Miyawaki ESH8N Inverted Bucket Steam Traps

Manufacturer: MIYAWAKI Inc.
Model: ESH8N

Features

No condensate logging on primary side
Intermittent or continuous discharge depending on condensate loads means no condensate stacking up on the primary side.

Superb durability
Offers superb durability thanks to the SCCV System valve and robust super lever, as well as stainless steel internal components.

Easy maintenance
For quick and easy maintenance, this model can be repaired directly in line.

Condensate recovery

With its high degree of back pressure tolerance, this model supports condensate recovery at pressures up to 90% of the upstream pressure.

Complete steam containment

A double steam separation mechanism (implemented with a U-shaped duct and inverted bucket) provides reliable steam separation and ensures trap tightness.

Free from steam and air locking

This model is free from steam and air locking due to a small air vent hole in the top of the bucket (discharges hot air and non-condensable gases).

ESH8N

*’SCCV System’ is an abbreviation of Self Closing and Centering Valve System.

Typical applications

Suitable for use in a wide range of fields including the plant industry, foodstuff manufacturing, dyeing, cleaning, and air conditioning.

Dimensions/Weight

Screwed

Size (”) Dimensions (mm) Dimensions (in) Weight
L H1 H2 W L H1 H2 W (kg) (lb)
1/2” 220 114 111 147 8.7 4.5 4.4 5.7 11,0 24.2
3/4”
1” 224 8.8

Socket Weld

Size (”) Dimensions (mm) Dimensions (in) Weight
L H1 H2 W L H1 H2 W (kg) (lb)
1/2” 220 114 111 146 8.7 4.5 4.4 5.7 11,0 24.2
3/4”
1”

Flanged

 

Size(“) Dimensions(mm) Dimensions(in)
L H1 H2 W L H1 H2 W
1/2″ 250 114 111 146 9.8 4.5 4.4 5.7
3/4″
1″
Size(“) Weight(kg) Weight(lb)
JIS(FF,RF) JIS(RF) ASME/JPI(RF) DIN JIS(FF,RF) JIS(RF) ASME/JPI(RF) DIN
10K,16K 20K 30K 40K 150lb 300lb 600lb PN40 PN100 10K,16K 20K 30K 40K 150lb 300lb 600lb PN40 PN100
1/2″ 11,0 11,0 12,4 12,8 11,4 12,1 12,1 11,3 12,2 24.2 24.2 27.3 28.2 25.1 26.6 26.6 24.9 26.9
3/4″ 12,4 12,4 13,7 14,0 11,8 12,8 13,2 12,9 15,0 27.3 27.3 30.2 30.8 26.0 28.2 29.1 28.4 33.0
1″ 13,2 13,6 14,6 15,0 12,4 13,6 14,0 15,0 18,3 29.1 29.9 32.1 33.0 27.3 29.9 30.8 33.0 40.3

*Available flange standards: ASME/JPI, DIN, JIS

*Customized face-to-face dimensions on request.

Specifications

Model Connection Max. operating pressure Max. operating pressure differential Max. operating temperature Body material
Type Size (MPa) (psig) (MPa) (psig) TMO(℃) TMO(℉)
ESH8N-21 Screwed

Rc,NPT

1/2” 2,1 305 2,1 305 400 752 Cast steel

SCPH2/WCB

3/4”
1”
ESH8N-45 1/2” 4,4 640 4,4 640
3/4”
1”
ESH8NF-21 Flanged

FF,RF

1/2” 2,1 305 2,1 305
3/4”
1”
ESH8NF-45 1/2” 4,4 640 4,4 640
3/4”
1”
ESH8NW-21

Socket Weld

SW

1/2” 2,1 305 2,1 305
3/4”
1”
ESH8NW-45 1/2” 4,4 640 4,4 640
3/4”
1”

ESH8N-21 PMA: 4,4MPa (640psig), TMA: 400℃ (752℉), PMO: 2,1MPa (305psig), TMO: 400℃ (752℉)
ESH8N-45 PMA: 4,4MPa (640psig), TMA: 400℃ (752℉), PMO: 4,4MPa (640psig), TMO: 400℃ (752℉)
*Available flange standards: ASME/JPI, DIN, JIS

*Customized size for 1-1/4”, 1-1/2” and 2” on request.
*Please contact MIYAWAKI for further information.

Discharge Capacity

Installation Examples

To keep the drawing simple, bypass lines, valves, and other required equipment are not displayed.
If you wish to recover condensate, attach a check valve (CV model) and shut off valve on the trap’s outlet side.

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