Stemar, Inc. has the largest inventory of "low pressure" pipe plugs and "high pressure" pipe plugs, for rent or purchase, anywhere in the USA. From less than 1" all the way up to 96", Stemar, Inc. has the plugs you need in stock for pipeline stoppage, pipe flow diversion, pipeline acceptance testing, and pipeline leak locating. 

Stemar, Inc. also offers a complete  manhole to manhole "air test package" or "water test package" that's easy to use and Contractor Ready.

Stemar, Inc. has the underground solutions necessary to solve difficult applications in tough locations.

We will ship the same day or deliver anywhere in the United States and most places internationally.

Whether repairing or adding to existing manholes, relocating a sewer line, or rebuilding a structure underground... Stemar wastewater gravity bypass systems are field tested & approved methods of diverting live sewer flow.

Stemar's Bypass Systems use gravity with no need for pumps or other expensive machinery & made be used in a variety of bypass hose or pipe sizes to provide for minimal flow reduction. Custom options are always available, call us.

Designed for complete acceptance testing on joints of various types of pipe including deflected (up to 5%) fiberglass and plastic pipes.

Stemar joint testers are rented and sold as complete units with everything required to perform a joint test barring an air compressor and/or water source to inflate the bladder and pressurize the test area.

Our joint testers may be used for both hydrostatic or pneumatic (air, nitrogen, or any non-toxic non-flammable gas) tests up to 100 psi.

Custom options are always available.

Stemar rents, sells, and repairs 2", 3", 4" and 6" trash pumps and all of the necessary appurtenances to perform a complete sewer bypass job and/or live sewer replacement job; plugs, bypass, hoses, pumps, confined space entry equipment, trench safety equipment, traffic control, and more.

All Stemar rental pumps are maintained and vacuum tested before being returned to our rental fleet to ensure our pumps are Jobsite Ready.

Stemar has been a Speed Shore distributor for over 60 years. Stemar's hydraulic shoring service is perfect for emergency spot repairs, pipe laying, sewer lateral connections, pot holing for sewer liners, utility inspections, or any number of jobs involving trenched excavations.

We deliver our professionally maintained equipment same day almost anywhere in Southern California. 

Need to enter a manhole, vault, storage tank, silo, or other confined space? Stemar offers a complete line of Confined Space Equipment:

We rent, sell, and repair/recertify all the equipment necessary to properly enter a confined space including gas monitors, tripods, winches, harnesses, davit arms, portable air blower, and SCBA equipment.

Premium brands with industry leading technology.

No fuel mixing required.

Ideal for small scale compaction jobs.

Low cost, low effort, high quality results.

"Squeeze & Pop" cutting principle pipe cutters. Absolutely the best for work in the trench or with loose pipe. Mechanical cutters for smaller pipe sizes, Hydraulic cutters with a remote pump for ease and safety on larger pipe sizes. Cutter does NOT rotate around the pipe, chain squeezes and pops the pipe for a clean cut, all materials are cut with the same cutter, same wheels, no parts changing necessary.

Stemar Equipment is a proud distributor and repair center for Rice Hydro hydrostatic test pumps. Our pressure fed models are small, dependable, and easy to use for testing lines up to 16 inch in diameter up to 450 PSI. Our gravity fed versions are rented complete with pump, suction hose, water tank, and pressure hose for filling and testing larger pipelines at 32 GPM up to 300 PSI.

Stemar pipe tongs are the most efficient way to handle your pipe or cylindrical objects for water pipe laying, sewer line work, gas main laying, or any truck loading/unloading. Our pipe tongs are a proven labor saving tool and usable with virtually any crane or excavator and they attach and release automatically for complete safety and ease of use. Stemar Pipe Tongs are manufactured in southern California with the highest quality certified materials and manufacturing processes in fabricated high tensile steel for pipes ranging from 4" to 48". Custom options are always available given enough lead time.

Stemar offers a complete line of Air Tools, for concrete breaking and demolition, asphalt breaking, clay and dirt digging, and drilling holes for both rental and sale. We also offer a quick turnaround on all Air Tool repairs.

Air powered tools are known for their dependability of continuous use due to having fewer moving parts and a simple design. Less breakage, less downtime, reduced danger of electric shock and fire hazards. They cannot be damaged from overloading, stalling, or filling with the wrong type of fuel.

We carry in stock a large variety of industrial grade flooding hoses, discharge hoses, double jacket fire hoses, garden hoses, suction hoses, hydraulic hoses and more. 

Our fittings availability include NPT/IPT, NPSM, NST/NFT, CAMLOCK, VICTAULIC, BAUER, and more.

Custom sizes, lengths, fittings, quantity break pricing always available on request. 

Easy to start, sturdy and reliable, longer service intervals, and self tensioning belts... Stemar's Husqvarna K970 cutoff saws have a cutting depth of 5" to 6" depending on guard/blade size and are capable of cutting almost any type of material with the appropriate blade pairing. 

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Stemar rents, sells, and repairs Husqvarna K770 and K970 power cutters.

Manhole rings and channel forms for pouring manhole bottoms, elbow deflectors and tremie hose to assist your concrete delivery in those tight spots. Tremie hose for sale only, everything else available for rent, sale, and/or repair.

We carry Multiquip generators, 3.6kW and 6kW for both rent and sale. Multiquip generators are made with both long-lasting quality and ease of maintenance in mind. Heavy duty pipe frame construction, superior voltage regulators, brushless design, and industrial grade engines to ensure your expensive power tools are not damaged by dirty power from a cheap generator. We have seen MQ generators withstand over 20 years of continuous use that are still going strong, contact us if you are interested in a used rental unit!

Deflection gauges (also known as pipe mandrels) are used to test sewer pipes for deflection (out of roundness, when the pipe is squished or deformed) per ASTM specifications D3034 and F679. We carry in stock the fixed steel / birdcage style mandrels which are sized to within .02" to meet ASTM requirements.

We rent and sell a large variety of traffic control equipment including but not limited to: Cones, Delineators, Barricades, Barricade Flashers, Road Signs, Sign stands, Cone Signs, Cone bars, Manhole guard rails, Safety fence, and more.

Custom signs are also available with enough lead time.

Stemar traffic plates are designed to safely cover open excavations when work is not being performed in order to open up the roadway or jobsite to vehicle traffic. All Stemar rental plates are made of 1" thick ASTM A-36 grade steel with anti-skid protection (either paint on or CALTRANS approved weld pattern meeting CAT DOT Test 32, friction factor of .35 or greater)

Stemar specializes in emergency / ASAP emergency deliveries of these plates along with any necessary asphalt, trench safety equipment, and/or hand tools the job requires.

Stemar carries 6'x8', 8'x8', 6'x12', and 8'x14' aluminum shields for rental. These are turnkey products; cut the trench, drop them in, and pump them up just like hydraulic shoring.

Stemar carries the largest inventory of screw jacks in Southern California. Each trench brace (screw jack) has a ball socket joint that tilts for added safety on angular mounting. Whether shoring a trench, holding up a deck, or using to bracing a structure these screw jacks are a time tested construction method that allows competent and experienced contractors to save time and money against other solutions.

Cleaning balls, also known as Jet Balls or Pipe Pigs, are an inexpensive method for cleaning out new lines prior to line acceptance testing or cleaning grease out of existing lines. Commonly used as a less expensive and less damaging option than jetting trucks, these balls are made of natural rubber with eyebolts at each end for tethering and spiral grooves to create a high-power spraying action in the pipeline. We can rent these balls as a complete kit with rope reels and rope jacks on each side of the pipe or by themselves.

Our affordable and easy to use in-stock magnetic locators can be used to find manhole covers, mag & PK nails, marker magnets, corner markers, and curb & valve boxes with varying levels of sensitivity and volume. 

If interested in purchasing something with more capability (hazmat drums, reinforced septic tanks, steel enclosures, vaults, culverts, pipe joints/transitions, well casings) just give us a call.