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ESPA4-LD Equivalent

Product No.：TFXLP-8040-34
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Equivalent, equivalence, replacement, alternative, analog, retrofit, analogue, derivative, substitution: Hydranautics ESPA4-LD, ESPA4LD

General Information

TFXLP-8040-34 is manufactured as an equivalent, replacement, alternative, retrofit, analogue to Hydranautics ESPA4-LD (ESPA4LD) RO membrane element.

Hydranautics ESPA4-LD equivalent reverse osmosis membrane elements TFXLP-8040-34 are developed for energy saving for water treatment in low TDS environments, ideal for the desalination of municipal water, groundwater with less than 1,000 ppm.

TFXLP-8040-34 reverse osmosis membrane element provides reliable performance and long service life at an extra low feed pressure, and can be widely used in pure water preparation and related industries.

Features & Advantages

Extreme low working pressure
Energy saving
Economical efficiency
Economical equivalent element for direct replacement to Hydranautics ESPA4-LD

Applications

Potable water
Commercial water system
Industrial process water

Specifications

Configuration: Spiral wound element
Membrane Polymer: Polyamide thin-film composite

Performance

Element Model

Membrane Active Area

ft² (m²)

Feed Spacer

Mil (mm)

Permeate Flow Rate^*

GPD (m³/d)

Stabilized Salt Rejection^**

Minimum Salt Rejection

TFXLP-8040-34

400 (37.2)

34 (0.864)

10,500 (39.7)

99.2%

99.0%

Standard test conditions:

The above performance is initial (data record after 30 minutes of operation), based on the following conditions:

500 ppm NaCl solution

100 psi (7 bar) operating pressure

25°C (77°F) operating temperature

15% permeate recovery

7.5-8 pH range

*Permeate flow for individual elements may vary but will be no more than ±15%.

**Stabilized salt rejection is generally achieved within 24-48 hours of continuous use; depending on feed water characteristics and operating conditions.

Element Dimensions

Model	Length L inch (mm)	Diameter D inch (mm)	Permeate tube inner diameter d inch (mm)
8040	40 (1,016)	7.9 (201)	1.125 (28.6)

Operating and Cleaning Limits

Maximum Operating Pressure	600 psi (41 bar)
Maximum Operating Temperature	45°C (113°F)
Maximum Chlorine Concentration	0.1 ppm
pH Range, Continuous	2 - 11
pH Range, Cleaning	1 - 13
Maximum Feed SDI (15 mins)	5
Maximum Element Pressure Drop	15 psi (1 bar)
Maximum Feed Flow	17 m³/h
Minimum Ratio of Concentrate to Permeate Flow for Each Element	5:1

The limits shown above are for general applications. For specific projects, operating at more conservative values may ensure the best performance and longest life of the membrane element.

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