Product Overview

ES5/ESU5 is an Inverted Bucket Steam Trap from MIYAWAKI (SERIES ES), designed for condensate discharge in steam systems. Its core advantage lies in the extended lifespan SCCV+ design, featuring a freely floating disc holder that reduces cold water hammer impact on the disc and minimizes wear, effectively extending equipment service life.

Core Structure & Design

Key components of the SCCV+ design:

Component	Function
Lever	Transmission mechanism connecting bucket to disc
Seat	Sealing component controlling condensate flow
Disc	Works with seat for sealing, freely floating
Disc Holder	Cushions cold water impact, reduces disc wear

Technical Specifications & Dimensions

Specification Table

Model	Connection	DN(mm)	Operating Pressure(MPa)	Body Material	Dimensions(mm)	Weight(kg)
ES5-3	Threaded(Rc/NPT)	15	0.01-0.3·0.7·1.1·1.6	Ductile Iron(FCD450)	L=103, H1=59, H2=67, W=75	1.9
ES5-7	Threaded(Rc/NPT)	20	0.01-0.3·0.7·1.1·1.6	Ductile Iron(FCD450)	L=105, H1=57, H2=69, W=75	2.0
ES5-11	Threaded(Rc/NPT)	25	0.01-0.3·0.7·1.1·1.6	Ductile Iron(FCD450)	L=109, H1=57, H2=69, W=75	2.1
ESU5-3	Threaded(Rc/NPT)	15	0.01-0.3·0.7·1.1·1.6·2.1	Stainless Steel(SCS13A)	L=103, H1=59, H2=67, W=75	1.9
ESU5-7	Threaded(Rc/NPT)	20	0.01-0.3·0.7·1.1·1.6·2.1	Stainless Steel(SCS13A)	L=105, H1=57, H2=69, W=75	2.0
ESU5-11	Threaded(Rc/NPT)	25	0.01-0.3·0.7·1.1·1.6·2.1	Stainless Steel(SCS13A)	L=109, H1=57, H2=69, W=75	2.1
ESU5F-3	Flanged(FF/RF)	15	0.01-0.3·0.7·1.1·1.6·2.1	Stainless Steel(SCS13A)	L=175, H1=59, H2=67, W=75	3.5
ESU5F-7	Flanged(FF/RF)	20	0.01-0.3·0.7·1.1·1.6·2.1	Stainless Steel(SCS13A)	L=195, H1=57, H2=69, W=75	3.7
ESU5F-11	Flanged(FF/RF)	25	0.01-0.3·0.7·1.1·1.6·2.1	Stainless Steel(SCS13A)	L=215, H1=57, H2=69, W=75	4.1

Flow Characteristics

The flow rate (kg/h) vs operating pressure (MPa) relationship for ES5/ESU5 can be referenced in the flow chart. Flow curves for different models increase linearly with pressure, suitable for various steam system drainage requirements.