Polypropylene (PP) Pressure Relief Valves
Description
Polypropylene (PP) Pressure Relief Valves are designed to protect systems from over-pressurization by automatically releasing excess pressure. These valves are typically self-operating and are preset to open at a specific pressure threshold, ensuring that the system pressure does not exceed safe levels.
Working Principle
PP Pressure Relief Valves operate using a spring-loaded mechanism. The valve remains closed under normal conditions due to the force exerted by a spring. When the system pressure exceeds the preset threshold, the force from the fluid pressure overcomes the spring force, causing the valve to open and release the excess pressure. Once the pressure drops below the set point, the spring force closes the valve again. This mechanism is crucial for maintaining system safety and preventing potential damage due to over-pressurization .
Applications
PP Pressure Relief Valves are used in various applications where chemical resistance and durability are required. For example, they are suitable for systems handling acids, strong alkalis, and solvents due to PP's excellent chemical resistance . They are also used in environments exposed to UV, weathering, and ozone, as PP can withstand these conditions better than some other materials .
Advantages over other Process - Valves
Polypropylene valves offer several advantages over other types of valves. They provide excellent chemical resistance, making them ideal for handling corrosive substances. Additionally, PP valves are resistant to UV and weathering, allowing them to be used in outdoor applications without degradation. This makes them more versatile compared to materials like PVC, which may not perform as well in exposed environments .
Limitations
Despite their advantages, PP Pressure Relief Valves have limitations. They do not perform well when handling chlorinated hydrocarbons or strong oxidation agents . Additionally, the temperature range for PP valves is limited to between -4° F and 195° F, which may restrict their use in high-temperature applications .
Considerations
When selecting PP Pressure Relief Valves, several factors should be considered. Initial costs are generally similar to CPVC valves, but the primary joining method is heat fusion, which may require specialized equipment and training . Operating expenses can be influenced by the valve's durability and resistance to environmental factors, potentially reducing maintenance costs. However, the need for periodic inspection and maintenance to ensure proper functioning should be factored into the overall cost of ownership.
from Blacoh Fluid Control, Inc.
1/4" POLY PRESSURE RELIEF VALVE, EPDM, NPT, MINI [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 0.25
- Connection Description: Threaded; FNPT
from Blacoh Fluid Control, Inc.
1/2" POLY PRESSURE RELIEF VALVE, EPDM, 150# FLANGE, MINI [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 0.50
- Connection Description: FLANGE, US, 150# CLASS
from Blacoh Fluid Control, Inc.
1/2" POLY PRESSURE RELIEF VALVE, EPDM, UNION, MINI [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 0.50
- Connection Description: UNION
from Blacoh Fluid Control, Inc.
1/2" POLY PRESSURE RELIEF VALVE, EPDM, NPT [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 0.50
- Connection Description: Threaded; FNPT
from Blacoh Fluid Control, Inc.
1/2" POLY PRESSURE RELIEF VALVE, EPDM, 150# FLANGE [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 0.50
- Connection Description: FLANGE, US, 150# CLASS
from Blacoh Fluid Control, Inc.
1/2" POLY PRESSURE RELIEF VALVE, EPDM, UNION [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 0.50
- Connection Description: UNION
from Blacoh Fluid Control, Inc.
1/2" POLY PRESSURE RELIEF VALVE 2 PORT, EPDM, 150# FLANGE, MINI [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 0.50
- Connection Description: FLANGE, US, 150# CLASS
from Blacoh Fluid Control, Inc.
1/2" POLY PRESSURE RELIEF VALVE 2 PORT, EPDM, UNION [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 0.50
- Connection Description: UNION
from Blacoh Fluid Control, Inc.
1/2" POLY PRESSURE RELIEF VALVE RIGHT ANGLE 90, EPDM, UNION, MINI [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 0.50
- Connection Description: UNION
from Cole-Parmer
Valves with connections of 1/4" or 1/2" have a diaphragm made of Viton <reg > and withstand a maximum inlet pressure of 210 psig. All other valves have a PTFE shaft design and withstand a maximum inlet pressure of 140 psig. The shaft design prevents emergency shutdown with a three-seal system... [See More]
- Primary Material: PP
from DK-LOK U.S.A.
Up to 6000psig (413bar). Up to 204 ℃ (400 ℉). SS316. Cracking pressure 50 to 6000psing (3.4 to 413bar). DK-LOK OD 1/4 - 1/2 inch. Pipe thread 1/4 - 1/2 inch [See More]
- Primary Material: Stainless Steel; PP; Rubber (optional feature); Vitron (optional EPDM and BUNA N)
- Maximum Pressure: 3000.00
- Valve Size: 0.19
- Controlled Pressure Range: 0.00 to 3000.00
from Qosina Corp.
Qosina is a leading supplier of Relief / Inflation Valve with 9/16 inch Diameter (14 mm), 1.9 - 2.3 psi CP. Get fast shipping and volume discounts on Relief Valves parts. [See More]
- Primary Material: Stainless Steel; PP; Acrylic, Al, PP, Silicone, SS
- Media: Air; Water
- Maximum Pressure: 1.90 to 2.30
from Iwaki America and Walchem, IWAKI America Inc
Walchem diaphragm back pressure valves are used to enhance the performance of chemical feed pumps and systems by providing a constant discharge head pressure. These valves also function as an antisyphon valve. The diaphragm is held against the seat by the internal spring. Back pressure is adjustable... [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 0.50
- Controlled Pressure Range: 0.00 to 150.00
from Western Analytical Products
. Adapt tubing outer diameter (OD) to manifold NPT ports with compression fittings. 1/4 and 1/2 NPT connections. Chemically resistant Polypropylene and Tefzel ®. For secure fluid connections to a manifold, select a fitting based on your tubing outer diameter (OD). Wrap NPT threads 3-4 times and... [See More]
- Primary Material: PP
from Hayward Flow Control
All Thermoplastic diaphragm Pressure Relief Valve for protecting against over-pressure in Chemical Feed Systems. All valves are preset at 50 psi, however they are field adjustable via the adjustment screw. [See More]
- Primary Material: PVC; CPVC; PP; PVDF, Noryl
- Maximum Pressure: 10.00 to 150.00
- Valve Size: 0.25 to 2.00
- Connection Description: Threaded
from KZVALVE
The KZValve QX Series 3-Way, Side Load, Full Port, Ball Valves (On-On Diverter) are engineered for actuation and designed to work with the KZValve actuators. These reliable valves are proven performers season after season. • 3/4", 1" and 11/2" full port valves. • Ball: 316 stainless steel. [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 1.00
- Connection Description: Threaded
from Qosina Corp.
Qosina is a leading supplier of T Pressure Relief Valve with 0.25 inch OD x 0.281 inch OD x 0.25 inch OD, 2.5 psi, +/- 20% Crack Tolerance. Get fast shipping and volume discounts on Relief Valves parts. [See More]
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Media: Air; Water
- Maximum Pressure: 2.50
from Iwaki America and Walchem, IWAKI America Inc
Anti-Syphon Valve. Enables feeding into suction/negative pressure applications or metering fluids “downhill ”. Back Pressure Valve. Provides accurate metering of fluids into low or open discharge pressures. Pressure Relief Valve. Adjustable between 30 psi and 125 psi [See More]
- Primary Material: PP
- Maximum Pressure: 150.00
- Valve Size: 0.50
- Controlled Pressure Range: 30.00 to 125.00
from Western Analytical Products
When using a carboy or Justrite container is not economical or practical, it may be useful to dispose of solvent wastes into a standard laboratory bottle. For vapor control, attach an EF-100 vapor filter with filter adapter to one port when connecting solvent wastes. Most manifolds may also be used... [See More]
- Primary Material: PP
from Hayward Flow Control
All thermoplastic diaphragm Back Pressure Valve for chemical feed systems, applies back pressure to a metering pump to prevent siphoning and eliminates varying dosage rates resulting from fluctuating downstream pressure. All valves are preset for 50 psi, but are field adjustable via the adjustment... [See More]
- Primary Material: PVC; CPVC; PP; PVDF, Noryl
- Maximum Pressure: 10.00 to 150.00
- Valve Size: 0.25 to 2.00
- Connection Description: Threaded
from Qosina Corp.
Qosina is a leading supplier of T Pressure Relief Valve with 0.25 inch OD x 0.281 inch OD x 0.25 inch OD, 8 psi, +/- 25% Crack Tolerance. Get fast shipping and volume discounts on Relief Valves parts. [See More]
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Media: Air; Water
- Maximum Pressure: 8.45
from Western Analytical Products
When using a carboy or Justrite container is not economical or practical, it may be useful to dispose of solvent wastes into a standard laboratory bottle. For vapor control, attach an EF-100 vapor filter with filter adapter to one port when connecting solvent wastes. Most manifolds may also be used... [See More]
- Primary Material: PP
from Qosina Corp.
Qosina is a leading supplier of T Pressure Relief Valve with 0.250 inch OD x 0.281 inch OD x 0.250 inch OD, 30 psi, +/- 10% Crack Tolerance. Get fast shipping and volume discounts on Relief Valves parts. [See More]
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Media: Air; Water
- Maximum Pressure: 30.00
from Western Analytical Products
When using a carboy or Justrite container is not economical or practical, it may be useful to dispose of solvent wastes into a standard laboratory bottle. For vapor control, attach an EF-100 vapor filter with filter adapter to one port when connecting solvent wastes. Most manifolds may also be used... [See More]
- Primary Material: PP
from Qosina Corp.
Order T pressure relief valves at Qosina and get only what you need with our low $25-order minimum. Features a 9-12 psi tolerance. [See More]
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Media: Air; Water
- Maximum Pressure: 9.00 to 12.00
from Western Analytical Products
When using a carboy or Justrite container is not economical or practical, it may be useful to dispose of solvent wastes into a standard laboratory bottle. For vapor control, attach an EF-100 vapor filter with filter adapter to one port when connecting solvent wastes. Most manifolds may also be used... [See More]
- Primary Material: PP
from Qosina Corp.
Get automatic relief when pressures rise too high by ordering and installing an 80194 T pressure relief valve from Qosina. The valve has an 18-psi tolerance. [See More]
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Media: Air; Water
- Maximum Pressure: 18.00
from Qosina Corp.
T Pressure Relief Valve [See More]
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Media: Air; Water
- Maximum Pressure: 15.00
from Qosina Corp.
T Pressure Relief Valve [See More]
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Media: Air; Water
- Maximum Pressure: 58.00
from Qosina Corp.
Make sure pressures don ’t get too high by ordering an 80 PSI 80197 T Pressure Relief Valve from Qosina. The durable valve fits 0.25-inch OD tubing. [See More]
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Media: Air; Water
- Maximum Pressure: 80.00
from Qosina Corp.
Qosina is a leading supplier of Pressure Relief T Valve with 2.5 psi +/- 15% Crack Tolerance. Get fast shipping and volume discounts on Relief Valves parts. [See More]
- Primary Material: Stainless Steel; PP; PP, SS
- Media: Air; Water
- Maximum Pressure: 2.50