SMC Viper Valve: 3/8 in, Air to Spring, Fail Closed, PFA, 1/8 in NPT
The SMC Viper Valve is a high-purity pneumatically-actuated diaphragm valve with a 3/8 in size. It features air-to-spring actuator operation and a fail-closed position, with a PFA body and 1/8 in NPT ports. The valve…
SKU 3G-OTH-449931
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Product Description
The SMC Viper Valve is a high-purity pneumatically-actuated diaphragm valve with a 3/8 in size. It features air-to-spring actuator operation and a fail-closed position, with a PFA body and 1/8 in NPT ports. The valve has a 1.9 Coefficient of Volume and is identified by manufacturer part number LVQ400-Z11N.
Frequently Asked Questions
What is the SMC Viper Valve used for?
The SMC Viper Valve is a high-purity pneumatically-actuated diaphragm valve used in semiconductor, pharmaceutical, and chemical processing applications. Its PFA body and air-to-spring fail-closed design ensure reliable shutoff in corrosive or ultrapure fluid systems.
What are the specifications of the SMC Viper Valve LVQ400-Z11N?
The SMC Viper Valve LVQ400-Z11N has a 3/8 in size, PFA body, 1/8 in NPT ports, air-to-spring actuator operation, fail-closed position, and a 1.9 Coefficient of Volume. It is a high-purity pneumatically-actuated diaphragm valve from SMC.
Where to buy the SMC Viper Valve worldwide?
3G Electric supplies the SMC Viper Valve LVQ400-Z11N worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.
How to install the SMC Viper Valve?
Install the SMC Viper Valve by connecting the 1/8 in NPT ports to your piping, applying the correct air pressure to the air-to-spring actuator, and verifying the fail-closed position. Follow SMC's generic diaphragm valve installation guidelines for torque and alignment.
Used in
Common applications for SMCSMC Products
3G Electric supplies SMC high-purity pneumatically-actuated diaphragm valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.













