Specifications Overview:
The document provides specifications for four housing models: 443S, 437S, 447S, and 456S. Each model has specific port sizes, temperature limits, flow rates, and construction materials.

Port Sizes:
- NPT Port: 443S has a 2” port, while 437S, 447S, and 456S have 3” ports.
- Drain and Gauge Ports: All models have 1/4” ports.

Temperature and Flow Rate:
- Maximum Temperature: All models can withstand up to 200ºC.
- Maximum Flow Rate: Ranges from 150 m³/hr for 443S to 765 m³/hr for 456S.

Materials of Construction:
- Body and Internals: Made of 316L Stainless Steel (SS).
- Gaskets: Made of Viton.

Principal Dimensions:
- Dimensions vary across models, with the largest being model 456S.
- Volume ranges from 16,000 cc for 443S to 65,000 cc for 456S.

Accessories:
- Standard and Nitrile Gasket Sets are available for each model, with specific codes.

Filter Element Codes:
- Disposable Element Codes are provided for each model, with the number of elements ranging from 3 to 16.

Principal Specifications:
- The document highlights that these are stainless steel vacuum pump exhaust filters.

Notes:
- Material abbreviations used include AL for Aluminium and SS for 316L Stainless Steel.