Dalian Xiangrui Valve Manufacturing Co., Ltd.

Four Functions of a Thermostatic Trap

Air and water removal: The pressure or gravity of the pipeline causes the valve to open, quickly removing air and water, and shortening the heating time.
Steam blocking: Steam entering the valve chamber causes the bimetallic element to bend, generating thermal tension and overcoming the pipeline pressure to close the valve ball. The thermal tension varies with the corresponding saturated steam curve. Therefore, it works effectively within its pressure range.
Condensation discharge: Condensate gradually reduces the thermal tension of the bimetallic element, causing the discharge port to gradually open, allowing the condensate to be discharged smoothly.
Check valve function: The valve ball can immediately close the discharge port when backflow occurs in the pipeline, without the need for additional devices.

Performance Specifications

Product Model	Working Pressure MPa	Maximum Operating Temperature ℃	Discharge Port Diameter (in)	Continuous Condensate Discharge (kg/h)
Product Model	Working Pressure MPa	Maximum Operating Temperature ℃	Discharge Port Diameter (in)	Inlet/Outlet Pressure Difference MPa	0.035	0.1	0.2	0.35	0.52	0.7	1.05	1.4	2.1	2.8
TSF-1	0～1.4	260	3/8	Condensate (subcooling) 22℃	286	431	612	748	816	907	1043	1202
TSF-2	0～2.8	260	1/3		204	295	386	476	567	658	726	816	907	1021
TSF-3	0～2.8	454	1/4		100	147	200	245	284	318	363	420	499	590
SF-1	0～0.35	260	3/4		998	1542	2041	2495
SF-2	0～1.4	260	1/2		544	771	998	1225	1361	1497	1724	1996
SF-3	0～2.8	454	3/8		263	397	567	703	794	885	1021	1179	1338	1497

Materials Table

NO.	1	2	3	4	5	6	7	8	9	10	11
Parts ARTS	Valve Body	Filter Screen	Valve Core Frame	Gasket	Bolt	Bimetallic Strip	Adjusting Nut	Valve Stem	Valve Cover	Gasket	Ball
Specification SPEC	WCBCF8CF8M	304	ZG1Cr13 weld-overlay STL	1Cr18Ni9 flexible graphite	42CrMo 304 316	B1 MB18	304	316L	WCB CF8 CF8M	1Cr18Ni9 flexible graphite	9Cr18

Keyword

drain valve

Air and water discharge: The pressure or gravity of the pipeline causes the valve to open, quickly discharging air and water, and shortening the heating time. Steam blocking: The steam entering the valve chamber causes the bimetallic element to bend, generating thermal tensile force and overcoming the pipeline pressure to close the valve ball. The thermal tensile force changes with the corresponding saturated steam curve. Therefore, it can work effectively within its pressure range. Condensation discharge: Condensation gradually reduces the thermal tensile force of the bimetallic element, causing the discharge port to gradually open, allowing the condensation to be discharged smoothly. Check valve function: The valve ball can immediately close the discharge port when backflow occurs in the pipeline, without the need for additional devices.

xiangrui@dl-xiangrui.com

0086-13904286944