Datasheet Content
[{"filename":"fav_datasheet_en_307591.pdf","text":"OTHER\n LANGUAGES:\n DE, EN-GB\n\n\n\n\nHEATING | PROCESS HEAT | GAS ENGINES\n\n\n\n\n Flow adjustment valves\n FAV 50 II and FAV 50 IE\n\n\n\n Technical datasheet\n\n\n\n\nEdition 2026.03 ∙ No. 307591_EN\n\f Table of contents | FAV 50 II and FAV 50 IE\n\nTable of contents\n1 Description of functions and assortment......................................................................................................................................................................................................... 3\n 1.1 Functional description.............................................................................................................................................................................................................................. 3\n 1.2 Application example................................................................................................................................................................................................................................. 3\n 1.3 Product overview \"Flow adjustment valves\"............................................................................................................................................................................................. 3\n 1.4 Type code................................................................................................................................................................................................................................................ 4\n2 Product description............................................................................................................................................................................................................................................ 5\n3 Guidelines, standards and authorisations....................................................................................................................................................................................................... 6\n4 Technical data...................................................................................................................................................................................................................................................... 7\n5 Installation dimensions...................................................................................................................................................................................................................................... 8\n6 Mounting position............................................................................................................................................................................................................................................... 10\n7 Order numbers.................................................................................................................................................................................................................................................... 11\n8 Further information............................................................................................................................................................................................................................................. 13\n 8.1 Conversion of measurement units............................................................................................................................................................................................................ 13\n9 Glossary/List of abbreviations........................................................................................................................................................................................................................... 14\n\n\n\n\nEdition 2026.03 ∙ No. 307591_EN 2 / 15\n\f Description of functions and assortment | FAV 50 II and FAV 50 IE\n\n1 Description of functions and assortment\n1.1 Functional description 1.2 Application example\nFlow adjustment valves are used to precisely regulate flow rates and enable optimum Setting the flow rate in burner applications\nadaptation to the desired flow rates.\n PI PI\n PZL PZH\n\n 1\n\n\n 2 PI\n PZL PDZ\n M\n 3\n\n\n 4 The flow adjustment valve is installed directly upstream of the burner application. The\n flow adjustment valve can be used on both the gas and air sides. It sets the maximum\n flow rate in the gas and air lines.\n When using a flow adjustment valve in the gas line, the maximum output of the burner is\nFig. 1: Functional drawing of flow adjustment valve limited. When using a flow adjustment valve in the air line, the maximum excess air is set.\n1 Handwheel\n2 Switching shaft\n3 Hollow ball 1.3 Product overview \"Flow adjustment valves\"\n4 Hollow ball seal\n internal/internal thread\nThere is a rotating hollow ball inside the flow adjustment valve. When open, it ensures FAV 50 II\na full passage. The hollow ball is twisted by turning the handwheel or using a tool. One threaded adjustment via handwheel\ncomplete rotation of the handwheel corresponds to a 90° rotation of the ball, so that it pmax = 500 kPa / 72 PSI\ncompletely closes the passage. The flow rate can be infinitely adjusted in between. The internal/external thread\n FAV 50 IE\nscale on the handwheel shows the current position of the ball. adjustment via tool\n Fig. 2: Product overview flow adjustment valves\n Medium: Flammable gas\n Medium: Non-flammable gases / air\n\n\n\n\nEdition 2026.03 ∙ No. 307591_EN 3 / 15\n\f Description of functions and assortment | FAV 50 II and FAV 50 IE\n\n1.4 Type code\n Product variant\n\n FAV 50 II Flow adjustment taps with threaded connection (female/female thread) for installation in gas and air ducts to adjust volume flows. Adjustment via\n handwheel. A ball limits the flow according to the adjustment. Suitable for gases of gas families 1, 2, 3, other neutral gaseous media and hydrogen.\n\n FAV 50 IE Flow adjustment valves with threaded connection (female/male thread) for installation in gas and air ducts to adjust volume flows. Adjustment via\n tool. A ball limits the flow according to the adjustment. Suitable for gases of gas families 1, 2, 3, other neutral gaseous media and hydrogen.\n\n Features\n\n FAV Flow adjusting valve\n\n XX Maximum operating pressure:\n 50 = 500 kPa/72 PSI\n\n YYY Nominal size Rp:\n 02 = 1/4\" 10 = 1\"\n 03 = 3/8\" 12 = 1 1/4\"\n 05 = 1/2\" 15 = 1 1/2\"\n 07 = 3/4\" 20 = 2\"\n\n II / IE Threaded version:\n II = internal / internal thread\n IE = internal / external thread\n\n Example type code for flow adjustment valve with internal / internal thread Example type code for flow adjustment valve with internal / external thread\n\n FAV XXYY II = FAV 5005 II FAV XXYY IE = FAV 5010 IE\n FAV = flow adjustment valve FAV = flow adjustment valve\n 50 = maximum operating pressure: 500 kPa/72 PSI 50 = maximum operating pressure: 500 kPa/72 PSI\n 05 = nominal size Rp: 1/2\" 10 = nominal size Rp/R: 1\"\n II = internal / internal thread IE = internal / external thread\n\n\n\n\nEdition 2026.03 ∙ No. 307591_EN 4 / 15\n\f Product description | FAV 50 II and FAV 50 IE\n\n2 Product description\n FAV 50 II FAV 50 IE\n Flow adjustment taps with threaded connection (female/female thread) for installation in Flow adjustment valves with threaded connection (female/male thread) for installation\n gas and air ducts to adjust volume flows. Adjustment via handwheel. A ball limits the in gas and air ducts to adjust volume flows. Adjustment via tool. A ball limits the flow\n flow according to the adjustment. Suitable for gases of gas families 1, 2, 3, other neutral…
