We manufacture more than a thousand specifications of over ten series of products, including safety valves, power station valves, steam extraction check valves, gate valves, globe valves, check valves, hard-sealed ball valves, all-welded ball valves, ball valves, butterfly valves, and other models and specifications.
JA42Y-16C
Low-pressure fine-tuning built-in static weight safety valve
Special Series Safety Valve
The low-pressure fine-tuning built-in static weight safety valve has a novel structure, with a structure involving the valve disc through the built-in weight gravity and a spring weight combination to improve the valve sealing performance and operation performance. The low-pressure fine-tuning built-in static weight safety valve is used in thermal systems as an overpressure protection valve on steam boilers, pressure steam containers, and pipelines. Its main features are as follows:1. The low-pressure fine-tuning built-in static weight safety valve can withstand the design of piping systems that work under low pressure and low load;
2. The low-pressure fine-tuning built-in static weight safety valve is a type of valve with a sealing surface where the built-in static weight and spring cooperate to load the valve disc, allowing for fine-tuning when the working pipeline pressure is low;
3. Using a built-in static weight sealing surface structure, it better protects the pressure vessel and pipeline; the built-in structure of the valve disc, valve seat, and weight makes it unaffected by the external environment even when there is significant pollution, particles, and dust in the external environment, allowing for better sealing; and it can be adjusted when the pressure needs minor adjustment.
4. Moreover, the valve opening, tripping discharge, and reseating performance under low pressure meet the standard requirements, and the action performance is repetitive and reliable. It overcomes the shortcomings of external weight design that is prone to leakage and the opening, tripping, reseating performance not meeting the standard requirements and poor action repeatability when the valve is externally damaged.
5. Using a low-pressure fine-tuning structure. The spring action and weight combination design causes the safety valve's weight center of gravity to shift downward, directly acting on the valve disc, ensuring stable performance when the valve opens, trips, and discharges; the spring force slightly acts on the valve disc and valve seat, preventing collisions during transportation and reducing damage to the sealing surface.
Product Classification:
Key words:
Main component materials
Part Name | Part Material Code | ||
C | P | R | |
Valve Body | WCB | CF8 | CF8M |
Valve Core | 20Cr13 | 06Cr19Ni10(304) | 06Cr17Ni12Mo2(316) |
Valve Cover | WCB | WCB/CF8 | CF8/CF8M |
Sealing Surface Material | Iron-based alloy/Cobalt-based alloy | Cobalt-based alloy | Cobalt-based alloy |
Spring | 50CrVA | 50CrVA(Fluoroplastic coated) | 50CrVA(Fluoroplastic coated) |
Main external connection dimensions
| Nominal Diameter`nbsp_tag DN(mm) | Size(mm) | |||
| do | L | L1 | DN' | |
| 20 | 12 | 90 | 85 | 25 |
| 25 | 15 | 100 | 95 | 32 |
| 32 | 20 | 115 | 100 | 40 |
| 40 | 25 | 120 | 110 | 50 |
| 50 | 32 | 145 | 130 | 65 |
| 65 | 40 | 145 | 135 | 80 |
| 80 | 50 | 170 | 150 | 100 |
| 100 | 65 | 205 | 185 | 125 |
| 125 | 80 | 210 | 190 | 150 |
| 150 | 100 | 250 | 210 | 175/200 |
| 200 | 125 | 305 | 260 | 225/250 |
| 250 | 150 | 350 | 320 | 300 |
| 300 | 185 | 380 | 350 | 400 |
| 350 | 225 | 500 | 450 | 500 |
| 400 | 280 | 500 | 450 | 500 |
| 450 | 350 | 560 | 500 | 600 |
| 500 | 350 | 560 | 500 | 600 |
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At present, it can produce more than a dozen series of more than 1,000 specifications of safety valves, power station valves, extraction check valves, gate valves, ball valves, check valves, butterfly valves, drain valves, balance valves, and regulating valves of different types and specifications.
The A42Y-P/R type is suitable for equipment or pipelines with corrosive gaseous media where the operating temperature is ≤200℃, serving as a pressure relief device.
Connecting flanges conform to JB/T 79 standard.
Connecting flanges are in accordance with JB/T79 standard.