Inverted bucket steam trap - ES10 | Miyawaki

Name: Inverted bucket steam trap - ES10 | Miyawaki
Brand: Miyawaki
SKU: Inverted bucket steam trap - ES10 | Miyawaki

Miyawaki ES10 – Inverted Bucket Steam Trap

The Miyawaki ES10 is an inverted bucket steam trap made from FC250 cast iron, designed for small to medium condensate loads in steam networks. The bucket operates the valve via a lever mechanism: the seat opens with condensate presence, and the bucket rises to close with steam entry. Discharge can be intermittent or nearly continuous, depending on the load.

Technical Specifications

Sizes: threaded 3/4"–1 1/2", flanged 1/2"–2".
Connections: Rc, NPT, or FF/RF flanges.
Flanges: ASME/JPI 150/300 lb, DIN PN16, JIS 10K/16K/20K.
PMA: 1.6 MPa.
TMA / TMO: 220 °C.
PMO: ES10-8 at 0.8 MPa, ES10-12 at 1.2 MPa, ES10-16 at 1.6 MPa.
Maximum flow for ES10 series: up to 900 kg/h, depending on Δp and flow chart.

Operational Features

The ES10 utilizes the SCCV System and stainless steel internal components. The vent hole at the top of the bucket removes hot air and non-condensable gases, reducing air locking. For condensate recovery, the product supports back pressure up to 90% of upstream pressure, with appropriate check valve and isolation valve at the outlet.

Applications

Suitable for:

industrial steam lines,
small and medium heat exchangers,
food and beverage equipment,
dyeing, cleaning processes, and heated machinery.

Does not require electric or pneumatic actuator.

Installation and Maintenance

Installation is with horizontal flow and the nameplate on the top side. The steam trap should be positioned lower than the condensate-producing equipment, with maintenance space above 170 mm. Line blow-off is required before startup. Maintenance checks include filter, valve, seat, bucket, and gaskets; gaskets are replaced after disassembly.

Standards

Compliance with PED 2014/68/EU, Article 4, Section 3, without CE marking.

Standard (Options)

DIN
ANSI
JIS

Connection (Options)

BSP
NPT
Flanged

Material (Options)

Cast Iron

Pressure Rating (Options)

0,8 - 1,6 Mpa

Description

1978 Received the Award for Excellence in Energy Saving

Features

No condensate logging on primary side

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

Easy maintenance

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

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.

Superb durability

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

Condensate recovery

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

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).

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

Typical applications

Suitable for a wide range of applications including industrial plants, food and beverage, dyeing, and cleaning.

Dimensions/Weight

Screwed

Größe	Abmessungen (mm)				Abmessungen (Zoll)				Gewicht
	L	H1	H2	W	L	H1	H2	W	(kg)	(lb)
3/4”	190	102	134	120	7.5	4.0	5.3	4.7	9,3	20.5
1”
1 1/4”
1 1/2”

Flanged

Size (”)	Dimensions (mm)				Dimensions (in)				Weight
	L	H1	H2	W	L	H1	H2	W	(kg)	(lb)
1/2”	254	102	134	120	10	4.0	5.3	4.7	12,7	28
3/4”
1”
1 1/4”	260				10.2				14,2	31.3
1 1/2”
2”

Specifications

Model	Connection		Max. operating pressure		Max. operating pressure differential		Max. operating temperature		Body material
	Type	Size	(MPa)	(psig)	(MPa)	(psig)	(℃)	(℉)
ES10-8	Screwed Rc,NPT	3/4”	0,8	116	0,8	116	220	428	Cast iron FC250
		1”
		1 1/4”
		1 1/2”
ES10-12		3/4”	1,2	174	1,2	174
		1”
		1 1/4”
		1 1/2”
ES10-16		3/4”	1,6	230	1,6	230
		1”
		1 1/4”
		1 1/2”
ES10F-8	Flanged FF,RF*	1/2”	0,8	116	0,8	116
		3/4”
		1”
		1 1/4”
		1 1/2”
		2”
ES10F-12		1/2”	1,2	174	1,2	174
		3/4”
		1”
		1 1/4”
		1 1/2”
		2”
ES10F-16		1/2”	1,6	230	1,6	230
		3/4”
		1”
		1 1/4”
		1 1/2”
		2”

*Available flange standards: ASME/JPI 150lb, 300lb, DIN PN16, JIS 10K, 16K, 20K

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.