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PP Bag Housings

1. Product Features

1.1. Top seal structure: Referring to the following illustration, seal gasket is top positioned. Instead of applying the closing torque force directly to the gasket, it is indirectly applied to the dome-shapped Compression Seal Lid, which in turn virtically press down the gasket. This unique structure completely eliminates the destructive torque force applied to the gasket when the Lid Assembly is opened and closed;

1.2. Anti-ultraviolet ray formula: Anti-ultraviolet ray additives are added into Polypropylene resin before injection molding. The new formula protects the housing from deterioration under strong sunlight when installed outdoors;

#2 Bag Housing

2. Standard Package

2.1 PP-HOUSING Standard Package: Polypropylene housing shell, Buna-N gasket, Polypropylene tripod stand assembly, Polypropylene lid assembly, Polypropylene strainer basket, and Polypropylene filter bag holder.

2.2 HPPCARTRIDGE Standard Package: Polypropylene housing shell, Buna-N gasket, Polypropylene tripod stand assembly, Polypropylene lid assembly, Polypropylene cartridge base plate with Buna-N gasket.

2.3 Metal Alternative Standard Package: Stainless steel housing shell, Buna-N gasket, stainless steel lid, stainless steel strainer basket, stainless steel tripod stand assembly, and stainless steel filter bag holder.

3. Transportation

3.1 Fragile: PP-HOUSING are made of FDA Grade Polypropylene, and are fragile in nature. Rough handling will cause physical damages to the housings.

3.2 Flammable: Polypropylene is flammable in nature. No smoke and fire allowed anywhere near the products.

3.3 Shipping: PP-HOUSING, filter housings are shock mounted in the packing cartons, they can stand upward or lay on side during transportation. When moving about a PP-HOUSING, or HPPCARTRIDGE HOUSING that is already in commission, the housing must be completely drained first, and stand upright during transportation.

4. Installation

4.1 Mounting: The Polypropylene Tripod Stand Assembly is designed to hold the filter housing upright. It is NOT designed to withstand torque force, such as tightening and loosening the Lid Assembly. In most applications the housings should be mounted on pipelines, or use our stainless steel tripod stand assembly to withstand torque force;

4.2 Leakage Prevention: The single seal design of PP-HOUSING effectively prevents leakage at/under rated operating pressure. DO NOT over-tighten the Lid Locking Ring Handle, as excessive force may crack the Lid Locking Ring Handle, damage the gasket seal and cause mechenical failure;

4.3 Pipeline Connection: The pressure rating of the pipeline should be no less than the rated housing pressure. The inlet and outlet connection of PP-HOUSING is standard 2 inches (50mm) BSP;

4.4 Vent Valve: Vent Valve installation is strongly recommended by SCC for system overloading protection.

4.5 Gasket Seals: Gaskets must be installed. For safety reason, use genuine SCC seal gaskets only.

4.6 Accessories: Accessories like Pressure Gauge, Inlet/Outlet Valves, Drain Valve and Vent Valve are essential for safe operation. If you do not order essential accessories from SCC, it is your responsibility to acquire and install these necessary accessories with good quality;

4.7 Vent Valve Installation: Vent Valve and Inlet Pressure Gauge should be installed on top of the dome-shapped Compression Seal Lid. The Outlet Pressure Gauge should be installed on the lower Gauge Mount, located in front of the housing shell, opposite to the inlet, beneath the upper Gauge Mount, or it can mounted on outlet pipe. Make sure that Vent Valves, Inlet and Outlet Gauges must be securily installed. It is extremely dangerous to operate pressurized filter housings without or with wrongfully installed Vent Valves;

4.8 Lid Assembly Installation: Steadily place the dome-shapped Compression Seal Lid Assembly on top of the housing shell. Cross fist-tap the Locking Ring Handle to line up the Locking Ring’s female threads with housing shell’s male threads correctly, then slowly tighten the Locking Ring Handle. Under any circumstances, DO NOT tighten the Locking Ring Handle by excessive force, before the threads are correctly lined up, or over-tighten the Locking Ring Handle, as it may cause seal and mechanical failures, and may even resulte in serious jobsite injuries.

#5 Bag Housing

5. Flushing & Cleaning

5.1 Before the first time commissioning, flush housing interior with clean hot water, then dry it up by compressed air. This will assure the removal of dust that may have accumulated during transportation and storage. The same procedure should be observed for routine filter housing cleanings.

6. Filter Element Replacement

The following operating procedures must be strictly observed for safe operation.

6.1 System Off. Turn off and lock the Pump, close Inlet and Outlet Valves;

6.2 Pressure Release. To prevent injury, make sure that the Vent Nozzle points at a safe direction. Open Vent Valve SLOWLY to depressurize the housing;

6.3 Open Lid Assembly. Must make sure that the interior pressure is zero before SLOWLY loosening up the Locking Ring Handle and opening up the Lid Assembly;

6.4 Remove Used Filter. It is important to dispose used filters according to local environmental regulations;

6.5 Basket Inspection. Inspect for any basket damages. Warning: Operating without Basket or with damaged Basket will cause major filter failures. Basket is a component that supports the bag filter under pressure. A bag filter is NOT designed to resist pressure by itself;

6.6 Install New Filter. For PP-HOUSING, filter bags must be completely inserted into the Basket, until it touches the bottom of the Basket; For HPPCARTRIDGE HOUSING, the SOE end cap of cartridge must be insert completely into the Cartridge Seating Plate to seal;

6.7 Gasket Inspection. Choose chemically compatible Gasket for specified operation. Replace worn Gasket immediately with genuine SCC gaskets;

6.8 Reinstall Lid Assembly. Pay special attention when reinstall the Lid Assembly. Steadily place the dome-shapped Compression Seal Lid Assembly on top of the housing shell. Cross fist-tap the Locking Ring Handle to line up the Locking Ring Handle’s female threads with housing shell’s male threads correctly, then SLOWLY tighten the Locking Ring Handle. Under any circumstances, DO NOT tighten the Locking Ring Handle by excessive force, before the threads are correctly lined up, or over-tighten the Locking Ring Handle, as it may cause seal and mechanical failures, and may resulte in serious jobsite injuries;

6.9 Open Inlet Valve. SLOWLY Open the Inlet Valve while keepING the Vent Valve open to bleed trapped air out. Then turn Pump back on;

6.10 Close Vent Valve. Cover the Vent Valve Nozzle with a cup to avoid spoilage. When the first drip of liquid is observed from the Vent Valve Nozzel, close the Vent Valve. At this point, the housing is fully bled;

6.11 SLOWLY Open Outlet Valve. Observe for leaks. Shall leakage takes place, shut off Inlet Valve and Pump, start over again from Item 6.8.

7. Need to Knows

7.1 Differential Pressure: It is important to check pressure differential regularly during operation. Operating above the recommended 1.10 kg/cm² filter replacement pressure differential will negatively affect flow rate, reduce production efficiency.

7.2 System Failure: If pressure differential suddenly drops, stop operation immediately and check for possible seal failure and/or filter rupture.

7.3 Bypass: Filtration brings about pressure differential. Pressure differential will gradually build up as filters retain more and more contaminants. No pressure differential and/or no pressure differential increase means no actual filtration is taking place. Stop operation and check for possible seal failure and/or filter rupture.