Pressure decay testing of underground storage tank systems has identified the joint between the tight-fill adaptor and the nipple or tank riser as a persistent leak point.Considerable movement takes place along the hose while the fill elbow is connected. Walk-downs and changes from one compartment to another move the hose across the pavement, rotating the elbow along with it. The result can be a loosening of the adaptor. As the adaptor backs off, the seal between it and the nipple is relaxed and a leak path is created allowing vapors to escape to the atmosphere. Vacuum-assist dispensing systems can aggravate this situation due to the slight pressurization of the UST.
The 61SA Swivel Adaptor mates with 4" top-seal delivery elbows and features a top section that rotates with hose movement while the bottom section remains securely in place maintaining seal integrity.
The 61SA Swivel Adaptor mates with 4" top-seal delivery elbows and features a top section that rotates with hose movement while the bottom section remains securely in place maintaining seal integrity.
Features
- Dual Seals – ensure a vapor and liquid-tight seal
- Conductive, Self-Lubricating Retaining Rod – ensures maintenance-free, reliable service life
- Rod - ensures maintenance-free, reliable service life
- Same Internal Dimension as Standard 633T Adaptors – to minimize pressure drop and maximize flow rates for quick product delivery
Materials
Adaptor: bronzeBase: bronze
Retaining ring: conductive nylon
Set screws: stainless steel
Seals: Nitrile Rubber
