Block Protector

The Block - Blow Protector is a product designed to shut-off an air supply if a sudden excessive air flow starts in a hose due to rupture or other situations such as fitting or coupling failure. The blow protector will stay open during normal working conditions.

The Block Valve offers a simple and efficient protection to pneumatic systems in the event of a broken compressed air hose or pipe. The couplings outer housing material is aluminium and all threads are female BSP. The air supply is immediately shut off by the block product, should the volume of air exceed a set value. This "value" is factory preset and set to allow normal air consumption when using air tools.

Should the air consumption exceed the set value, e.g. the air-line is severed, and then the internal piston instantly shuts off the main flow. An integral bleed hole allows some air to flow through. This enables the line pressure to automatically reset the product once the main line break is repaired. Block couplings complies with ISO4414

When selecting a Block Coupling consider:
  1. Hose or pipe diameter (mm)
  2. Thread Size, BSP
  3. Air Flow (l/sec)
Product  Part No.    Max Air Flow Shut off
Air Flow
Length
(mm) 
Ø (mm) Inlet
Thread
BLOCK 08 8202 0100 70  8 L/s 10 L/s 1-10  6.3-10 1/4 BSP 
BLOCK 10  8202 0100 71  15 L/s  20 L/s  1-20 10-16 3/8 BSP 
BLOCK 15  8202 0100 72  35 L/s  46 L/s  1-20 12.5-19  1/2 BSP 
BLOCK 20  8202 0100 73  48 L/s  59 L/s  1-10  20-25  3/4 BSP 
Block Protector

Block Protector

Blow Valve

Blow Valve

Blow Protector Schematic

Blow Protector Schematic

BLOCK PROTECTOR GROUP BLOW BLOCK PROTECTOR BlowProtectorBLOCK B
sales@air-mech.co.nz