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KEITH SPECIALTY STORE 6791 Route 119 N, Marion Center, PA  15759-7216 U.S.A. phone: +1 724-397-8838   orders: +1 800-705-8838 fax: +1 724-397-2228 hours (ET): 8:00a-6:00p Monday-Friday, 8:00a-4:00p Saturday All items are brand new stock - not used - not remanufactured - not liquidation

insert fittings

table of contents for items on this page

Inside diameter (i.d.) insert fittings are used in polyethylene (PE plastic) waterlines in cold water or DWV applications.
** Do NOT use for natural gas, hot water, copper-tubing-sized [CTS] PE lines, or any unapproved application.**
Please read waterline manufacturer's installation instructions.

Outside diameter (o.d.) insert fittings are available only in brass in our regular stock.
They are used with other materials such as rubber hose, poly tubing, and vinyl tubing which are sized by outside diameter.

All regular stock insert fittings are on this page.  Threaded fittings are on other pages including brass,chrome,copper,cpvc,galvanized steel, andgarden hose.

PVC fittings are gray-colored (except schedule-40 transitions which are white).  Nylon fittings are a somewhat translucent white color and generally more durable.
PVC, Nylon, and brass are suitable for most potable, cold water supplies and pressures.  Galvanized steel is also suitable, but will corrode in some environments. 
Stainless steel may be required where connecting to a municipal water supply.  Always verify requirements with your water supplier.

Each insert end has "barbs" or ridges which are angled to allow the barbed end to insert into the tubing but resist retraction. 
They also provide a surface against which hose clamps can compress the tubing to form a tight seal. 
Hose clamps (usually one or two per insert) are used to secure the fitting inside the line or tubing.

Tip: To facilitate inserting or removing fittings, first use a propane torch to heat waterline gently until it is just hot enough (about 150-185°F) to allow it to stretch a little.  Heat the end as far back as the fitting should be once fully inserted. Caution: wear protective clothing and face shield to avoid severe injury.

Tip: Slide two pipe clamps facing in opposite directions over the waterline end before inserting the fitting.  After inserting the fitting, position clamps side-by-side but 180° out of alignment. Tensioning screws will face in the same direction but on opposite sides of the pipe.  Tighten clamps while pipe is still warm.  Do not over-torque.

ins =

insert

mipt =

male iron-pipe-size thread

fipt =

female iron-pipe-size thread

id =

inside diameter

od =

outside diameter

x =

by (type and/or dimension)

fittings sized by inside diameter

insert x insert couplings

insert x male thread adapters [king nipples]

insert x female thread adapters

insert x insert reducing couplings

insert x insert 90 degree ells

insert x insert 90 degree reducing ells

insert x male thread 90 degree ells and reducing 90° ells

insert x female thread 90 degree ells and reducing 90° ells

insert plugs

insert x male thread reducing adapters

male thread x insert reducing adapters

insert x insert x insert tees

insert x insert x insert reducing tees

insert x insert x male thread reducing tees

insert x insert x female thread tees and reducing tees

insert adapters (hub x insert) - transition from schedule-40 PVC pipe to waterline

fittings sized by outside diameter

insert fittings for vinyl tubing, poly tubing, and rubber hose

• high-density polyethylene black plastic water pipe
• hose clamps
• garden hoses, lawn faucets, yard hydrants
• brass and PVC ball valves, stop, gate, shutoff, and boiler drain valves
• rubber fittings