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No Loss Drain Valve
Product Specifications:
- Robo Drain No Loss Drain Valves (RD11-T)
- MAG11 Float Drain (Inexpensive No Loss Drain)
- Dehydra52
- Smart Guard 60 GPM
- Smart Guard Mini and Max No-Loss Drains
- No Loss Drain Cost saving Calculator
eCompressedair offers the Robo Drain Series, SmartGuard Series and the DEHYDRA52 no-loss drain valves. In most applications no loss drain valves have a short payback by reducing the amount of compressed air used during draining. Additionally no-loss drain valves operate pneumatically saving the cost of electricity. See the savings calculator table below.
Pricing and more Information
Smart Guard Mini 30 GPH, 1/2'' NPT
Smart Guard 60 GPH, 1/2'' NPT
Smart Guard Max 150 GPH, 1/2'' NPT
NLD1 No-Loss RoboDrain (NPT conn: 1/2'' in & 1/2'' out)
NLD24T No-Loss RoboDrain (NPT conn:(2) 3/4'' in & 1/2'' out)
DEHYDRA52
Dehydra52
DEHYDRA52 No Loss Drain Buy / Price
A Dehydra 52 drain valve often saves enough compressed air to self-amortize in six months or less. See the Dehydra52 brochure for more information.
- Handles compressed air systems 100 to 100,000 CFM
- Zero air loss (no loss design)
- Efficient all pneumatic operation
- Large clog resistant fluid porting
- No electricity required
- Resists nost chemically aggressive environments
- Demand activated -- Eliminates the need for pre-setting
- Manual purge button
- Sealed actuation mechanism -- unaffected by rust and pipe scale
Operating Parameters
- Maximum reservoir pressure: 200 PSIG (1.4 BAR)
- Allowable fluid temperature: 34 to 150° F (1 to 65° C)
- Required Pilot Air Pressure: 55 to 120 PSIG (5.6 to 8.4 BAR)
Specifications
- Weight: 11 lbs. (5 kilos)
- Fluid port size: 5/8 in. (16 mm)
- Ball valve port size: 1/2 in. (13 mm) Stainless Steel ball Stem, Double viton o-rings, nickel plated brass body
- Reservoir Capacity: 52 oz. (1.39 Liters)
- Discharge Quantity (1 cycle): 44 oz. @ 100 PSIG (1.18 Liters @ 7 BAR)
- Continous Flow Quantity: 13.6 U.S. gallons per minute (46.8 Liters)
DEHYDRA52 No Loss Drain Buy / Price
Smart Guard 60 GPH No Loss Drain Valves
The Smart Guard no-loss drain system uses state-of-the-art software in combination with a special transducer interface to measure the presence of condensate, volumetrically, 50 times per second. There is no loss of compressed air. Continuous monitoring ensures fast, effective discharge of up to 60 gallons of condensate per hour. There are no sensors to foul up and the unit functions equally well with clear water or heavily emulsified and dirty condensate.
Buy Smart Guard 60 GPH, 1/2'' NPT
The sensors in the Smart Guard do not come into contact with the condensate!
Specifications
Condensate inlet connections top and bottom: 1/2" NPT
Condensate discharge outlet connection: 1/2" NPT
LED ON: Yes
Minimum/Maximum pressure: 0 to 230 psi
Minimum/Maximum temperature: 35°F to 140°F
Voltage supply: 230 VAC or 115 VAC
Electrical protection rating: IP65/NEMA 4
Maximum drainage capacity: 60 gallons condensate per hour
Valve seals: FPM
Valve internal parts: stainless steel
Type of valve applied: Direct operated
Head material: Die cast brushed aluminium
Body material: Polyamide,fibreglass reinforced; fire retardant
Maximum compressor capacity: 3000 CFM (85 m3/min)
Supplied with 6 ft. (2 meters) power cable
Options: Potential free alarm contact
A1 =Normally open contacts,closed when in alarm fase
A2 =Normally closed contacts,open when in alarm fase
Drain valve comes with the Floor/wall mounting bracket including hardware.
Dimensional Drawing

CLICK TO ENLARGE
- Height: 5.26 in.
- Width: 6.2 in.
- Depth: 4.65 in.
Smart Guard 30 GPH Mini and 150 GPH Max No Loss Drains
The Smart Guard Max and Mini no-loss drain system uses state-of-the-art software in combination with a special transducer interface to measure the presence of condensate, volumetrically, 50 times per second. There is no loss of compressed air. Continuous monitoring ensures fast, effective discharge of up to 30 Gallons of condensate per hour by the Mini and 150 GPH by the Smart Guard Max. There are no sensors to foul up and the unit functions equally well with clear water or heavily emulsified and dirty condensate.
Buy Smart Guard Mini 30 GPH, 1/2'' NPT
Buy Smart Guard Max 150 GPH, 1/2'' NPT
The sensors in the Smart Guard Max do not come into contact with the condensate!
Specifications
- Condensate inlet connections top and bottom: 1/2" NPT
- Condensate discharge outlet connection: 1/2" NPT
- LED ON: Yes
- Maxmum /Maximum pressure: 0 to 230 PSI
- Maxmum/Maximum temperature: 35°F to 140°F
- Voltage supply: 230 VAC or 115 VAC
- Electrical protection rating: IP65/NEMA 4
- Maximum drainage capacity: 30 GPH Mini model or 150 GPH Max model condensate
- Valve seals: FPM
- Valve internal parts: Stainless Steel
- Type of valve applied: Direct operated
- Head material: Die cast brushed aluMaxum
- Bowl/Valve material: Lexan /Brass
- Maximum compressor capacity: 3000 CFM 85 m3/min
- Supplied with 6 ft. (2 meters) power cable
Dimensional Drawing

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- Height: 6.3 in.
- Width: 3.9 in.
- Depth: 4.5 in.
RoboDrain
These are Pneumatic Products Corporation's (PPC) versions of the Robo Drain. See our Robo Drain page for the original Robo Drain.
NLD1 RoboDrain Buy / Price
NLD24T RoboDrain Buy / Price
Robo Drain Brochure
| Typical No Loss Drain Valve Properties |
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Part Number
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NLD1
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NLD24T
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Power Supply (VAC)
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Internal Pilot
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80-120 PSIG
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Aftercooler Capacity
SCFM@ 100 PSIG Ambient 100°F / 100% RH
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122 GPH
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2,200
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Refrigerated Air Dryer Capacity
SCFM@ 100 PSIG Ambient 100°F / 100% RH
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122 GPH
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4,400
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Prefilter & Coalescer Capacity
SCFM@ 100 PSIG Ambient 100°F / 100% RH
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122 GPH
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13,200
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Operating Pressure
Min/Max (PSIG)
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0-250
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0-250
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Temperature
Min/Max (°F)
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34-180
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34-180
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Connections Inlet
(NPT - f)
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1/2
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(2) 3/4
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Connections Outlet
(NPT - f)
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1/2
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1/2
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Weight
(lbs)
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3
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18 1/2
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NLD24T RoboDrain No Loss Drain Valve Features
- Unique air valve design uses a magnetic force to ensure both a positive opening and closing that will prevent any air loss -- eliminates the need for the installation of a vent line in most applications
- Innovative ball support and positioning system prevents the side loading problem which otherwise could cause premature sealing failure around valve stem
- Non-clogging ball valve ensures that rust and scale will exit -- no strainer is required
- Manual test button provides confirmation of valve operation (NLD24T only)
- See through vessel
- Fully pneumatic
- Operates on demand
- No waste, Air
- Low profile - compact design
- Completely self contained
- No stainer to clean
NLD1 RoboDrain No Loss Drain Valve Features
- Vent adapter prevents air locking and makes installation easy
- Long lever ensures the float will open the drain when required and provide a high closing pressure to prevent the valve seat from leaking
- Valve seat location prevents solid particulates from interfering with drain operation
- Manual valve allows drain to be cleaned without removing from service
- Lightweight design can be installed without mounting brackets
No Loss Drain Cost Saving Calculator
| No-Loss Drain Valve Savings Calculator |
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Diameter of Drain Orifice (inches)
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1/32
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1/16
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1/8
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1/4
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3/8
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SCFM Lost
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1.6
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6.5
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26
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104
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234
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Annual Savings (US dollars)
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$63
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$661
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$2,634
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$10,572
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$23,787
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SCFM and PSID at 100 PSIG, $.07 kW/hr.
The calculator below figures how much it costs a year to have an open bleed valve. Choose the size bleed valve you have in your system and enter your utility cost per kW-Hr. The result is how much your bleed valve costs you a year and therefore how much you could save a year by installing a no loss drain valve(s).
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