|Place of Origin:||Sichuan|
|Minimum Order Quantity:||1 - 9 Pieces|
|Price:||$400.00 PER PC|
|Packaging Details:||Inner package:plastic bag sealed package Outer package:carton package or wooden case package The lettering, nameplate, certificate for valves are available|
|Supply Ability:||2000 Pieces per Month|
|Structure:||SAFETY||Valve Type:||Safety Valve|
|Color:||Customers' Requirements||Body Material:||SS304|
|Certificate:||CE ISO9001||OEM:||OEM Service|
adjustable pressure relief valve,
safety pressure relief valve
SS Flange Safety Relief Valve Adjustable Pressure Corrosion Resistance
Adjustment of discharge and recoil pressure:
① To adjust the discharge pressure and return pressure of the valve, an operation test of the valve to the full opening height must be performed. Therefore, it can only be performed on a large-capacity test device or after the safety valve is installed on the protected equipment. The adjustment method varies according to the valve structure.
② For the structure with recoil disk and valve seat adjusting ring, the valve seat adjusting ring is used for adjustment. Unscrew the adjusting ring fixing screw, and extend a tool such as a thin iron rod from the exposed screw hole, then you can turn the gear teeth on the adjusting ring to make the adjusting ring turn left and right. When the adjustment ring is turned counterclockwise to the left, its position rises, and both the discharge pressure and the seating pressure will decrease. Conversely, when the adjustment ring is rotated clockwise to the right, its position decreases, and both the discharge pressure and the recoil pressure will increase. During each adjustment, the adjustment: the rotation of the ring should not be too large (usually a few teeth can be rotated). After each adjustment, the fixing screw should be screwed on so that its end is located in the groove between the two teeth of the adjusting ring, which can prevent the adjusting ring from rotating without generating radial pressure on the adjusting ring. For safety reasons, the inlet pressure of the safety valve should be appropriately reduced (generally lower than 90% of the opening pressure) before the adjustment ring is turned to prevent the valve from opening suddenly during adjustment and causing an accident.
③ For the structure with upper and lower adjusting rings (one adjusting ring on the guide sleeve and the valve seat), the adjustment is more complicated. The valve seat adjusting ring is used to change the size of the passage between the valve disc and the adjusting ring, thereby changing the degree of pressure accumulation in the chamber between the valve disc and the adjusting ring when the valve is initially opened. When the valve seat adjusting ring is raised, the degree of pressure accumulation increases, so that the stage of proportional opening of the valve is reduced and a sudden rapid opening is reached relatively quickly. Therefore, raising the seat adjustment ring can reduce the discharge pressure. It should be noted that the seat adjustment ring should not be raised too close to the disc. In that way, the leakage at the sealing surface may cause the valve to open suddenly prematurely, but at this time the pressure of the medium is not enough to keep the valve flap in the open position, and the valve flap then closes, so the valve jumps frequently. Seat adjustment: "The ring is mainly used to reduce the proportion of the valve, open the stage and adjust the discharge pressure, but also affect the return seat pressure.
The upper adjusting ring is used to change the angle of turning of the flowing medium after it is reflected on the underside of the valve flap, thereby changing the magnitude of the fluid force to adjust the recoil pressure. When the upper adjusting ring is raised, the turning angle is reduced, and the fluid force is reduced accordingly, so that the recoil pressure is increased. Conversely, when the upper adjustment ring is lowered, the recoil pressure decreases. Of course, the upper adjustment ring also affects the discharge pressure at the same time that it changes the recoil pressure. That is, raising the upper adjustment ring will increase the discharge pressure, and lowering the upper adjustment ring will reduce the discharge pressure, but the degree of influence is not as good as the return pressure. The seat pressure is so obvious.
Before delivery, we will check the item's quality strictly one by one. Life-warranty for radio body & accessories, please contact us immediately when you get defective, thanks.
T/T,Western Union,escrow below US$1000 accept Paypal payment term(please do Not believe anybody by Email say our band changed,thank you)
Q. Are there any special requirements for OEM purchases?
A. Yes. Liangchuan requires proof of trademark registration in order to print or emboss your trademark onto the product or packaging.
Q. Do Liangchuan products come with a warranty ?
A. Yes. That's why we offer 3-year product life guarantee, and a generous1 year warranty on all purchases that begins with the bill of loading.
Q. How can I get some samples?
A. Usually we don’t offer free sample and express fee are required, the sample cost can be deducted from your first large order.
Q. What's the MOQ of your products?
A. Our MOQ is one (1) piece/set.
Q. Are you a manufacturer with your own factory?
A. Yes, we are the manufacturer for more than 8 years
Contact Person: Doris