Pipe & Hose Fittings (P, PS, PL)

OmegaOne manufactures pipe fittings and adapters made to the NPTF (National Pipe Thread Fuel) and NPSM (National Pile Straight Mechanical) standards defined by ANSI B 1.20.3 and SAE Straight Thread fittings as defined by SAE J514. Standard NPT/F pipe fittings are the most basic level of thread connection. All hose barb and push on style hose fittings are manufactured from 316 Stainless Steel.

Taper Threads

Pipe fittings and adapters use a tapered thread connection forming a mechanical seal. The seal is formed as the male and female threads are tightened together forming a dry seal. The thread angle on an NPT and NPTF thread is 60 70 that have flattened peaks and valleys which is referred to as a Sellers form. OmegaOne manufactures to the NPTF standard, which is designed to seal better than NPT.

Standard pipe threads offer the most basic connection and are still widely used. Pipe fittings are ideal where systems require high pressure and high temperatures. There are many limitations with pipe fittings. It is not recommended that these fittings be repeatedly assembled and disassembled. The threads are not designed for repetitious use and are not as durable when there is a lot of vibration in the system. Pipe fittings do not allow for adjustability that straight thread fittings offer.

Straight Threads

SAE straight thread fittings, also referred to as O-Ring Boss (ORB) are defined by SAE J514. These fittings have parallel threads and use an O-ring to completely seal. The seal of the fitting occurs when the O-ring is compressed during tightening. Parallel thread fittings are more common than taper thread fittings. Elbow and tee fittings are manufactured with an adjustable bulkhead nut, allowing the fitting position to be adjusted directionally during installation.

Straight thread fittings offer better reusability because they can be removed to service the system and then easily reinstalled. When removing and reassembling a straight thread fitting replacing the O-ring is recommended to ensure the integrity of the fitting in the system. Straight thread fittings perform better in systems with higher vibration than pipe thread fittings.

Pipe Swivel (NPSM)

The NPSM is a female pipe swivel fitting using a parallel thread to guide a seal on a 30 70 cone inside the swivel nut creating a metal to metal seal. The NPSM swivel is designed to mate only with any NPT or NPTF pipe thread fitting as long as the male thread has a 30 70 champher on the ID of the thread. OmegaOne manufactures our pipe thread fittings with the mating champher to ensure universal usability of our taper pipe thread fittings.

OmegaOne carries an extensive inventory of standard and non-standard stainless steel pipe fittings (P series stainless steel fittings). We carry common sizes and configuration as well as uncommon “jump” sizes. In addition, OmegaOne carries NPSM, stainless steel pipe swivel fittings (PS series pipe fitting) and stainless steel hose barb, “push-on” style fittings (PL Series fittings).


OmegaOne Airway SAE Parker SSP Description
207ACBH ... ... ... AAC Anchor Coupling
P-GCU 3474 ... F5HA0 GCU Male NPT to Male Straight Thread
P-HC 5000 140138 GG HC Coupling - or - Union
P-HN 5404 140137 FF HN Pipe Nipple/Hex Nipple
P-LHN ... ... ... ... Long Pipe Nipple
P-RA 5405 140139 FG RA Adapter/Reducing Adapter
P-PTR 5406 140140 PTR PTR Bushing/Pipe Thread Reducer
P-HP 5406-P 130109E HP HP Hex Head Plug
P-CP 5406-HP 130109N HHP CP Hollow Hex Pipe Plug
P-MM 5500 140237 CR MM 90° Male Pipe Elbow
P-MF 5502 140239 CD MF 90° Street Elbow
P-MF-45° 5503 140339 CD45° MF45° 45° Street Elbow
P-FF 5504 140238 DD FF 90° Female Elbow
P-FF-45° 5505 140338 DD45° FF45° 45° Female Pipe Elbow
P-MMM 5600 140437 RRS MMM Male Pipe Tee
P-FMF 5602 140424 MRO FMF Male Run Tee
P-FFM 5604 140425 MMS FFM Male Branch Tee
P-FFF 5605 140438 MMO FFF Pipe Tee
P-FSU ... ... G5HG5 ... Female to Female Hex Pipe Coupling
P-GCM 6401 090109B F50F GCM Pipe to Straight Thread Male Adapter
P-GCF 6405 140425 F50G GCF Pipe to Straight Thread Female Adapter
P-GP 6408 090109A P50N GP Straight Thread Plug
P-CGP 6408-H 090109B HP50N CGP Hollow Hex Straight Thread Plug
P-GCFS 6410 ... F50G5 GCFP Male to Female Straight Thread
P-AEOG 6805 140425 AOEG GEFP 90° Straight Thread Female Elbow
P-GEF ... ... ... ... Female Elbow
PS-C 1404 140130 ... ... Male Pipe Adapter
PS-FC 1405 140131 ... ... Female Pipe Adapter
PS-FE 1502 140231 ... ... Female Pipe Elbow
PS-ME 1501 140230 ... ... Male Pipe Elbow
PS-ME-45 1503 140330 ... ... Male Elbow Pipe
PL-JS 2111 ... ... ... Push-On Hose Barb
PL-MP 2113 ... ... ... Push-On Hose Barb
PL-TX 2116 ... ... ... Push-On Hoes Barb
M2HC ... ... ... ... Hose Barb Connector

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