to 8 BAR 1/8"
BLP59B-SR-E 2 50 SR75 Vacuum to 10 BAR Ambient 6 to 8 BAR 1/8"
BLP510B-SR-E 2 ½ 65 SR75 Vacuum to 10 BAR Ambient 6 to 8 BAR 1/8"
BLP511B-SR-E 3 80 SR88 Vacuum to 10 BAR Ambient 6 to 8 BAR 1/8"
BLP512B-SR-E 4 100 SR88 Vacuum to 10 BAR Ambient 6 to 8 BAR 1/8"

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

Spring Return PVC Ball Valve

Model DN L H A P
BLP54B-SR-E 15 110 173 138 1/8”
BLP55B-SR-E 20 115 182 138 1/8”
BLP56B-SR-E 25 130 193 138 1/8”
BLP57B-SR-E 32 142 226 162 1/8”
BLP58B-SR-E 40 160 239 162 1/8”
BLP59B-SR-E 50 173 287 208 1/8”
BLP510B-SR-E 65 250 317 208 1/8”
BLP511B-SR-E 80 270 356 245 1/8”
BLP512B-SR-E 100 310 416 245 1/8”

All dimension in mm unless shown otherwise. 

Spring Return PVC Ball Valve

Number Item Material
1 Shaft UPVC
2 Ball UPVC
3 Body UPVC
4 Connection UPVC
5 Union UPVC
6 Seat PTFE
7 Double Stem Oring EPDM or Viton
8 Oring EPDM or Viton
9 Oring EPDM or Viton
10 Retainer UPVC
11 Mount UPVC
13 Mounting Bracket 316 Stainless Steel
15 Double Acting Actuator Anodized Aluminium

Size 1/2" to 4" BSP
Body UV stabalised PVC
Seat PTFE
Pressure 10 BAR
Temperature Ambient
Actuation Spring Return Pneumatic

Product History