FPB type natural gas flame arresterDetailed product description：

Performance parameters of FPB type natural gas flame arrester:
structural characteristics
The natural gas flame arrester product is designed and manufactured based on the principle of quenching subsonic or supersonic flames propagating in pipelines using the narrow gap between metal corrugated plates

Example of labeling for natural gas flame arresters



The appearance and related dimensions of natural gas flame arresters are shown in the figure on the right and the table below

Model	nominal diameter DN	D1	D2	L
				PN1.0MPa	PN1.6MPa	PN2.5MPa	PN4.0MPa
FPB-15	fifteen	18×3	57×3.5	three hundred and thirty	three hundred and thirty	three hundred and thirty	three hundred and thirty
FPB-20	twenty	25×3	57×3.5	three hundred and thirty	three hundred and thirty	three hundred and forty	three hundred and forty
FPB-25	twenty-five	32×3.5	73×4	three hundred and sixty-five	three hundred and sixty-five	three hundred and seventy-five	three hundred and seventy-five
FPB-32	thirty-two	38×3.5	73×4	three hundred and seventy-five	three hundred and seventy-five	three hundred and ninety	three hundred and ninety
FPB-40	forty	45×3.5	89×4	three hundred and seventy-five	three hundred and seventy-five	four hundred and five	four hundred and ten
FPB-50	fifty	57×3.5	108×4	four hundred and twenty	four hundred and twenty	four hundred and forty-five	four hundred and sixty-five
FPB-65	sixty-five	73×4	133×4.5	four hundred and eighty-five	four hundred and eighty-five	five hundred and fifteen	five hundred and twenty
FPB-80	eighty	89×4	159×4.5	five hundred and five	five hundred and five	five hundred and sixty	five hundred and sixty
FPB-100	one hundred	108×4	219×6	five hundred and fifty-five	five hundred and fifty-five	six hundred	six hundred and forty-five
FPB-125	one hundred and twenty-five	133×4.5	273×8	six hundred and fifteen	six hundred and fifteen	six hundred and seventy	seven hundred and twenty
FPB-150	one hundred and fifty	159×4.5	325×8	six hundred and sixty-five	six hundred and sixty-five	seven hundred and thirty-five	eight hundred
FPB-200	two hundred	219×6	377×9	nine hundred and forty	nine hundred and forty	one thousand and fifteen	one thousand and one hundred
FPB-250	two hundred and fifty	273×8	480×10	one thousand and thirty	one thousand and thirty	one thousand one hundred and fifty	one thousand two hundred and sixty-five
FPB-300	three hundred	325×8	529×10	one thousand two hundred and ninety-five	one thousand two hundred and ninety-five	one thousand four hundred and thirty	one thousand five hundred and forty-five
FPB-350	three hundred and fifty	377×9	630×12	one thousand and three hundred	one thousand and three hundred	one thousand four hundred and thirty	one thousand five hundred and forty-five

Note: 1. The connecting flange of FPB type natural gas flame arrester product is designed and manufactured according to HG20595-97 concave convex surface with neck welded steel pipe flange. Users need to choose other standard connecting flanges, please specify in the order.