4" BSP Threaded PVC Backnut

Material: PVC

Manufacturing standards: BS21, ISO727, ISO7-1, DIN-2999, ISO9001, ISO14001

Jointing process: BSP thread (with use of thread sealant such as PTFE tape).

Maximum working pressure: 9bar

Manufacturer: Effast*

Operating temperature: 0-60°C

*(We usually have plenty of these in stock; however, if we have a sudden large demand and run short, an alternative manufacturer's part, with the same specifications and as close to the same dimensions stated above, may be supplied in its place)

The pressure rating of PVC pipe and fittings reduces with increasing temperature. To calculate the actual pressure rating of the product at each temperature, the noted pressure rating must be multiplied by the 'de-rating multiple', as explained on our PVC category page.

The temperature derating table of this fitting is as follows:

Temperature (°C)	Pressure Rating (bar)
20	9
30	7.2
40	5.2
50	3.5
60	1.9

PVC pipe has a recommended operating temperature of 0 - 60° centigrade (32 - 140°F).

This 4" FBSP backnut is compatible with 4" male BSP threaded fittings, which will thread into the female BSP. It is not compatible with metric PVC pressure pipes or plain fittings; however, it is compatible with the 4" male BSP threaded end of a metric plain to threaded fitting.

PVC (or PVCU) is one of the most widely used plastics in general industry. Its ease of installation, rigidity, WRAS approval, and low price point compared to many other plastics makes it ideal for applications such as:

• Factories and general process industries
• Swimming pools and spas
• Aquaculture, hydroponics, and aquaponics
• Agriculture and irrigation
• Water processing and treatment

In addition, PVC pipe also finds its way into many domestic applications, including:

• Salt and freshwater aquaria
• Ponds and water features
• Home pools, hot tubs, and spas
• Micro irrigation

The current stock status of this item is:

IN STOCK for immediate dispatch by carrier.

Delivery options for this item are:

• Next Working Day
• 2-3 Working Day

For more information, including our order cut-off times and postcode availability, please see our delivery info page.

This 4" PVC FBSP backnut is eligible for return - please see our returns page for more information.