Brass Porous Metal Muffler, 1/8 NPT, 1.125 Inch Long

Brand Ingersoll-Rand Industrial US	Brand Ingersoll-Rand	Pack Size 1.00	UOM EA	Hex 0.44	Length 1.13	Materials Brass	Supplier Part Number 20312-1	Thread 1 1/8 NPT	Product Weight 0.04 lbs	Alternate Part Numbers Alternate Part Number C1AX88

Product Questions & Answers

got a 1/8 npt exhaust port on an air valve. is this the right thread and how big is it overall

Question by: Neil Y on Oct 9, 2025, 10:39 AM

It uses a 1/8 NPT male thread and the muffler is 1.125 inches long overall. The hex is 0.44 inches, so you can get a wrench on it for installation.

Answer by: Customer Support on Oct 10, 2025, 5:07 PM

Model Number	Materials	Thread 1	Length	Hex	Price	Buy Now
P28	Zinc Plated Steel	1/4 NPT	1.20	0.56
20312-1	Brass	1/8 NPT	1.125	0.44