I have a commercial T & S Brass Faucet that leaks. I have replaced the washers with different sizes ( 0, 00, etc) and still drips. I think I'll try the Beveled type, but would love for someone to tell me the exact washer. The valve seat looks ok but....? I dont have a model # but it is in a commercial kitchen, Swivel type, two levers ( hot, cold) 8 " center to center. T & S Brass is all I can read on faucet. any suggestions?

Comllenhas been producing high-grade commercial kitchen appliances from the beginning, and it never stopped seeking glory. Its products are praised by the users who think that the company focuses on performance and durability which most commercial kitchen owners want.
Especially the Commercial Kitchen Sink Faucets are the highlights of the company. One of its unique commercial faucets is the Comllen Kitchen Faucet.
The ease of installation is commendable as well as the single handle control. You can use one handle to control the water flow and the water temperature. The handle makes your work a lot easier when you have your other hand occupied. The stainless design along with the brushed nickel finish is also noteworthy. The head can be rotated at a 360-degree angle allowing you to have options while working. It is a well-rounded product.
The Feature and Specification of Comllen sink faucet are given below:
Feature Analysis
360 Degree Head RotationThe head of the faucet can be tilted to 360° positions. So, you can get the water stream in any direction you want to.
One Handle ControlIt has a simple one handle operation. You can control the water flow as well as the temperature with this one handle.
Dripping Free TechnologyIn our Comllen Commercial Hot and Cold Sink Faucet review, we feel delighted to mention this unique dripping free system that reduces water wastage while helping to reduce energy bills.
Easy InstallationThe faucet can be mounted and installed pretty easily. It comes with a one-hole mounting feature which makes it easy for the user to install this faucet.
Specifications

• Dimensions (L x W x H):15.8 x 7.5 x 2.1 inches
• Adjusted Weight:2.85 Pounds
• Colors Options Available:Brushed Nickel
• Mount Options:Surface Mounting
• Body Material:Brass
• Handle Type:Single Handle
• Body Design:Contemporary
• Coating Medium of the Faucet:Brushed Nickel
• Warranty Provided:Limited Lifetime

follow this steps and fix it. God bless you
f a faucet leaks, replace seals and gaskets . If a shower head leaks, create a better seal or replace seals.
If a sillcock wears out, replace the washers .
If a compression faucet drips from the spout, replace the washer and/or the seat .
If a faucet leaks from the handle, replace O-ring(s), replace the packing washer, tighten the packing nut, or replace worn packing, depending on the valve type .
If a ball or cartridge faucet leaks from the collar, replace worn O-rings .
If a disk faucet leaks around the base or has reduced flow, replace cracked or pitted disk assembly or worn inlet seals .
If there is water under the sink, tighten the faucet-set locknuts under the sink. You also can replace putty or a gasket, replace a worn faucet, or replace leaky supply tubes
If the aerator leaks around the edge, replace the washer in the aerator
If the spray hose leaks or has reduced flow, replace the O-ring on the diverter valve, replace a worn washer at the base of the spray head, or clean the diverter valve and spray head

make this steps and fix it. God bless you
f a faucet leaks, replace seals and gaskets . If a shower head leaks, create a better seal or replace seals .
If a sillcock wears out, replace the washers .
If a compression faucet drips from the spout, replace the washer and/or the seat .
If a faucet leaks from the handle, replace O-ring(s), replace the packing washer, tighten the packing nut, or replace worn packing, depending on the valve type.
If a ball or cartridge faucet leaks from the collar, replace worn O-rings .
If a disk faucet leaks around the base or has reduced flow, replace cracked or pitted disk assembly or worn inlet seals
If there is water under the sink, tighten the faucet-set locknuts under the sink. You also can replace putty or a gasket, replace a worn faucet, or replace leaky supply tubes .
If the aerator leaks around the edge, replace the washer in the aerator
If the spray hose leaks or has reduced flow, replace the O-ring on the diverter valve, replace a worn washer at the base of the spray head, or clean the diverter valve and spray head

make this steps and fix it. God bless you
f a faucet leaks, replace seals and gaskets . If a shower head leaks, create a better seal or replace seals
If a sillcock wears out, replace the washers
If a compression faucet drips from the spout, replace the washer and/or the seat
If a faucet leaks from the handle, replace O-ring(s), replace the packing washer, tighten the packing nut, or replace worn packing, depending on the valve type
If a ball or cartridge faucet leaks from the collar, replace worn O-rings
If a disk faucet leaks around the base or has reduced flow, replace cracked or pitted disk assembly or worn inlet seals
If there is water under the sink, tighten the faucet-set locknuts under the sink. You also can replace putty or a gasket, replace a worn faucet, or replace leaky supply tubes
If the aerator leaks around the edge, replace the washer in the aerator
If the spray hose leaks or has reduced flow, replace the O-ring on the diverter valve, replace a worn washer at the base of the spray head, or clean the diverter valve and spray head

These faucets can leak in three different places:

1. Internally at the valve seat
   You'll see water dripping from the spout. This means the rubber washer is worn or damaged. To replace the washer, remove the decorative cap from the handle. Remove the retaining screw and pull off the handle. Remove the decorative cover, called an escutcheon, if there is one. Unscrew the packing nut counterclockwise. Unscrew the valve stem and remove it. Remove the screw that holds the rubber washer in place. Because these washers come in many shapes and sizes, you'll want to take the old one to the hardware store and buy an exact replacement. Be sure to buy two washers so you'll have one for the other valve. Replace the washer and reassemble the faucet.
   
2. Around the handle
   If you see water coming from below the handle, the packing nut is leaking. Older faucets have a string-like graphite packing material wrapped around the stem. Newer faucets use an O-ring. First try tightening the packing nut clockwise... about one-half turn. If this doesn't stop the leak, remove the packing nut and replace the packing or O-ring; then reassemble the faucet. If the valve is using the graphite packing material, it might be a clue that you should shop for a new faucet.
   
   
3. Between a pivoting spout and the body
   The spout might be held in place with a packing nut, similar to the faucet stem, or it might have a nut at the top of the spout. In either case, remove the spout and replace the packing material or the O-ring seal. Then reassemble the faucet.

Single lever faucets also are known as "washerless" faucets. They are easier to repair than compression faucets after you determine what type of faucet you have. There are three types of washerless faucets: ball, ceramic disk and cartridge.
Leaks are evident in two places... dripping from the spout and seeping from around the spout where it joins the body of the faucet.
Leaks from the spout indicate that the ball, disk or cartridge is leaking. To repair, turn off the water to the faucet, then remove the handle. The handles on ball-type faucets are held in place with a setscrew that requires an Allen wrench to loosen. Ceramic disk and cartridge-type handles usually are held in place by a screw hidden beneath a cap.
On ball and ceramic disk-type faucets, remove the ball or disk and replace the seals. You can buy replacement kits for these faucets at the hardware store or home center.
On cartridge-type faucets, remove the spout and pull out the retainer clip that holds the cartridge in place. To remove the cartridge, pull on the cartridge stem with a twisting motion. If it resists, install the handle so you can a better grip on the cartridge to pull it out. Take the cartridge to the hardware store or home center and purchase an exact replacement kit.
Reassemble the faucet according to directions.
Leaks at the spout-to-body joint indicate an O-ring failure. Disassemble the faucet as described above. Remove the spout sleeve and replace the O-rings. It's a good idea to replace these seals if you have the faucet disassembled for repair of the ball, disk or cartridge.

Hi bobwiz...

Your faucet may be leaking because of a bad seat that the rubber/plastic washer seals on...
Check the seat condition for wear, especially a "line cut" in the brass seat from where the water has eroaded the seat, this could cause your leak.
If the seat has a "line" cut in it, then you will need to purchase a seat repair tool from your local hardware store and refinish the seat.
Check and replace your plastic/rubber washer, it is 7 yrs old and maybe hard and not seating properly.
Please take time to rate me

Check these items:

1. If you installed new faucet seats, did you add a little pipe joint compound to the threads before installing them?

2. Make sure the shower diverter is in the off position and you're not seeing water leaking from the spout that could be coming from the shower pipe or residual water from the shower head.

3. Make sure you have the correct faucet washers - some or tapered and some are flat and must fit the stem counter bore correctly and that the counter bore isn't damaged or the stem shaft isn't bent. Make sure the waskers are the correct hardness.

4. Make sure the screws that secure the faucet washers are tight, but not too tight. It doesn't hurt to add a little pipe joint compound to the screws.

T&S is popular brand. Do you have a piece of old washer stuck inside valve. Flush it out.

New faucets are easily had from many places like beveragefactory.com, northerbrewer.com, austinhomebrew.com, micromatic.com, etc. You should also be able to find replacement washers/o-rings for your current faucet, but it may require an email or phone call to one of the sales reps to locate one. If you decide on a new faucet consider a Ventmatic (Shirron) forward sealing faucet. Much better design that drips less and doesn't stick after sitting a few days. The only issue I've seen is that the machined grooves in back of the faucet may not mate up with your current shank requiring a machined (as opposed to cast) shank to match.