Table A: Most Popular Residential & Commercial Models**

(See Table B Below For All Standard GFX Models)
MODELS & DRAWINGS

LIST

PRICE

DRAIN

IN/OUT
 (DWV)

COLD

IN/OUT

Type-L

LOA
(in.)

DHR

EFF.

PRESS

DROP
 (PSI)

SHIP

WGT

(LBS)

SAMPLE

APPLICATIONS

G3-30**

$420

3” & 3”

1/2"

30

41%

4

24

Single Coil GFX For Showers

G4-30

$504

4” & 4”

1/2"

30

48%

5

31

”

S3-30

$456

3” & 3”

3/4"

30

39%

<2

24

Dual Coil GFX For Showers

S4-30

$540

4” & 4”

3/4"

30

46%

<2

31

”
 
P2S4-40

 

$3192

 

2” & 4”

 

3/4"

 

80

70%

(4.5 gpm)

 

<2

 

155

Four S4-40's, 80” drains connected in parallel, coils in series for hi-flow multi-head showers, etc. 
P2S3-40

$2562

2” & 4”

3/4"

80

64%

(4.5 gpm)

<2

135

3” version of P2S4-40

M2P4-60

$4770

2” & 4”

1"

60

79%

(4.5 gpm)

<2

235

Two P4-60’s with one drain inlet& two cold water In/Out manifolds

*Tested in 1986 in accordance with U.S. DOE predecessor of CSA B55.1

GFX Booklets:

Coin-Op Laundry

Dishwasher

Dorm. & Hi-Rise

Food Processor

Table B: GFX Models, Specs, Applications & Prices**

GFX**

MODEL

LIST

PRICE

DRAIN

IN/OUT
(DWV)

COLD

IN/OUT

Type-L

LOA
(in.)

DHR***

EFF.

PRESS

DROP
(PSI)

SHIP

WGT

(LBS)

SAMPLE

APPLICATIONS

G3-60

$636

3” & 3”

1/2"

60

60%

8

49

Single Bathroom Homes; Industrial Cooling-Walls; Hydronic Heating

G3-40

$504

3” & 3”

1/2"

40

49%

5

32

Restricted Height Location

G3-30

$420

3” & 3”

1/2"

30

41%

4

24

”

G4-60

$780

4” & 4”

1/2"

60

67%

11

64

Single Bathroom Homes; Industrial Cooling-Walls; Hydronic Heating

G4-40

$612

4” & 4”

1/2"

40

56%

7

40

Restricted Height Location

G4-30

$504

4” & 4”

1/2"

30

48%

5

31

”

S3-60

$672

3” & 3”

3/4"

60

57%

<2

49 

Whole House Model: Hi-Flo Pressure Drop 1/6th of a G3-60

S3-40

$540

3” & 3”

3/4"

40

47%

<2

32

Restricted Height Location

S3-30

$456

3” & 3”

3/4"

30

39%

<2

24

”

S4-60

$840

4” & 4”

3/4"

60

62%

<3

64

Whole House Model: Hi-Flo Pressure Drop 1/6th of a G4-60

S4-40

$648

4” & 4”

3/4"

40

53%

<2

40

Restricted Height Location

S4-30

$540

4” & 4”

3/4"

30

46%

<2

31

”

P3-60

$1662

2” & 3”

3/4"

601/8

74%

<3

105

Commercial Dishwashers, Beauty Shops, Gang Showers…

P3-40

$1348

2” & 3”

3/4"

461/4

64%

<3

55

Restricted Height Location

P3-30

$1230

2” & 3”

3/4"

351/4

56%

<2

49

”

P4-60

$2010

2” & 4”

3/4"

601/8

66%

(4.5 gpm)

10

111

Commercial Dishwashers, Beauty Shops, Gang Showers…

M2P4-60

$4770

2” & 4”

1"

601/8

79%

(4.5 gpm)

<2

235

Two P4-60’s With 1 Drain & 2 Cold In/Out Water Manifolds
P2S4-40

$3192

2” & 4”

3/4"

80

70%

(4.5 gpm)

<2

155

Twp pairs of S4-40's with 80” drains connected in parallel; coils in series
P2S3-40

$2562

2” & 4”

3/4"

80

64%

(4.5 gpm)

<2

135

Twp pairs of S3-40's with 80” drains connected in parallel; coils in series
PS4-60

$2250

2” & 4”

1"

601/8

62%

(4.5 gpm)

 

<2

 

116

Pair of S4-60’s offering ~1/6th pressure drop of a P4-60

 

G3-60-3

 

Special

 

3” & 3”

 

3/4"

 

60

50, 40, 24%

@ 2.25, 4.5

& 9 gpm

0.7, 1.6, 4.4 @ 2.25, 4.5

& 9 gpm

 

53

 

3-coil Special For Troutdale Terrace Apartment Project

 

G4-80-4

 

$1740

 

4” & 4”

 

1”

 

797/8

63, 52, 38%

@ 2.25, 4.5

& 9 gpm

0.5, 1.2, 3.3

@ 2.25, 4.5

& 9 gpm

 

64

 

4-coil Special For New Jersey Apartment Project

S2-60

$780

2

1/2"

60

49%

<3.5

35

2-coil special For Troutdale Oregon apartment complex

G2-30

$462

2

1/4"

30

33%

<9

15

Crawl spaces, single shower, under sinks, ice machines…

G2_24

Special

2

1/4"

24

28%

<7

12

”

G2-20

$330

2

1/4"

20

24%

<6

10

”

G2-12

Special

2”

(Type L)

 

1/4”

 

12

13.5%****

(1; >5 gpm)

0.7

3

Tap heat off hot water recirc- loop to eliminate inline water 

G1.5-12

Special

1.5”

(Type L)

1/4”

12

10.3%****

(1; >5 gpm)

0.7

3

Save water by providing instant hot water.

Notes: Coil & drain flow rates are 2.25 gpm unless specified otherwise.

** G Models - 1/2" Type-L coils on Type-DWV copper tube.

** S Models - two 1/2" Type-L coils manifolded on single Type-DWV copper tube.
** P & M2P Models are  “G” or “S” models manifolded together. 

*** Nominal Drainwater Heat Recovery (DHR) Efficiency for balanced flow near 2.25 gallons per minute (gpm).

**** Nominal effectiveness for coil flow rate of 1 gpm and a flooded-tube flow-rate greater than 5 gpm.

Non-standard models having 3 or more coils on single 2", 3" or 4" copper or stainless tubing is available upon request.

Approx. Plumbing Supply Prices of No-Hub Connectors (Fernco, Mission, Home Depot, Lowe’s etc.)

3" pvc to copper     $12

4" pvc to copper     $15

4"copper to copper $11

**CONTACTS: 631-807-7839 EMAIL:

1.    All prices and models are subject to change without notice due to fluctuations in copper prices.

2.    Prices F.O.B. Pawtucket, RI; S/H Not Included.

3.    2-3 Week Delivery.

U.S. Patent #4,619,311 – Coils, Tubes, Fittings & Manifolds Certified To

ASTM B88, ASTM B306 & NSF/ANSI Standard 61 Copper Parts

Every Gravity Film Heat Exchanger (GFX™) has been certified for use with potable water under

ETL & cETL & UL File SA8583 (7/92), which also prohibit the use of imported, toxic recycled-copper.

NSF Restriction Statement: “Copper Tube (Alloy C12200) is certified by NSF to NSF/ANSI Standard 61 for public water supplies meeting or in the process of meeting the U.S. EPA Lead and Copper Rule (56FR 26460, June 7, 1991). Water supplies with pH less than 6.5 may require corrosion control to limit copper solubility in drinking water.”

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