{"id":3843,"date":"2025-10-17T09:15:10","date_gmt":"2025-10-17T01:15:10","guid":{"rendered":"https:\/\/ballvalves.tw\/?post_type=product&p=3843"},"modified":"2026-07-16T09:24:09","modified_gmt":"2026-07-16T01:24:09","slug":"clapet-anti-retour-silencieux","status":"publish","type":"product","link":"https:\/\/ballvalves.tw\/fr\/product\/silent-check-valve\/","title":{"rendered":"Clapet anti-retour silencieux monobloc 304"},"content":{"rendered":"
\nPDF<\/span>1 clapet anti-retour<\/span>\u00c0 ressort \u00b7 Fiche technique<\/span>T\u00e9l\u00e9charger \u2193<\/span><\/a>\n<\/div>\n

Description du produit<\/h2>\n

The SC-1 is a one-piece silent check valve \u2014 also sold as a spring check valve or inline check valve. A stainless spring pushes the piston closed avant<\/i> 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.<\/p>\n

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\u2033 to 2\u2033; NPT and PF can be made to order. Prefer a hinged-disc valve with lower pressure drop? See the stainless steel swing check valve<\/a>, ou parcourir tous les stainless steel check valves<\/a>.<\/p>\n

Silent (Spring) or Swing \u2014 Which Check Valve?<\/h2>\n\n\n\n\n\n\n\n
<\/th>\nSilent \/ spring check (this valve)<\/th>\nSwing check<\/th>\n<\/tr>\n<\/thead>\n
Closing action<\/b><\/td>\nA spring closes the piston before flow fully reverses (non-slam)<\/td>\nGravity and reverse flow swing the hinged disc shut<\/td>\n<\/tr>\n
Pressure drop<\/b><\/td>\nHigher \u2014 the spring sits in the flow path<\/td>\nLow \u2014 the disc swings clear of the bore<\/td>\n<\/tr>\n
Id\u00e9al pour<\/b><\/td>\nPump discharge and lines prone to water hammer<\/td>\nGeneral water, oil and gas lines where low pressure drop matters<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Caract\u00e9ristiques techniques principales<\/h2>\n\n\n\n\n\n\n\n\n\n
Type<\/b><\/td>\nSilent check valve \u2014 one-piece, spring loaded (inline \/ spring check valve)<\/td>\n<\/tr>\n
Mod\u00e8le<\/b><\/td>\nSC-1<\/td>\n<\/tr>\n
Gamme de tailles<\/b><\/td>\n1\/2\u2033 \u2013 2\u2033<\/td>\n<\/tr>\n
Body, piston & cap<\/b><\/td>\nCF8 \u2014 the cast form of 304 stainless steel \u2014 in stock; CF8M (cast 316) made to order<\/td>\n<\/tr>\n
Spring<\/b><\/td>\nSS304 (SS316 on the 316 version)<\/td>\n<\/tr>\n
Fin de la connexion<\/b><\/td>\nFemale PT thread \u2014 in stock; NPT and PF made to order<\/td>\n<\/tr>\n
Construction<\/b><\/td>\nOne-piece body, compact face-to-face<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mat\u00e9riaux<\/h2>\n

Four parts, matching the numbered circles \u2460\u2013\u2463 in the drawing below. Materials shown for the 304 version in stock; the made-to-order 316 version uses CF8M castings and an SS316 spring.<\/p>\n\n\n\n\n\n\n\n\n
Non.<\/th>\nPartie<\/th>\nMat\u00e9riau<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nCorps<\/b><\/td>\nCF8 (CF8M to order)<\/td>\n<\/tr>\n
2<\/td>\nPiston<\/b><\/td>\nCF8 (CF8M to order)<\/td>\n<\/tr>\n
3<\/td>\nSpring<\/b><\/td>\nSS304 (SS316 to order)<\/td>\n<\/tr>\n
4<\/td>\nCasquette<\/b><\/td>\nCF8 (CF8M to order)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Dimensions (mm)<\/h2>\n
\n\"One-piece
B, C and D in the drawing match the columns below; A is the threaded bore. Numbers \u2460\u2013\u2463 are the parts in the materials table above. Unit: mm.<\/figcaption><\/figure>\n

Female PT threads in stock; NPT and PF made to order. Full drawing in the 1PC Check Valve dimension sheet (PDF)<\/a>.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Taille<\/th>\nB<\/th>\nC<\/th>\nD<\/th>\n<\/tr>\n<\/thead>\n
1\/2\u2033<\/b><\/td>\n\u00d825<\/td>\n56<\/td>\n\u00d827<\/td>\n<\/tr>\n
3\/4\u2033<\/b><\/td>\n\u00d831.9<\/td>\n62.4<\/td>\n\u00d833.9<\/td>\n<\/tr>\n
1\u2033<\/b><\/td>\n\u00d838<\/td>\n71.5<\/td>\n\u00d839.2<\/td>\n<\/tr>\n
1-1\/4\u2033<\/b><\/td>\n\u00d848.5<\/td>\n80<\/td>\n\u00d850.5<\/td>\n<\/tr>\n
1-1\/2\u2033<\/b><\/td>\n\u00d855<\/td>\n92<\/td>\n\u00d857.5<\/td>\n<\/tr>\n
2\u2033<\/b><\/td>\n\u00d867<\/td>\n102<\/td>\n\u00d870<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Domaines d'application et emplacements<\/h2>\n