Stainless Steel Silent Check Valve – Spring Loaded, Non-Slam, 304, 1/2″–2″

وصف المنتج

The SC-1 is a one-piece silent check valve — also sold as a spring check valve or inline check valve. A stainless spring pushes the piston closed قبل flow fully reverses, so the valve shuts quietly instead of slamming: no water hammer, no shock load on pumps and pipes. The one-piece body is compact enough for tight spaces around pumps and manifolds.

The body, piston and cap are cast 304 stainless steel (CF8), with a CF8M (cast 316) version made to order. Female PT threads are in stock, sizes 1/2″ to 2″; NPT and PF can be made to order. Prefer a hinged-disc valve with lower pressure drop? See the stainless steel swing check valve, ، أو تصفح الكل صمامات فحص من الفولاذ المقاوم للصدأ.

Silent (Spring) or Swing — Which Check Valve?

المواصفات الفنية الرئيسية

التطبيقات

• Pump discharge lines — the spring closes the valve before reverse flow builds, so there is no water hammer when the pump trips.
• Municipal water supply and booster pump stations — quiet, fast-closing check duty on clean water.
• HVAC and high-rise booster systems — silent closing in mechanical rooms next to occupied space.
• Cooling-water loops — clean water only; not for media with suspended solids.
• Pump skids and tight manifolds — the short one-piece body fits where a swing check will not.
• Vertical and any-orientation piping — the spring closes the valve, so gravity is not needed.
• Small-bore, low-pressure water distribution lines — 1/2″–2″ threaded connections.
• Water treatment plants — clean-water lines and pump discharge, not sludge.

Where slam noise is not a concern and the line is horizontal, the stainless steel swing check valve is the lower-cost option; for 2″–4″ flanged lines, see the stainless steel flanged check valve.

الأسئلة الشائعة

Why is it called a silent check valve? Because it closes quietly. The spring pushes the piston shut before flow fully reverses, so there is no rush of backflow to slam the valve — the bang known as water hammer never happens.

Is this the same as a spring check valve or inline check valve? Yes — silent check valve, spring check valve and inline check valve are different names for the same design: a spring-loaded piston inside a straight one-piece body.

Silent or swing check — which one do I need? Choose this silent type for pump discharge and lines prone to water hammer. Choose the swing check valve where low pressure drop matters more — its disc swings fully clear of the bore.

ما هي المادة المصنوع منها؟ Body, piston and cap are cast 304 stainless steel (CF8) with a SS304 spring — in stock. A 316 version (CF8M castings, SS316 spring) is made to order.

ما هي معايير الخيوط المتوفرة؟ Female PT threads are in stock, sizes 1/2″–2″. NPT and PF can be made to order — tell us which standard your piping uses when you request a quote.

ما هو الحد الأدنى للطلب؟ لا يوجد حد أدنى لكمية الطلب — نحن نقبل الطلبات من أي حجم، بما في ذلك الطلبات التجريبية الصغيرة. بالنسبة للطلبات الصغيرة، يتولى المشتري ترتيب الشحن ودفع تكاليفه. يتم الدفع عن طريق التحويل المصرفي (T/T) — 30% عند تأكيد الطلب، و70% قبل الشحن.