- Installed in vapour plumbing as safety devices to relieve pressure or vacuum build up when vapour systems are blocking during loading/unloading
- 4″ TTMA flange mounting (Aluminum)
- Stainless steel shaft and buna seals
|VRP3500||Outbreathing vent (opens at 1 PSI pressure)|
|VRV3501||Inbreathing vent (opens at 1.5" Hg vacuum)|
Founded in 1973, Ontario Hose Specialties Limited has grown from a one man operation to a well-established four-branch supplier of industrial hose and hose products, primarily in Ontario, Quebec and the Maritimes.
For over 40 years, the company has been a significant presence in the Canadian industrial hose market, producing and distributing a huge variety of industrial hoses with differing diameters and configurations as well as all related fittings, nozzles, and clamps.