Dia® Series Tub and Shower Systems
by Symmons®

Dia faucet and towel ring installed
Dia towel bar installed

Symmons is an industry leader when it comes to functional design, and the Dia line is no exception. Inspired by modern European industry, the Dia line provides you with a fresh, clean, simple, geometric design that is sure to complement your home and complete your bathroom décor. Beautiful finishes, options, and accessories will make your dream bathroom come to life. PlumbingSupply.com® is proud to offer these gorgeous tub and shower products as well as thousands of other plumbing-related products.
WaterSense dropThe tub/shower systems on this page are CEC compliant and WaterSense certified for exceptional low-flow performance

Dia Complete Tub & Shower Systems

Complete Dia shower/handshower system in chrome
This Dia tub/shower/handshower system features:
  • Modern style brings elegant simplicity to your bathroom - coordinates perfectly with Dia faucets and accessories
  • The ultimate in versatility, this stylish system has a tub spout, standard shower head, and a hand held shower!
  • Never suffer from "shower shock" again - the Symmons Temptrol pressure balancing mixing valve protects you from unexpected temperature fluctuations
  • Triple outlet diverter switches water between the showerhead, handshower, and tub spout, giving you the option to pick your bathing preference
  • All pieces coordinate for a clean and coordinated shower
  • 3" shower head fits standard 1/2" shower arms
  • Handshower features comfort grip and 2-3/4" diameter face - also with rain spray and 1.5gpm flow rate
  • 30" slide bar for hand shower
  • 6-1/2" non-diverter tub spout
  • ADA compliant
  • Click here for 3506 specifications

Includes pressure balance valve, diverter valve, valve trim, stationary shower head, shower arm, tub spout, hand shower, 5 ft. flexible metal hand shower hose, in-line vacuum breaker, and slide bar for the handshower
Dia Complete Tub/Shower/Handshower System 3506
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Complete Dia shower/handshower system in chrome
These Dia tub/shower/handshower systems feature:
  • Modern European style brings elegant simplicity to your bathroom - coordinates perfectly with Dia faucets and accessories
  • The ultimate in versatility, this stylish system has a tub spout, standard shower head, and a hand held shower!
  • Never suffer from "shower shock" again - the Symmons Temptrol pressure balancing mixing valve protects you from unexpected temperature fluctuations
  • All pieces coordinate for a clean and coordinated shower
  • 3" shower head fits standard 1/2" shower arms
  • Handshower features comfort grip and 2-3/4" diameter face - also with rain spray and 1.5gpm flow rate
  • Diverter included for toggling between hand shower and showerhead
  • Optional secondary integrated diverter (S-3502-EX only)
  • 7" diverter or 6-1/2" non-diverter tub spout
  • ADA compliant
  • Click here for 3502-EX specifications
  • Click here for S-3502-EX specifications

Includes pressure balance valve, diverter, valve trim, stationary shower head, shower arm, tub spout, hand shower, 5 ft. flexible metal hand shower hose, in-line vacuum breaker, and column/slide bar with hand shower bracket
Dia Complete System w/ Diverter Spout 3502-EX
Dia Complete System w/ Integrated Diverter S-3502-EX
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Dia Tub & Shower System with Diverter

Chrome plated Dia tub/shower system model S-3502
These Dia tub/shower systems feature:
  • Modern style brings elegant simplicity to your bathroom - coordinates perfectly with Dia faucets and accessories
  • The Symmons Temptrol pressure balancing mixing valve eliminates "shower shock" from flushing toilets
  • Adjustable stop screw limits handle turn for even greater scald protection
  • Optional diverter built right into the pressure balancing valve for more compact installation (S-3502 only)
  • 3" shower head fits standard 1/2" shower arms
  • 6-1/2" non-diverter or 7" diverter tub spout
  • ADA compliant
  • Click here for 3502 specifications
  • Click here for S-3502 specifications

Includes pressure balance valve, valve trim, shower head, shower arm, and tub spout

Dia Tub/Shower System w/ Diverter Spout 3502
Dia Tub/Shower System w/ Integral Diverter S-3502
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Dia Shower & Handshower System with Diverter

Dia shower/handshower system
This Dia shower/handshower system features:
  • Luxury two head shower system with superior protection from scalding
  • Versatile system is ideal for curbless or open showers
  • 3" shower head fits standard 1/2" shower arms
  • Handheld shower with 30" slide bar and 5 ft metal hose lets you rinse with ease whether standing or sitting
  • Scald protection provided by the Temptrol pressure balancing mixing valve
  • Showerhead and handshower both have a water-efficient flow rate of 1.5gpm
  • ADA compliant
  • Click here for 3505 specifications

Includes pressure balance valve, diverter valve, valve trim, stationary shower head, shower arm, hand shower, 5 ft. flexible metal hand shower hose, in-line vacuum breaker, and slide bar for the handshower

Dia Shower/Handshower System 3505
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Dia Shower & Handshower Systems

Dia shower/handshower system
These Dia shower/handshower systems feature:
  • Luxury two head shower system with superior protection from scalding
  • Optional integrated volume control (S-3501-EX only)
  • Versatile system is ideal for curbless or open showers
  • 3" shower head fits standard 1/2" shower arms
  • Handheld shower with 5 ft metal hose lets you rinse with ease whether standing or sitting
  • Diverter included to switch between shower and handshower
  • Scald protection provided by the Temptrol pressure balancing mixing valve
  • Showerhead and handshower both have a water-efficient flow rate of 1.5gpm
  • ADA compliant
  • Click here for 3501-EX specifications
  • Click here for S-3501-EX specifications

Includes pressure balance valve, valve trim, stationary shower head, shower arm, hand shower, 5 ft. flexible metal hand shower hose, in-line vacuum breaker, and column/slide bar with bracket for the handshower

Dia Shower/Handshower System 3501-EX
Dia Shower/Handshower System w/ Volume Control S-3501-EX
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Dia Shower Systems

Pressure balance Dia shower system, shown in chrome
These Dia shower systems feature:
  • Simplistic modern style paired with legendary Symmons quality
  • Symmons Temptrol pressure balancing mixing valve for superior scald protection
  • Set the maximum allowed temperature at installation with the adjustable stop screw
  • Optional secondary integral volume control handle lets you set the amount of water flowing from your system (S-3501 only)
  • 3" shower head has a rain spray and water-saving 1.5gpm flow rate
  • ADA compliant
  • Click here for 3501 specifications
  • Click here for S-3501 specifications

Includes pressure balance mixing valve, valve trim, shower head, and shower arm

Dia Shower System 3501
Dia Shower System w/ Volume Control S-3501
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Dia Handshower System

Dia handshower system
This Dia handshower system features:
  • The versatility of a handheld shower and the reliability of Symmons, all wrapped up in a stylish, elegant design
  • Uses the Temptrol pressure balancing mixing valve for superior scald protection
  • Set maximum handle turn for even greater temperature control
  • The 90° wall fixed wall outlet and 5 ft. flexible metal hose resist kinking and twisting, while in-line vacuum breaker prevents backflow
  • Handshower cradle securely holds the hand shower at your preferred height
  • Handheld shower flow rate: 1.5gpm
  • ADA compliant
  • Click here for 3503 specifications

Includes pressure balance valve, valve trim, hand shower, 5 ft. flexible metal hand shower hose, in-line vacuum breaker, and slide bar for the handshower

Dia Handshower System 3503
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Dia Tub & Handshower System with Diverter

Dia tub/handshower system
This Dia tub/handshower system features:
  • Update a standard tub installation with this stylish handheld shower system
  • Great for children, the disabled, or anyone who enjoys the freedom of a moveable shower head
  • Scald protection from Symmons Temptrol pressure balancing mixing valve
  • Diverter integrated into pressure balance valve for cleaner installation
  • Adjustable stop screw sets the maximum temperature by limiting handle turn
  • 6-1/2" non-diverter tub spout
  • Handshower flow rate: 1.5 gpm
  • ADA compliant
  • Click here for S-3504 specifications

Includes pressure balance valve with built-in diverter, valve trim, tub spout, hand shower, 5 ft. flexible metal hand shower hose, in-line vacuum breaker, 90° fixed wall connection, and wall cradle for the handshower

Dia Handshower System S-3504
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Dia Handshower Kit

Model H321-V hand held shower, shown in chrome
This handshower features:
  • Complete kit lets you add a handshower to your bathroom for comfort and convenience
  • 30" slide bar and cradle allow you to position the handshower at the height you want
  • Available in two designer finishes
  • Includes handshower, 5' flexible metal hose, wall connection, 30" slide bar with hand shower bracket, and inline vacuum breaker
  • Click here for H321-V specifications
Dia Handshower Kit H321-V
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Dia Centerset Bathroom Faucet

Dia bathroom faucet
This Dia bathroom faucet features:
  • Coordinating centerset faucet brings the elegance out of the shower and into the rest of the bathroom
  • Durable metal construction and 1/2" IPS connections will last for years
  • Handles mounted at 4" centers
  • Metal drain assembly
  • WaterSense certified water-saving 1.5 gpm flow rate
  • Click here for SLC-3512 specifications
Dia Centerset Bathroom Faucet SLC-3512
Due to low-flow regulations, these lavatory faucets are not available for shipping to California.
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Dia Widespread Bathroom Faucet

Dia bathroom faucet
This Dia bathroom faucet features:
  • Coordinating widespread faucet brings the elegance out of the shower and into the rest of the bathroom
  • Durable metal construction and 1/2" IPS connections will last for years
  • Handles can be mounted from 8-16" centers to fit nearly any bathroom sink installation
  • Braided supply hoses included with faucet to help ease installation
  • WaterSense certified water-saving 1.5 gpm flow rate
  • Click here for SLW-3512 specifications
Dia Widespread Bathroom Faucet SLW-3512
Due to low-flow regulations, these lavatory faucets are not available for shipping to California.
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Dia Single Handle Bathroom Faucet

Dia bathroom faucet
This Dia bathroom faucet features:
  • Coordinating single-handle faucet brings the elegance out of the shower and into the rest of the bathroom
  • Braided supply hoses included with faucet to help ease installation
  • Ceramic cartridge
  • Available with or without drain assembly
  • Available in Polished Chrome and Satin Nickel finishes
  • WaterSense certified water-saving 1.5 gpm flow rate
  • Click here for SLS-3510/3512 specifications
Dia Single Handle Bathroom Faucet SLS-3510
Dia Single Handle Bathroom Faucet w/ Drain Assembly SLS-3512
Due to low-flow regulations, these lavatory faucets are not available for shipping to California.
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Dia Series Components & Accessories

Dia shower valve
Dia shower valves feature:
  • Smooth design and modern look make for a sophisticated style
  • Add on to your existing Dia suite shower or upgrade an old valve and trim
  • Shower valve and trim only allows you to mix and match with your favorite showerhead and/or tub spout
  • Durable metal construction that is built to last
  • Uses the Symmons Temptrol pressure balancing mixing valve with adjustable stop screw to limit handle turn
  • Use with diverter tub spout or separate diverter for tub/shower combinations
  • Click here for 3500 specifications

Dia Shower Valve and Trim 3500
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Dia series S-3500TS shower valve and trim with diverter in chrome
Dia Tub/Shower Valve with Diverter & Trim - S-3500TS
Polished Chrome - $203.78
Satin Nickel - $248.12
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Dia series S-3500 shower valve and trim with volume control in chrome
Dia Shower Valve & Trim with Volume Control - S-3500
Polished Chrome - $203.22
Satin Nickel - $247.85
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Dia series 35-3DIV triple outlet diverter in chrome
Dia Triple Outlet Diverter - 35-3DIV
Polished Chrome - $240.99
Satin Nickel - $292.68
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Dia series 35-2DIV dual outlet diverter in chrome
Dia Dual Outlet Diverter - 35-2DIV
Polished Chrome - $218.56
Satin Nickel - $268.26
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Dia series 352SH showerhead in chrome
Dia 4" Showerhead - 352SH
Polished Chrome - $43.61
Satin Nickel - $56.26
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Dia series 300 shower arm with heavy flange in chrome
Dia 8" Shower Arm with Heavy Flange - 300
Polished Chrome - $41.85
Satin Nickel - $49.08
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Dia series 057 tub spout in chrome
Dia 7" Diverter Tub Spout - 057
Polished Chrome - $44.52
Satin Nickel - $62.06
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Dia series 353RH robe hook in chrome
Dia Robe Hook - 353RH
Polished Chrome - $13.34
Satin Nickel - $17.29
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Dia series 353DRH double robe hook in chrome
Dia Double Robe Hook - 353DRH
Polished Chrome - $14.65
Satin Nickel - $19.05
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Dia series 353TB-18 18" towel bar in chrome
Dia 18" Towel Bar - 353TB-18
Polished Chrome - $40.96
Satin Nickel - $48.49
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Dia series 353TB-24 24" towel bar in chrome
Dia 24" Towel Bar - 353TB-24
Polished Chrome - $41.02
Satin Nickel - $52.93
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Dia series 353DTB-18 18" towel bar in chrome
Dia 18" Double Towel Bar - 353DTB-18
Polished Chrome - $65.79
Satin Nickel - $84.17
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Dia series 353DTB-24 24" towel bar in chrome
Dia 24" Double Towel Bar - 353DTB-24
Polished Chrome - $69.66
Satin Nickel - $88.88
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Dia series 353TS-22 22" towel shelf with bar in chrome
Dia 22" Towel Shelf with Bar - 353TS-22
Polished Chrome - $132.48
Satin Nickel - $167.34
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Dia series 353TR towel ring in chrome
Dia Towel Ring - 353TR
Polished Chrome - $26.09
Satin Nickel - $38.84
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Dia series 353SR-5 5 ft. curved shower rod in chrome
Dia 5' Curved Shower Rod - 353SR-5
Polished Chrome - $51.54
Satin Nickel - $75.17
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Dia series 353SR-6 6 ft. curved shower rod in chrome
Dia 6' Curved Shower Rod - 353SR-6
Polished Chrome - $60.01
Satin Nickel - $85.85
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Dia series 353TP toilet paper holder in chrome
Dia Toilet Paper Holder - 353TP
Polished Chrome - $25.10
Satin Nickel - $32.98
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Dia series 353TPC toilet paper holder with cover in chrome
Dia Toilet Paper Holder - 353TPC
Polished Chrome - $40.62
Satin Nickel - $46.50
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Dia series 353SD soap dish in chrome
Dia Soap Dish - 353SD
Polished Chrome - $39.43
Satin Nickel - $50.16
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Dia series 353TH toothbrush holder in chrome
Dia Toothbrush Holder - 353TH
Polished Chrome - $33.34
Satin Nickel - $40.21
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Related Items & Accessories



Frequently Asked Questions

Q. "What is the quality of Symmons products?"
A. Since the 1930's Symmons has provided superior engineering, and solid workmanship in every product. Product manufacturing, assembly, and handling are subject to strict quality control and only the highest quality materials are selected to ensure durability for years to come.

Q. "How do pressure balance valves prevent scalding?"
A. Pressure balance valves help prevent scalding by compensating for changes in pressure on the hot or cold supply lines. When water use elsewhere in the system causes the pressure of either the hot line or the cold line to fluctuate, like when a toilet flushes, the internal piston in the Symmons Temptrol pressure balance shower valve adjusts automatically to instantly and continually equalize or "balance" the hot and cold water pressure. This keeps the water temperature consistent, so you don't have to worry about shocks of ice cold or burning hot water.

Q. "How does a pressure balance valve work without a volume control?"
A. Pressure balance valves, are basically on/off devices - the water is all on or all off; there is no in-between. To turn the valve on, you shift the lever. The farther you turn the lever, the warmer the water gets, but it's always at full flow.

Q. "Why would you want to limit the handle turn on a pressure balance valve?"
A. A pressure balancing valve will prevent you from being scalded if someone flushes a toilet since it keeps the ratio of hot to cold consistent. However, if someone shoves the handle all the way to the "all hot" position, there's virtually no cold water tempering the hot water. If your water heater is set very high, or if members of your household have sensitive skin, this can be an accident waiting to happen. For this reason, these pressure balance mixing valves have a stop screw that will allow you to set the maximum hot to cold ratio, effectively setting the maximum temperature. To take advantage of this feature, simply rotate the knob to set the water to the hottest that you'd ever want out of the shower, then turn the set screw until it bottoms out. This prevents the temperature knob from turning past the position you selected, effectively limiting the maximum temperature allowed from that valve.


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