Inverted Bucket Type Steam Trap (Model 983)

Technical Specifications

Product model: 983
Nominal diameter: DN15 - 65mm
Nominal pressure: PN1.6 - 4.0MPa
Working temperature: ≤ 350℃
Main materials: Forged steel, stainless steel, titanium alloy steel, chromium-molybdenum steel, low-temperature steel
Drive method: Manual
Design specification: GB/T 9093
Structural length: GB/T 12250
Thread connection: ISO 228
Flange connection: JB/T 79, GB 9113, ANSI B16.34
Testing and inspection: GB/T 13927

Sales Hotline:

0086-21-59110018

Product Details

Product Overview

Inverted bucket type steam trap: When steam enters the inverted bucket, the inverted bucket generates upward buoyancy. The inverted bucket is connected to a lever which in turn drives the valve core to close the valve. There are small holes on the inverted bucket, which can automatically discharge air. When some steam passes through the small holes, another part of the steam condenses into water. The inverted bucket loses its buoyancy and sinks downward. The inverted bucket is connected to the lever which in turn drives the valve core to open the valve. When steam enters the inverted bucket again, the valve closes again, and the cycle continues, with intermittent drainage.


Working principle

The inverted bucket type steam trap operates based on the density difference between condensate water and steam. Its internal structure consists of a lever system connected to an inverted bucket. It overcomes the steam pressure switch by using the inverted bucket. Inside the device, there is an inverted bucket as the liquid level sensor, with the opening facing downward. When the device is just started, air and low-temperature condensate water appear in the pipeline. At this time, the steam trap is fully open, and the air and low-temperature condensate water are quickly discharged. The temperature of the device rises rapidly. When steam enters the inverted bucket, the inverted bucket generates upward buoyancy. The inverted bucket is connected to a lever, which drives the valve core to close the valve. There is a small hole on the inverted bucket that can automatically discharge air. When some steam passes through the hole, another part of the steam condenses into water. The inverted bucket loses buoyancy and sinks downward. The inverted bucket is connected to the lever, which drives the valve core to open the valve. When steam enters the inverted bucket again, the valve closes, and the cycle continues, with intermittent drainage.


Performance parameters

PN
PN16
PN25
PN40
Anti-airflow resistance function
Exhaust port automatic control
Exhaust port automatic control
Exhaust port automatic control
PMA Maximum allowable pressure 1.6MPa@38℃
2.5MPa@38℃ 4.1MPa@38℃
PMO Maximum working pressure 1.3MPa@315℃ 2.0MPa@200℃ 2.5MPa@200℃
TMA Maximum allowable temperature
425℃@1.1MPa 425℃@1.1MPa 425℃@2.6MPa
TMO Maximum operating temperature
425℃@1.1MPa 425℃@1.1MPa 425℃@2.6MPa


Main dimensions of the shape

Product model

DN(mm) Connection method PN(MPa) Maximum allowable temperature Dimensions of the shape Weight(kg)
L H1 H2 W
980 15-20 Thread 0.01-1.0 350 128 76 70 96 2.2
981 15-25 0.01-1.6 350 128 76 100 96 2.8
982 15-25 0.01-1.6 350 170 96 137 145 7.0
983 25-32 0.01-1.6 350 202 121 193 180 14.0
884 32-40 0.01-1.6 350 235 152 212 203 23.0
885 32-50 0.01-1.6 350 260 232 222 228 26.0
816 50 0.01-1.6 350 302 214 242 202 42.0
881F 15-25 Flange 0.01-1.6 350 195 76 100 96 5
882F 20-25 0.01-1.6 350 230 96 137 145 10
883F 25-32 0.01-1.6 350 270 121 193 180 18
983F 40-50 0.01-1.6 350 320 121 193 180 18
884F 32-50 0.01-1.6 350 320 152 212 203 27
885F 40-50 0.01-1.6 350 350 232 222 228 29
816F 65-80 0.01-1.6 350 400 214 242 302 45